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标题: 出个中兴试题考考大家  [查看完整版帖子] [打印本页]
时间:  2007-4-13 15:43
作者: fluster     标题: 出个中兴试题考考大家

<p class="MsoNormal" style="MARGIN: 6pt 0cm 0pt 18pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 20pt; tab-stops: list 18.0pt; mso-outline-level: 1; mso-list: l5 level1 lfo13;"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><p></p></span></p><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">一、</span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">填空题（共<span lang="EN-US">60</span>空，每题<span lang="EN-US">0.5</span>分）。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">1、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">连接已正常工作的两网元的光纤全部断纤后，两网元上报的最高级别的告警是<span lang="EN-US">LOS<u><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></u></span>，该告警由<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>SPI<span style="mso-spacerun: yes;">&nbsp; </span></span>　</u>功能模块检测。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">2、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">在<span lang="EN-US">SDH</span>传送网中，任何类型的通过光纤直接相连的两个网元之间构成复用<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>段，接收设备可处理再生段<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="mso-spacerun: yes;">&nbsp;</span></span></u>开销<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">3、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><u><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;</span>B3</span></u><span style="COLOR: black; FONT-FAMILY: 宋体;">字节的作用是检测高阶通道误码；<span lang="EN-US">V5<u><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></u></span>字节的第<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>1</span>，<span lang="EN-US">2<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span></span></u>比特的作用是检测底阶通道误码。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">4、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">在复用段某网元检出<span lang="EN-US">B2</span>性能后，通过<u><span lang="EN-US"> M1<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>字节向复用段远端传送<span lang="EN-US">MS-REI</span>性能告警。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">5、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">通过命令对某网元的一个光板的光方向进行软环回，环回的开口方向指向交叉板，该环回属于<u> 终端侧<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span></span></u>环回。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">6、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">在<span lang="EN-US">II</span>型机网元中，<span lang="EN-US">TU-12</span>指针丢失不仅可以从支路板上检测到，也可能从<u> 交叉<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span></span></u>板检测到。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">7、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">在<span lang="EN-US">STM-1</span>的帧结构中，<span lang="EN-US">AU PTR</span>共有<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>9<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>个字节。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">8、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">V2</span><span style="COLOR: black; FONT-FAMILY: 宋体;">设备的电源板有两种类型，其中<span lang="EN-US">WB</span>的输入直流电压为<u><span lang="EN-US"> +24</span></u>伏。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 36.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">9、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp; </span></font></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">V2</span><span style="COLOR: black; FONT-FAMILY: 宋体;">设备的机框共有<span lang="EN-US">15</span>个槽位，当<span lang="EN-US">6</span>、<span lang="EN-US">7</span>槽位插入<span lang="EN-US">OIB1D</span>板时（双路<span lang="EN-US">STM-1</span>接口板），第<span lang="EN-US">6</span>第<span lang="EN-US">7</span>这两块板的四个光方向的编号分别是<u><span lang="EN-US"> 3412<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">10、<span style="FONT: 7pt &quot;Times New Roman&quot;;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></font></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">E100</span><span style="COLOR: black; FONT-FAMILY: 宋体;">网管软件系统主要分为三层，它们是<u><span lang="EN-US">GUI<span style="mso-spacerun: yes;">&nbsp; </span></span></u>、<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>MANAGE-DB</span></u>、和<u><span lang="EN-US"> AGENT<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><p></p></span></u></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">11</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在<span lang="EN-US">32 </span>波的<span lang="EN-US">DWDM</span>系统中，相邻两波的波长间隔是<u>
                                <span lang="EN-US">0</span>。<span lang="EN-US">8<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>纳米，<u>
                                <span lang="EN-US">100<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u><span lang="EN-US">GHz</span>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">12</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">OSC</span>板的接收灵敏度是<span lang="EN-US">-48<u><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></u>dBm</span>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; LINE-HEIGHT: 17pt; mso-line-height-rule: exactly;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">13</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">DWDM</span>设备类型有<u><span lang="EN-US">OTM </span></u>、<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>OADM<span style="mso-spacerun: yes;">&nbsp; </span></span></u>、<u><span lang="EN-US"> OLA<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">14</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、根据<span lang="EN-US">ITU-T</span>对<span lang="EN-US">SDH</span>时钟系统的相关建议，网元可以从外时钟源和光线路提取多路参考时钟参考信号。最多可提取<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>4<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>路外部时钟参考源。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">15</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、指针调整是<span lang="EN-US">SDH</span>的关键技术。在<span lang="EN-US">SDH</span>网络中，如果某些网元的频率偏移较大将导致指针的连续调整。在这种情况下，前次指针调整后必需间隔<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span>3<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span></span></u>帧，才能进行第二次指针调整。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">16</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、对于管理单元指针<span lang="EN-US">AU-PTR</span>，其负调整机会是<u><span lang="EN-US"> H3<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>这三个字节。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">17</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、通过<span lang="EN-US">SDH</span>设备进行组网，常常会遇到不同厂家设备的互联互通问题。为了能在不同厂家设备之间进行高阶通道的串连监视，在高阶通道开销中安排了<u><span lang="EN-US"> N1<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>字节。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">18</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、根据<span lang="EN-US">ITU-T</span>对<span lang="EN-US">SDH</span>时钟系统的<span lang="EN-US">G.813</span>建议，<span lang="EN-US">SETS</span>（同步设备定时源）的输出频率偏差应不大于<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>4</span>。<span lang="EN-US">6PPM<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>。<sup><span lang="EN-US"><p></p></span></sup></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">19</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、如果用<span lang="EN-US">V2</span>设备组成一个<span lang="EN-US">SDH</span>网络，在该网络中，如果进行正常的点对点公务联络，网络中一次只能有<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span>2<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>对人能够通话。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">20</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在网管系统的性能管理中，有<span lang="EN-US">15</span>分钟和<span lang="EN-US">24</span>小时性能管理。对于<span lang="EN-US">15</span>分钟性能管理，网管系统设置的默认高低门限是<u><span lang="EN-US"> 900<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>到<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>100<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">21</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">II</span>型机的最大空分交叉能力为<u><span lang="EN-US">80X80<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>条<span lang="EN-US">VC-4</span>总线。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">22</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、对<span lang="EN-US">II</span>型机网元，所有支路板和光线路板的业务信息流都是通过背板连接到交叉板的。每条背板业务总线速率是<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span>77<span style="mso-spacerun: yes;">&nbsp;&nbsp; </span></span></u><span lang="EN-US">Mbit/s</span>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">23</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、用于<span lang="EN-US">2500E</span>设备的交叉板<span lang="EN-US">CSA</span>和用于<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="10" unitname="g"><span lang="EN-US">10G</span></chmetcnv>设备的交叉板<span lang="EN-US">CSB</span>、<span lang="EN-US">CSD</span>的空分交叉能力分别是<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>96X96<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>条<span lang="EN-US">VC-4</span>总线、<u><span lang="EN-US"> 256X256<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>条<span lang="EN-US">VC-4</span>总线和<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span>512X512<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>条<span lang="EN-US">VC-4</span>总线。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">24</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在二纤或四纤复用段保护环中，<span lang="EN-US"> ADM</span>网元个数最多只能是<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>16<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span></span></u>个。 这是由<span lang="EN-US">K1<u><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span></u></span>字<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span><u><span style="mso-spacerun: yes;">&nbsp;</span>K1<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></u></span>节决定的。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">25</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">NCP</span>板对网元上的所有单板实施管理，所传递的管理信息是通过<u><span lang="EN-US"> S</span>口<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span></span></u>通信接口向各单板发送的。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">26</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在<span lang="EN-US">E100</span>网管中进行业务时隙配置。在配置界面中，光板和支路板的收发业务形成树形结构分列在界面的左右两边。其中，左边光板为<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span></span>发送<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span></span></u>业务端，左边支路板为<u> 接入<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span></span></u>业务端。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">27</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在进行各网元的光连接配置时，根据不同的网元，可以选择单向或双向光连接。对于<u><span lang="EN-US"> TM<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>网元，则只能选择单向光连接。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">28</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、对于<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="10" unitname="g"><span lang="EN-US">10G</span></chmetcnv>设备而言，当时用<span lang="EN-US">CSB</span>交叉板时，有两个板位不能插任何速率的业务接口板，这两个板位是<u><span lang="EN-US"> 12</span>，<span lang="EN-US">15<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>板位。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">29</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、有一种网络保护方式可以完成两个不同类型的<span lang="EN-US">SDH</span>网络间的业务保护，这种保护方式被称为<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>SNI<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">30</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、对于四纤复用段保护链来说，有<span lang="EN-US">1+1</span>、<span lang="EN-US">1</span>：<span lang="EN-US">1</span>、<span lang="EN-US">1</span>：Ｎ三种组网形式形式。其中Ｎ的最大值是<u>　<span lang="EN-US">14</span>　　</u>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">31</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、为了完成告警、性能信息的采集、过滤并上报ＮＣＰ，同时接收来自ＮＣＰ的控制命令。网元上的所有单板上均有一个负责与ＮＣＰ通信的<span lang="EN-US">MCU</span><u>　　　　</u>模块。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">32</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、从<span lang="EN-US">II</span>型机<span lang="EN-US">WCK</span>板上的时钟模块输出的时钟定时信号中有系统帧频。系统帧频的频率是<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span>8K<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u><span lang="EN-US">Hz</span>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">32</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在<span lang="EN-US">STM</span>—<span lang="EN-US">N</span>帧结构中，信息速率是按<span lang="EN-US">4</span>倍递增的。再生段和复用段开销字节中有四个字节也是按<span lang="EN-US">4</span>倍递增的，它们是<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>、<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>、<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>、<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">33</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">V2</span>（<span lang="EN-US">600</span>）设备除了有<span lang="EN-US">4</span>个<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="155" unitname="m"><span lang="EN-US">155M</span></chmetcnv>光方向外，还有<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>2<span style="mso-spacerun: yes;">&nbsp;&nbsp; </span></span></u>个<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="622" unitname="m"><span lang="EN-US">622M</span></chmetcnv>光方向。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">34</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="10" unitname="g"><span lang="EN-US">10G</span></chmetcnv>设备在业界首创了复用段逻辑保护功能。它除了常用的共享保护和额外业务保护方式外，还有<u> 逻辑子网<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>保护方式。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">35</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">SDH</span>光接口按光纤距离、光板速率和使用波长分别以不同的代码表示。<span lang="EN-US">L</span>—<span lang="EN-US">16.2</span>就是某种光接口代码，其中<span lang="EN-US">L</span>表示<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>C</span>长距离<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span></span></u>、<span lang="EN-US">16</span>表示<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>2</span>。<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="5" unitname="g"><span lang="EN-US">5G</span></chmetcnv><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span></span></u>、<span lang="EN-US">2</span>表示<u> 波长为<span lang="EN-US">1550</span></u><span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">36</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在低阶通道开销字节中，<span lang="EN-US">V5</span>字节的第<span lang="EN-US">1</span>和第<span lang="EN-US">2</span>比特通过偶校验运算检测<u> 低界<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>通道误码。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">37</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="10" unitname="g"><span lang="EN-US">10G</span></chmetcnv>设备最多有<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span>4<span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>个<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="10" unitname="g"><span lang="EN-US">10G</span></chmetcnv>的光方向。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">38</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在各类<span lang="EN-US">SDH</span>保护网络中，<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="155" unitname="m"><span lang="EN-US">155M</span></chmetcnv>速率光板不能用于<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span></span>复用<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>段保护。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">39</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在网管上，可以通过<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp; </span></span>屏蔽告警<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>命令使正在上报的告警消失。<span lang="EN-US"><p></p></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">40</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在信号的复用映射过程中从<span lang="EN-US">C-12</span>到<span lang="EN-US">VC-4</span>由<u> 电支路<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>板完成；从<span lang="EN-US">VC-4</span>到<span lang="EN-US">STM-N</span>由<u> 光支路<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>板完成。<span lang="EN-US"><p></p></span></span></p>
时间:  2007-4-13 15:46
作者: fluster

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; TEXT-INDENT: -21pt; tab-stops: list 21.0pt; mso-list: l9 level1 lfo1;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">二、</span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">选择题（共<span lang="EN-US">30</span>题，每题<span lang="EN-US">1</span>分）<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: 宋体;"><span style="mso-list: Ignore;"><font face="Times New Roman">1、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></font></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">V2</span><span style="COLOR: black; FONT-FAMILY: 宋体;">设备子架共有<span lang="EN-US">15</span>个板位，<span lang="EN-US">10</span>—<span lang="EN-US">14</span>板位可插各种速率的电支路板。而<span lang="EN-US">14</span>板位插入的电支路板可以：<span lang="EN-US"> A<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 41.3pt; TEXT-INDENT: 0.7pt; tab-stops: list 45.0pt; mso-list: l9 level3 lfo1;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp;&nbsp;&nbsp; </span></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">正常上下业务；<span lang="EN-US">B</span>、只能插入<chmetcnv unitname="m" sourcevalue="140" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">140M</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>速率支路板；<span lang="EN-US">C</span>、支路板保护；<span lang="EN-US">D</span>、只能插入<chmetcnv unitname="m" sourcevalue="1.5" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">1.5M</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>速率支路板。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; tab-stops: 18.0pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>2</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">II</span>型机的两块交叉板的工作方式是：<span lang="EN-US"> A<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 60.75pt; TEXT-INDENT: -18pt; tab-stops: list 60.75pt; mso-list: l10 level1 lfo2;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">热备份；<span lang="EN-US">B</span>、并行；<span lang="EN-US">C</span>、负荷分担；<span lang="EN-US">D</span>、冷备分。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">3</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">DWDM</span>网络目前能否实现光复用段保护：<span lang="EN-US"> C<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、能实现；<span lang="EN-US">B</span>、需安装<span lang="EN-US">OADM</span>板才能实现；<span lang="EN-US">C</span>、不能实现；<span lang="EN-US">D</span>、需安装<span lang="EN-US">OP</span>板才能实现。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 40.4pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 1.85gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">4</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">AU-PTR</span>是<span lang="EN-US">STM-1</span>的管理单元指针，共<span lang="EN-US">9</span>个字节，分别是：<span lang="EN-US">H1YYH21*1*H3H3H3</span>。其中表示指针的字节是：<span lang="EN-US"> A<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 42pt; mso-char-indent-count: 4.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">H1H2</span>；<span lang="EN-US">B</span>、<span lang="EN-US">H1YY</span>；<span lang="EN-US">C</span>、<span lang="EN-US">H21*1*</span>；<span lang="EN-US">D</span>、<span lang="EN-US">H1H2H3</span>。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 40.4pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 1.85gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">5</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<chmetcnv unitname="g" sourcevalue="10" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">10G</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>设备可以组成两个<chmetcnv unitname="g" sourcevalue="10" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">10G</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>的二纤双向复用段共享保护环。各复用段共享保护环的两个光方向的光板排列要求是：<span lang="EN-US">A <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 61.5pt; TEXT-INDENT: -18pt; tab-stops: list 61.5pt; mso-list: l12 level1 lfo3;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">以交叉板为轴线左右对称；<span lang="EN-US">B</span>、以交叉板为轴线上下对称；<span lang="EN-US">C</span>、以交叉板为中心斜线对称；<span lang="EN-US">D</span>、无板位排列要求。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">6</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">II</span>型机设备可以从多个光方向抽取线路时钟，最多可抽取：<span lang="EN-US"> D<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 61.5pt; TEXT-INDENT: -18pt; tab-stops: list 61.5pt; mso-list: l11 level1 lfo4;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">2</span><span style="COLOR: black; FONT-FAMILY: 宋体;">路；<span lang="EN-US">B</span>、<span lang="EN-US">8</span>路；<span lang="EN-US">C</span>、<span lang="EN-US">4</span>路；<span lang="EN-US">D</span>、<span lang="EN-US">6</span>路。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">7</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、下列板位是<span lang="EN-US">II</span>型机的一个子架，那个板位不能抽取线路时钟信号：<span lang="EN-US"> D<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 61.5pt; TEXT-INDENT: -18pt; tab-stops: list 61.5pt; mso-list: l6 level1 lfo5;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">07</span><span style="COLOR: black; FONT-FAMILY: 宋体;">号板位；<span lang="EN-US">B</span>、<span lang="EN-US">05</span>号板位；<span lang="EN-US">C</span>、<span lang="EN-US">30</span>号板位；<span lang="EN-US">D</span>、<span lang="EN-US">04</span>号板位。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">8</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、下列板位是<span lang="EN-US">II</span>型机的一个子架，那个板位插入光板后没有复用段保护功能：<span lang="EN-US">D<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 61.5pt; TEXT-INDENT: -18pt; tab-stops: list 61.5pt; mso-list: l0 level1 lfo6;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">27</span><span style="COLOR: black; FONT-FAMILY: 宋体;">号板位；<span lang="EN-US">B</span>、<span lang="EN-US">34</span>号板位；<span lang="EN-US">C</span>、<span lang="EN-US">10</span>号板位；<span lang="EN-US">D</span>、<span lang="EN-US">11</span>号板位。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>9</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、当<span lang="EN-US">II</span>型机子架上<span lang="EN-US">03</span>、<span lang="EN-US">23</span>、<span lang="EN-US">14</span>、<span lang="EN-US">34</span>这四个板位安装了<chmetcnv unitname="m" sourcevalue="622" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">622M</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>速率的光板后，<span lang="EN-US">02</span>、<span lang="EN-US">22</span>、<span lang="EN-US">15</span>、<span lang="EN-US">35</span>这四个板位便不能安装任何业务单板，这是因为：<span lang="EN-US">A<p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">03</span>、<span lang="EN-US">23</span>、<span lang="EN-US">14</span>、<span lang="EN-US">34</span>这四个板位占用了<span lang="EN-US">02</span>、<span lang="EN-US">22</span>、<span lang="EN-US">15</span>、<span lang="EN-US">35</span>这四个板位的业务总线；<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; mso-para-margin-left: 4.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">B</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">03</span>、<span lang="EN-US">23</span>、<span lang="EN-US">14</span>、<span lang="EN-US">34</span>这四个板位占用了<span lang="EN-US">02</span>、<span lang="EN-US">22</span>、<span lang="EN-US">15</span>、<span lang="EN-US">35</span>这四个板位的开销总线；<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>C</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">03</span>、<span lang="EN-US">23</span>、<span lang="EN-US">14</span>、<span lang="EN-US">34</span>这四个板位占用了<span lang="EN-US">02</span>、<span lang="EN-US">22</span>、<span lang="EN-US">15</span>、<span lang="EN-US">35</span>这四个板位的控制总线；<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>D</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">03</span>、<span lang="EN-US">23</span>、<span lang="EN-US">14</span>、<span lang="EN-US">34</span>这四个板位占用了<span lang="EN-US">02</span>、<span lang="EN-US">22</span>、<span lang="EN-US">15</span>、<span lang="EN-US">35</span>这四个板位的管理总线。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: left; mso-line-height-rule: exactly;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>10</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、由<span lang="EN-US">6</span>个网元组成<chmetcnv unitname="g" sourcevalue="2.5" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">2.5G</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>的二纤双向复用段环，它的最大业务量为：<span lang="EN-US">C <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 65.25pt; TEXT-INDENT: -18pt; tab-stops: list 65.25pt; mso-list: l1 level1 lfo7;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">6AU-4</span><span style="COLOR: black; FONT-FAMILY: 宋体;">；<span lang="EN-US">B</span>、<span lang="EN-US">24AU-4</span>；<span lang="EN-US">C</span>、<span lang="EN-US">48AU-4</span>；<span lang="EN-US">D</span>、<span lang="EN-US">96AU-4</span>。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">&nbsp;</span></p><p></p><p>&nbsp;</p><p></p><p>&nbsp;</p><p></p>
时间:  2007-4-13 15:47
作者: fluster

&nbsp;11<span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">SDH</span>光纤通讯采用的线路传输码型是：<span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp; </span>B <p></p></span></span><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 65.25pt; TEXT-INDENT: -18pt; tab-stops: list 65.25pt; mso-list: l3 level1 lfo8;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">HDB3</span><span style="COLOR: black; FONT-FAMILY: 宋体;">；<span lang="EN-US"> B</span>、<span lang="EN-US">NRZ</span>；<span lang="EN-US"> C</span>、<span lang="EN-US">AMI</span>；<span lang="EN-US"> D</span>、<span lang="EN-US">CMI</span>。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">12</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、四纤双向复用段保护环与二纤双向复用段共享保护环相比，其特点是：<span lang="EN-US">A <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 45pt; TEXT-INDENT: 2.25pt; tab-stops: list 45.0pt; mso-list: l2 level1 lfo9;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">业务量加倍；<span lang="EN-US">B</span>、复用段内网元数量可以大于<span lang="EN-US">16</span>个；<span lang="EN-US">C</span>、抗多点失效；<span lang="EN-US">D</span>、保护倒换时间快。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 44.95pt; TEXT-INDENT: -52.4pt; mso-char-indent-count: -4.99; mso-para-margin-left: -.71gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>13</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">OHP</span>板共处理来自<span lang="EN-US">15</span>个方向的开销总线，每条开销总线由<span lang="EN-US">STM-1</span>段开销中的<span lang="EN-US">32</span>个字节组成。下面哪个字节不属于开销总线中的字节：<span lang="EN-US"> C <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 63.05pt; TEXT-INDENT: -18pt; tab-stops: list 63.05pt; mso-list: l8 level1 lfo10;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">F1</span><span style="COLOR: black; FONT-FAMILY: 宋体;">；<span lang="EN-US">B</span>、<span lang="EN-US">E1</span>；<span lang="EN-US">C</span>、<span lang="EN-US">M1</span>；<span lang="EN-US">D</span>、<span lang="EN-US">E2</span>。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 10.5pt; TEXT-INDENT: -10.5pt; mso-char-indent-count: -1.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span>14</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、用<span lang="EN-US">V2</span>设备组成一个环网，当该网正常联网且<span lang="EN-US">SMCC</span>也能正常取到各网元的时间，<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 52.5pt; TEXT-INDENT: -52.5pt; mso-char-indent-count: -5.0;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">但某些网元未配置任何业务，此时<span lang="EN-US">SMCC</span>应收到从未配业务网元上报的下列告警<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 52.5pt; TEXT-INDENT: -31.5pt; mso-char-indent-count: -3.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">信息中一个告警：<span lang="EN-US">D <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 65.25pt; TEXT-INDENT: -18pt; tab-stops: list 65.25pt; mso-list: l4 level1 lfo11;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">TU-12</span><span style="COLOR: black; FONT-FAMILY: 宋体;">信号丢失；<span lang="EN-US">B</span>、<span lang="EN-US">VC-4</span>复帧丢失；<span lang="EN-US">C</span>、<span lang="EN-US">VC-4</span>净荷失配；<span lang="EN-US">D</span>、<span lang="EN-US">VC-4</span>信号标记失配。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 36.75pt; TEXT-INDENT: -10.5pt; mso-char-indent-count: -1.0; mso-para-margin-left: 2.5gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">15</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在<span lang="EN-US">SDH</span>系统中，有些告警分属于不同的段层，下列哪个告警是属于复用段的告警：<span lang="EN-US">D <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 65.25pt; TEXT-INDENT: -18pt; tab-stops: list 65.25pt; mso-list: l7 level1 lfo12;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">A、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">RS-L0S</span><span style="COLOR: black; FONT-FAMILY: 宋体;">；<span lang="EN-US">B</span>、<span lang="EN-US">RS-OFS</span>；<span lang="EN-US">C</span>、<span lang="EN-US">AU-4PJE</span>；<span lang="EN-US">D</span>、<span lang="EN-US">MS-RDI</span>。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">16</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在<span lang="EN-US">SDH</span>系统中，当光板上报光信号丢失告警时，可能出现了下列那几种情况：<span lang="EN-US">AC <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、输入无光；<span lang="EN-US">B</span>、搜索不到<span lang="EN-US">A<chmetcnv unitname="a" sourcevalue="1" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>1A<chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>2</span>字节；<span lang="EN-US">C</span>、光功率太低；<span lang="EN-US">D</span>、检测到<span lang="EN-US">NDF</span>标记。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">17</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">SDH</span>网元时钟定时方式有多种，在下列方式中有几种属于<span lang="EN-US">SDH</span>网元时钟定时方式：<span lang="EN-US">AB <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">GPS</span>定时；<span lang="EN-US">B</span>、线路定时；<span lang="EN-US">C</span>、通过定时；<span lang="EN-US">D</span>、环路定时。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">18</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、由于各厂商在<span lang="EN-US">AU-PTR</span>的<span lang="EN-US">Y</span>字节中的<span lang="EN-US">SS</span>比特采用不同的编码，从而导致不同商家的<span lang="EN-US">SDH</span>网络不能正常互连互通。下列编码中，那几个属于<span lang="EN-US">Y</span>字节的正确编码。<span lang="EN-US">B <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 60pt; TEXT-INDENT: -18pt; tab-stops: list 60.0pt; mso-list: l9 level3 lfo1;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体;"><span style="mso-list: Ignore;">B、<span style="FONT: 7pt 'Times New Roman';">&nbsp; </span></span></span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">93</span><span style="COLOR: black; FONT-FAMILY: 宋体;">；<span lang="EN-US">B</span>、<span lang="EN-US">FF</span>；<span lang="EN-US">C</span>、<chmetcnv unitname="F" sourcevalue="9" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">9F</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>；<span lang="EN-US">D</span>、<span lang="EN-US">F9</span>。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: red; FONT-FAMILY: 宋体;">19</span><span style="COLOR: red; FONT-FAMILY: 宋体;">、<span lang="EN-US">SDH</span>设备可配置成<span lang="EN-US">TM</span>网元，它的特点是：<span lang="EN-US"> AB <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt;"><span lang="EN-US" style="COLOR: red; FONT-FAMILY: 宋体;">A</span><span style="COLOR: red; FONT-FAMILY: 宋体;">、所有光方向到<span lang="EN-US">TM</span>的业务必须落地；<span lang="EN-US">B</span>、只能有一个光方向</span><span style="COLOR: black; FONT-FAMILY: 宋体;">；<span lang="EN-US">C</span>、不同光方向的业务不能通过光板直接穿通；<span lang="EN-US">D</span>、光板的最高速率必须低于<chmetcnv unitname="m" sourcevalue="622" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">622M</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">20</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">SDH</span>与<span lang="EN-US">DH</span>相比有许多优点，它们是：<span lang="EN-US"> ABCD <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、强大的网管功能；<span lang="EN-US">B</span>、上下业务方便；<span lang="EN-US">C</span>、强大的网络自愈能力；<span lang="EN-US">D</span>、标准的光接口。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">21</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、逻辑子网保护功能有多种保护方式，它们是：<span lang="EN-US">BC <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、共享保护方式；<span lang="EN-US">B</span>、二纤双向复用段保护方式；<span lang="EN-US">C</span>、四纤双向复用段保护方式；<span lang="EN-US">D</span>、专用保护方式。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">22</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、由于速率太高，<chmetcnv unitname="g" sourcevalue="10" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">10G</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>系统须要解决色散和光功率波动对信噪比的影响。<chmetcnv unitname="g" sourcevalue="10" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">10G</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>系统采用下面那些技术以提高信号的信噪比：<span lang="EN-US">ABCD <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、提高发光功率；<span lang="EN-US">B</span>、提高光板的接收灵敏度；<span lang="EN-US">C</span>、采用色散管理；<span lang="EN-US">D</span>、采用带外<span lang="EN-US">FEC</span>（前向纠错）技术。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 18.0pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">23</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">DWDM</span>系统使用<span lang="EN-US">OADM</span>板对所有光波长进行分叉或上下，以达到灵活组网的目的。目前，<span lang="EN-US">ZXWM-32</span>系统使用的<span lang="EN-US">OADM</span>板可以上下的波长数为：<span lang="EN-US"> B <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; tab-stops: 18.0pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">16</span>波；<span lang="EN-US">B</span>、<span lang="EN-US">4</span>波；<span lang="EN-US">C</span>、<span lang="EN-US">32</span>波；<span lang="EN-US">D</span>、<span lang="EN-US">8</span>波。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 18.0pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">24</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在<span lang="EN-US">SDH</span>系统中定义<span lang="EN-US">S1</span>字节的目的是：<span lang="EN-US"> ACD <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 41.3pt; tab-stops: 18.0pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、避免定时成环；<span lang="EN-US">B</span>、当定时信号丢失后向网管告警；<span lang="EN-US">C</span>、能使两个不同厂家的<span lang="EN-US">SDH</span>网络组成一个时钟同步网；<span lang="EN-US">D</span>、使<span lang="EN-US">SDH</span>网元能提取最告级别的时钟信号。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">25</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">SDH</span>网络有多种保护形式，下面那几种不属于<span lang="EN-US">SDH</span>网络保护：<span lang="EN-US"> AC <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 40.6pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">DXC</span>自动恢复网；<span lang="EN-US">B</span>、四纤双向复用段保护环；<span lang="EN-US">C</span>、四纤单向复用段保护环；<span lang="EN-US">D</span>、二纤单向复用段保护环。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">26</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">SDH</span>网络中常用的同步方式是： <span lang="EN-US">CD <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、相互同步方式；<span lang="EN-US">B</span>、准同步方式；<span lang="EN-US">C</span>、主从同步方式；<span lang="EN-US">D</span>、伪同步方式。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">27</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、下面那些告警会引发<span lang="EN-US">MS-AIS</span>告警：<span lang="EN-US"> BC <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">AU-LOP</span>；<span lang="EN-US">B</span>、<span lang="EN-US">RS-LOS</span>；<span lang="EN-US">C</span>、<span lang="EN-US">B1</span>超限；<span lang="EN-US">D</span>、<span lang="EN-US">B3</span>超限。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">28</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、业务错连常发生在<span lang="EN-US">SDH</span>网络出现故障的情况下，那些故障会导致业务错连：<span lang="EN-US"> BC <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>A</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、网元失效；<span lang="EN-US">B</span>、网络多处断纤；<span lang="EN-US">C</span>、两网元间单纤断；<span lang="EN-US">D</span>、网元外时钟丢失。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">29</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">II</span>型机、<chmetcnv unitname="g" sourcevalue="10" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">10G</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>和<span lang="EN-US">V2</span>设备中，光线路板常用的尾纤是：<span lang="EN-US">AD <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>A </span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">FC/PC</span>光接头；<span lang="EN-US">B</span>、<span lang="EN-US">SC/APC</span>光接头；<span lang="EN-US">C</span>、<span lang="EN-US">FC/APC</span>光接头；<span lang="EN-US">D</span>、<span lang="EN-US">SC/PC</span>光接头。<span lang="EN-US">
                                <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -21pt; tab-stops: 22.4pt; mso-char-indent-count: -2.0; mso-para-margin-left: 2.0gd;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;">30</span><span style="COLOR: black; FONT-FAMILY: 宋体;">、在中兴通信的系列光通信设备中，有的设备可以实现逻辑子网保护功能，这些设备是：<span lang="EN-US"> ABCD <p></p></span></span></p><p></p><p></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; tab-stops: 22.4pt;"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp; </span>A </span><span style="COLOR: black; FONT-FAMILY: 宋体;">、<span lang="EN-US">II</span>型机；<span lang="EN-US">B</span>、<span lang="EN-US">2500E</span>；<span lang="EN-US">C</span>、<span lang="EN-US">600V2</span>；<span lang="EN-US">D</span>、<chmetcnv unitname="g" sourcevalue="10" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><span lang="EN-US">10G</span><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv><chmetcnv></chmetcnv>。<span lang="EN-US">
                                <p></p></span></span></p><p></p>
时间:  2007-4-13 15:54
作者: sbjepfi

这是传输培训的考题呀，我以前考过
时间:  2007-4-13 16:17
作者: 通望南

quan bu&nbsp; bu zhidao
时间:  2007-4-13 17:20
作者: ikaka

时间:  2007-4-13 17:27
作者: rghost

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l9 level2 lfo1;"><span lang="EN-US" style="COLOR: black; mso-fareast-font-family: 'mso-hansi-font-family:宋体;;"><span style="mso-list: ignore;"><font face="Times New Roman">2、<span style="FONT: 7pt ';">&nbsp; </span></font></span></span><span style="COLOR: black; FONT-FAMILY: 宋体;">在<span lang="EN-US">SDH</span>传送网中，任何类型的通过光纤直接相连的两个网元之间构成复用<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></u>段，接收设备可处理再生段<u><span lang="EN-US"><span style="mso-spacerun: yes;">&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="mso-spacerun: yes;">&nbsp;</span></span></u>开销<span lang="EN-US">
                                <p>填错了吧</p></span></span></p><p>填错了吧</p>
时间:  2007-7-1 17:46
作者: jhydh     标题: 二二二

二二二
时间:  2010-7-7 01:32
作者: ntcsjf

答案错误较多



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