ISPN考试模拟试题(九)

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PTN(IPRAN)合作方考试精编版

一、填空题（每空1分，共计30分）连接检测用来检测相同管理对象组（MEG）域内任意一对MEP间的信号连续性。

传送CC信息的帧是（CV ）帧，3.5倍发送周期内收不到该帧，产生（LOC ）告警。

2.在PTN的三层结构中，用于Wrapping环保护的APS帧是在（TMS ）层处理的。

3.LSP1+1是一种单向保护，只在受影响的节点侧发生倒换；LSP1:1则是一种双向保护，倒换时源宿都需要发生动作，且其中（LSP1:1 ）保护需要ASP协议的支持。

bel标签的（17-300 ）标签值做为WRAPPING和STERRING保护环的保留标签值，所以WRAPPING和STERRING保护环上配置的业务的标签值必须从（301 ）开始。

5.PTN支持时间同步，其实质包含两方面的内容，其中，（频率）同步通过物理层串行比特流提取时钟，（时间）同步由TOP报文实现。

6.CiTRANS 660设备的交叉容量为（160G ），上框所有槽位支持的最大的交叉条目总和是（1022 ）条，GSJ2支持的可配置的交叉最大条目是（1022 ）条。

7.CIR中文名称含义是（承诺信息速率），PIR中文名称是（峰值信息速率）。

8.在网管进行PTN设备添加时，此时管理程序端口是（7889 ），管理程序类型为（ASON ）。

9.CiTRANS 660设备上框支持16～1C槽位支持（1：6 ）、（1：2 ）和（1：1 ）三种TPS保护，16槽位可以保护（17~1C ）槽位。

10.做2M业务时，需要关联PW，此时的PW标签值对应于（2M端口序号），取值范围是（1-16 ）。

11.CiTRANS 620设备支持多种接口，最多支持（ 6 ）FE口，（ 2 ）GE接口。

12.因为保护的需要，WRAPPING保护环上配置的双向业务的标签值必须（不一致）。

所以配置业务时标签间隔应该选（ 1 ）。

13.CiTRANS 620设备做LSP1：1和LSP1+1保护时，工作业务和保护业务标签值必须（一致），CiTRANS 640设备做LSP保护时，工作业务和保护业务标签值必须（不一致）14.目前公司的PTN设备中，不支持网元管理盘带电插拔的是（CiTRANS 640 ）。

2022-2023年国家电网招聘之电网计算机模考模拟试题(全优)

2022-2023年国家电网招聘之电网计算机模考模拟试题(全优)单选题（共20题）1、SNMP协议中，管理站用来接收代理发来的Trap报文时采用的协议及缺省端口号是（）。

A.UDP161B.TCP161C.UDP162D.TCP162【答案】 C2、在互联网中，各种电子媒体按照超链接的方式组织，通常使用（）来描述超链接信息。

A.HTMLB.XMLC.SGMLD.VRML【答案】 A3、阻塞性黄疸（早期）临床生化测定的特点是A.血清中酯型胆红素含量升高B.尿中无尿胆红素C.粪中粪胆素原升高D.尿中尿胆素原升高E.尿中尿胆素升高【答案】 A4、BGP runs over a reliable transport （）. This eliminates the need to implement explicit update fragmentation, retransmission, acknowledgement, and （）. Any authentication scheme used by the transport protocol may be used in addition to BGP's own （）mechanisms. The error notification mechanism used in BGP （）that the transport protocol supports a “graceful” close, i.e., that all outstanding data will be delivered （请作答此空）the connection is closed.A.afterB.beforeC.earlierD.concurrently【答案】 B5、转移指令执行结束后，程序计数器PC中存放的是()A.该转移指令的地址B.顺序执行的下条指令地址C.转移的目标地址D.任意指令地址【答案】 C6、二叉排序树中左子树上所有结点的值均()根结点的值。

IPRAN试题

PTN试题一、填空题（每题2分，共50分）1.CiTRANS 620 EMU 拨号开关K3的第2位用来决定IP地址设置方式，拨为OFF表示通过拨号开关来确定，拨为ON表示由小网管配置来确定。

2.CiTRANS 660设备的交叉容量为160G，上框所有槽位支持的最大的交叉条目总和是1022条，GSJ2支持的可配置的交叉最大条目是1022条3.CiTRANS 660设备上框支持16～1C槽位支持1：6保护、1：2保护和1：1保护三种TPS保护，16槽位可以保护17，18，19，1A,1B,1C////17槽位。

4.CiTRANS 620设备支持多种接口，最多支持2个光FE口和4个电FE口，2个GE接口和16个E1接口。

5.做2M业务时，需要关联PW，此时的PW标签值对应于PW链路号，取值范围是1-16，E1J1盘通过端子板对外提供16路E1的信号接入。

6.对于低阶业务，也就是百兆和2M业务，当业务是做在不同单盘时，VPWS-ID不能重复；当业务是做在同一单盘时，VPWS-ID不能重复；对于高阶业务，也就是千兆业务，当业务是做在不同单盘时，VPWS-ID允许重复7.VPLS提供以太网的多点服务。

LAN口成员是VPLS在用户侧的成员端口。

仿真LAN口是VPLS在系统侧的成员端口。

LAN成员和仿真LAN成员都是虚拟端口。

水平分割打开的端口之间不转发业务。

用于实现EP-TREE和EVP-TREE组网模型。

8.CiTRANS 620设备做基于VLAN业务时，每条VPWS最多添加1条流，做2M业务时，每条VPWS最多添加1条流。

9.因为保护的需要，WRAPPING保护环上配置的双向业务的标签值必须不相同。

所以标签间隔应该不为010.CiTRANS 620设备做LSP1：1和LSP1+1保护时，工作业务和保护业务标签值必须相同，CiTRANS 640设备做LSP保护时，工作业务和保护业务标签值必须不同11.VPWS的英文全称是VIRTUAL PRIVA TE WIRE SERVICE,中文翻译为虚拟专用线服务12.VPLS的英文全称是Virtual Private LAN Service ，中文翻译为虚拟专用局域网服务13.以太网业务可分为E-LINE、E-TREE和E-LAN三种。

ZCNE模拟考试试题（有答案）

ZCNE模拟考试试题（有答案）一．单项选择题（共20题）1已知某台路由器的路由表中有如下两个表项ZXR10# show ip route IPv4 Routing Table: Dest Mask Gw Interface Owner pri metric 9.0.0.0 255.0.0.0 1.1.1.1 pos3_2/1 OSPF 110 50 9.1.0.0 255.255.0.0 2.2.2.2 Ethernet_2/1 RIP 120 5 如果该路由器要转发目的地址为9.1.4.5的报文，则下列说法中正确的是1) 选择第一项，因为OSPF协议的优先级高2) 选择第二项，因为RIP协议的花费值（Metric）小3) 选择第一项，因为出口是POS，比Ethernet速度快4) 选择第二项，因为该路由项对于目的地址9.1.4.5来说，是更精确的匹配参考答案：42 如下访问控制列表的含义是access-list 102 deny udp 129.9.8.10 0.0.0.255 202.38.160.100.0.0.255 ge 1281) 规则序列号是102，禁止从202.38.160.0/24网段的主机到129.9.8.0/24网段的主机使用端口大于等于128的UDP协议进行连接2) .规则序列号是102，禁止从202.38.160.0/24网段的主机到129.9.8.0/24网段的主机使用端口小于128的UDP协议进行连接3) 规则序列号是102，禁止从129.9.8.0/24网段的主机到202.38.160.0/24网段的主机使用端口小于128的UDP协议进行连接4) 规则序列号是102，禁止从129.9.8.0/24网段的主机到202.38.160.0/24网段的主机使用端口大于等于128的UDP协议进行连接参考答案：43 下列哪一个通配符掩码与子网172.16.64.0/27的所有主机匹配1) 255.255.255.02) 255.255.224.03) 0.0.0.2554) 0.0.31.255参考答案：44 PPP验证失败后，将由Authenticate阶段转入（）阶段1) Dead2) Network3) Establish4) Terminat参考答案：45 FTP控制连接端口号（）1) 202) 213) 234) 25参考答案：26 在TCP/IP协议栈中，下面哪一个能够唯一地确定一个TCP连接：1) 源IP地址和源端口号2) 源IP地址和目的端口号3) 目的地址和源端口号4) 源地址、目的地址、源端口号和目的端口号参考答案：47 10.1.0.1/17 的广播地址是1) 10.1.128.2552) 10.1.63.2553) 10.1.127.2554) 10.1.126.255参考答案：38 下面哪一类服务使用了滑动窗口技术：1) 可靠数据传输2) 面向连接的虚电路3) 高效的全双工传输4) 流量控制参考答案：49 在半双工以太网中，如果交换机缓冲区满，将采取（）方式通知源端设备暂停发送数据1) 发送PAUSE帧至源端2) 采用backpressure方式3) 交换机的该端口down掉4) 自动增加端口速率参考答案：210 IP扩展访问列表的数字标示范围是多少1) 0-992) 1-993) 100-1994) 101-200参考答案：311 TFTP服务器使用何种传输层协议，端口号是多少？1) UDP 692) TCP 673) TCP 234) UDP 53参考答案：112 对于RIP协议，可以到达目标网络的跳数（所经过路由器的个数）最多为1) 122) 153) 164) 没有限制参考答案：213 OSPF使用IP报文直接封装协议报文，使用的协议号是1) 232) 893) 5204) 170参考答案：214 以下属于正确的主机IP地址的是：（）1) 127.32.5.622) 162.111.111.1113) 202.112.5.04) 224.0.0.5参考答案：215 与10.110.12.29 ,掩码 255.255.255.224 属于同一网段的主机IP 地址是：（）1) 10.110.12.02) 10.110.12.303) 10.110.12.314) 10.110.12.32参考答案：216 ARP协议的作用是：（）1) 将端口号映射到IP地址2) 连接IP层和TCP层3) 广播IP地址4) 将IP地址映射到第二层地址参考答案：417 应用程序PING 发出的是___报文：（）1) TCP 请求报文。

IPS培训考题

IPS用户培训试题姓名：_________ 部门：__________________一、判断题1、设置ICP主控到主控通道路由和主控到单板路由的命令是一致的，均为:SET-ICP-MBR:HOST=,GROUPID=; ( )2、设置ICP路由组内容的命令:SET-ICP-ROUTEGROUP:GROUPID=,CHANNELID=；中GROUPID的意义为通道号( )3、主控板加载方式均可通过板内的跳线设置（）4、IPS200多模块应用方式下，需设置独立模块完成系统管理和信令网管理功能（）5、MFIP、MPPII板“RUN”指示灯闪的频率为0.5秒/次（）二、填空题1、IPS200模块中，时钟板板名为________,其状态FREE代表______，TRACE代表________,LOCKED代表____________2、OMS中，某端局信令路由通过两个信令转接点负荷均分，则路由配置中“组1业务份额”应填写______3、一条64K信令的传输占用一个________，一条2M信令的传输占用一个________4、用OMS配置数据时，某端局局向号为30，则系统默认生成的资源组号为_____、_____5、将本机C盘根目录下vxworks文件上传至主控板内存中的命令是_________________________6、用命令DISPLAY-MTP-DSPROUTE:NETID=10,显示的信令路由状态"available"表示该信令路由_____7、用命令WA TCH-ICP-STA TE显示ICP通道状态，servicestate=0表示______，servicestate=1表示______8、当主控板类型为MCUm时，默认加载的局数据文件名应为__________________9、主控板共有四种加载方式，分别为_________、_________、_________、_________10、号码分析叶子配置中，剩余号码模式串中XXXX代表的号码数目为__________，Z表示的号码长度为______________。

第三方无线-无线优化-通用-L3-202011-B场考试题库9

【多选题】上行PUCCH反馈的控制信令包括：A：PMI B：CQI C：RI D：QoS【正确答案】A、B、C【多选题】"UE的传输模式包括：A：Single-antenna port ：port0、port5B：Transmit diversity&spatial multiplexingC：Open-loop&Closed-loop spatial multiplexingD：Multi-user MIMO【正确答案】A、B、C、D【多选题】"下行定义了那几种参考信号：A：小区参考信号B：Sounding参考信号C：MBSFN参考信号D：UE参考信号【正确答案】A、C、D【多选题】下行物理信号包括：A：参考信号B：解调用参考信号C：同步信号D：Sounding参考信号【正确答案】A、C【多选题】天线按照方向性，可分为：A：全向天线B：定向天线C：线状天线D：面状天线【正确答案】A、B【多选题】"LTE支持的调度方式包括：A：Proportional FairB：Proportional DemandC：Max Aggregate ThroughputD：以上都不是【正确答案】A、B、C【多选题】"小区间干扰抑制技术主要包括有：A：小区间干扰随机化（Inter-cell interference randomisation）B：小区间干扰消除（Inter-cell interference cancellation）C：小区间干扰协调（ICIC：Inter-cell interference coordination）D：小区间干扰平均（Inter-cell interference average）【正确答案】A、B、C【多选题】基于覆盖的频内切换可以用哪个事件判决：A：A1事件B：A2事件C：A3事件D：A5事件【正确答案】C、D【多选题】对于FDD，主同步信号在时隙（）中传输：A：TS0 B：TS1 C：TS10 D：TS11【正确答案】A、C【多选题】PUSCH支持的上报模式包括：A：单天线端口B：传输分集C：开环空间复用D：闭环空间复用【正确答案】A、B、C、D【多选题】"LTE上行实现半静态或动态频率重用方案的指示：A：HII （High Interference Indicator）B：TLI （Traffic Load Indicator）C：LB （Load Blance）D：OI （Overload Indicator）【正确答案】A、D【多选题】物理信道PDSCH映射为传输信道为：A：BCH B：MCH C：PCH D：DL-SCH【正确答案】C、D【多选题】"LTE定时同步包括：A：无线链路监测（Radio link monitoring）B：小区间同步（Inter-cell synchronisation）C：发射定时调整（Transmission timing adjustment）D：以上都不对【正确答案】A、B、C【多选题】"为有效支持Localized、Distributed和MIMIO传输，E-UTRA支持的CQI报告包括：A：窄带类型B：宽带类型C：多频带类型D：MIMO类型【正确答案】B、C、D【多选题】"TTI bundling也称为子帧捆绑，是LTE系统中一种特殊的调度方式，它是针对处于小区边缘的VoIP用户而设计的，其定义是：A：在连续的4个上行子帧发射同一传输块B：且只在第一个TTI对应发射时刻有PDCCHC：只在最后一个TTI（即，第4个TTI）对应的发射时刻有PHICHD：重传也是针对4个连续上行TTI发射【正确答案】A、B、C、D【多选题】"下面哪种场景可以使用TTI bundling：A：对于覆盖面积大的小区中处于小区边缘的用户最好是使用TTI Bundling。

第三方无线-无线优化-通用-L3-201912-B场考试题库A9 04

04118. 下列关于PCI的说法，正确的的是（）A.LTE邻小区间应避免PCI模3冲突B.PCI也用于计算PCFICH偏置C.在1T1R下，须避免邻小区间PCI模6干扰D.LTE邻小区间应避免PCI模30冲突E.PCI总共504个答案：ABCDE119. 机房监控人员可以通过OMC将以下哪些eNB设备日志上传到本地？（）A.eNB黑匣子文件B.eNB告警日志C.eNB异常日志D.eNB事件日志答案：ABCD120. TDLTE的UE设定为A3事件触发同频切换，则增大（）时，可以减少A3事件的触发。

A.cellIndividualOffset_nB.cellIndividualOffset_sC.eventA3OffsetD.hysteresis答案：BCD121. 以下哪些是OMC的产品特点（）A.OMC可集中管理EPC和eNode B，监控全网运行情况。

B.OMC具备高可靠性，如服务器双机备份、服务器状态实时监控和自动恢复、数据定时备份等。

C.通过web方式，OMC客户端在登录时自动完成安装和升级D.OMC面向对象、面向方面、模块化设计，采用开放式工业标准技术，易于扩展和移植。

答案：ABCD122. LTE上行功率控制的方式有:A.外环功控B.内环功控C.闭环功控D.开环功控答案：ACD123. 下面对多天线应用场景的建议正确的是（）A.在密集城区/建站困难的地方使用小型化天线B.盲点地区可采用2通道天线进行补盲C.在共天馈的应用场景可使用独立电调天线或内置合路器天线D.郊区农村可采用8通道天线答案：ABCD124. 下面选项中，属于LTE下行物信道的有（）A.广播信道PBCHB.控制信道PDCCHC.物理控制格式指示信道PCFICHD.共享信道PDSCH答案：ABCD125. 如下哪个因素会影响UE的小区选择重选过程?（）A.邻区间优先级的配置B.小区信号分布C.UE的发射功率能力D.UE的CAT类型答案：ABC试题数:125，重复命题数：6，重复命题率:4.80%1LTE下行抗干扰能力最强的控制信道是？A.PBCHB.PHICHC.PCFICHD.PDCCH答案：A2在同频邻区质量高于服务小区质量时上报，源eNodeB启动同频切换请求的事件是（）A.A2B.A4C.A1D.A3答案：D3以下哪项命令为能打印出小区状态信息()A.ADD CELLB.RMV CELLC.DSP CELLD.MOD CELL答案：C4在3GPP网管模型中，IF1接口是指:A.EMS与NE之间的接口B.NMS与其他管理系统之间的接口C.EMS与NMS之间的接口D.NE与NMS之间的接口答案：A5单站测试验证的重点是______A.能否进行业务B.设备问题和工程安装问题C.小区是否正常工作D.下载速率是否满足要求答案：C6. TD-LTE中关于切换下面说法不正确的是（）A.同频还是异频切换取决于服务小区与目标小区中心频点是否相同B.下发给终端有关测量信息不再用单独一条消息下发C.UE上报测量报告依然是一条独立消息D.可以触发接力切换，也可触发硬切换答案：D7抑制同频邻区干扰的手段不包括（）A.调整RS功率B.调整天线方位角和下倾角C.增加塔放D.调整天线挂高答案：C8若要核查小区TAC设置，需求导出哪项配置数据A.小区网络规划B.基站信息C.本地小区规划D.其他均不对答案：A9在下行功率分配中，对于使用16QAM 或64QAM的PMCH，UE PMCH EPRE与MBSFN RS EPRE的比值等于（）。

2023年思科认证模拟考试试题及答案(Word版)

2023年思科认证模拟考试试题及答案模拟试题（一）1、A.流量很高时B.断开的链路重建后C.上层协议要求可靠性极高时D.未妥善实现冗余拓扑时答案：D2、为确定接口的操作状态，要使用哪个命令（）A.displsy interface statusB.show interfaceC.show status interfaceD.display interface正确答案：B3、在广域网结构中使用什么连接DTE和DCE设备( )。

A.本地环路B.接口线缆C.路由器D.交换机正确答案：B4、哪个命令用来设置Cisco设备串行接口的默认封装( )A.Router(config)encapsulation hdlcB.Router(config)encapsulation default hdlcC.Router(config-if)encapsulation hdlcD.Router(config-if)encapsulation ppp正确答案：C5、RIP的管理距离为( )。

A.0C.110D.120正确答案：D有两台运行RSTPPVST＋的交换机,它们之间有4条连接,你想在不牺牲RSTP提供的弹性的情况下提高带宽。

为此,除已提供的默认配置外,你可在这两台交换机之间配置什么?( )6、A.配置PortFast和BPDU防护，以提高会聚速度B.给RSTP PVST+配置非等成本负载均衡C.将全部4条链路捆绑为一条EtherChannelD.配置PPP并使用多链路答案：C7、You are working as a network technician at Ezonexam University, when you get a call from the Engineering Faculty. They’re complaining that they’re receiving obsolete information from the Business Faculty’s network traffic broadcasts.What can you do to contain the Business Faculty’s broadcast while still keeping it connected to the internet and the enterprise services of the University? (Select all valid answer choices)A. Use half and full-duplex Ethernet on the Engineering Department LANB. Establish a VTP domain to minimize the obsolete trafficC. Change the switch IP address of the switchD. Create separate VLANs and subnets for the two departments and route between the twoE. Provide greater bandwidth to the Engineering Department LANF. Place the business department on a separate subnet and route between networks正确答案：DFD,F 解析：Explanation:In order to prevent the broadcast and link level multicast traffic separated between the departments, they need to be isolated at layer two. This can be accomplished in two ways. The first is to create separate VLANs and place each department into a different one. The second method would be to separate the two departments into two completely different networks, and route between them.Incorrect Answers:A. Mixing the use of half and full duplex will make no difference to the number of broadcasts sent.B. Trunking is only useful in networks that already contain VLANs.C. This will make no difference, as all users will still be contained within the same IP subnet.E. The amount of bandwidth involved will not have any impact on the amount of broadcasts that are sent and received.思科为何要开发专用的STP和RSTP扩展PVST＋?( )8、A.通过优化根网桥的配置，提高会聚速度、优化数据流传输路径B.通过优化非根网桥的配置，提高会聚速度、优化数据流传输路径C.PVST+使得能够更迅速地丢弃非IP帧D.PVST+实际上是IEEE标准802.1w答案：A9、Which fields are included in the TCP header? (Choose three).A. Source PortB. Acknowledgement NumberC. Request NumberD. Destination AddressE. WindowF. Data正确答案：ABEA,B,E 解析：Explanation:TCPheader:Sourc e Port: 16 bits.Destination Port: 16 bits.Sequence Number: 32 bits.The sequence number of the first data byte in this segment. If the SYN bit is set, the sequence number is the initial sequence number and the first data byte is initial sequence number + 1.Acknowledgment Number: 32 bits.If the ACK bit is set, this field contains the value of the next sequence number the sender of the segment is expecting to receive. Once a connection is established this is always sent.Data Offset: 4 bits.The number of 32-bit words in the TCP header. This indicates where the data begins. The length of the TCP header is always a multiple of 32 bits.Reserved: 3 bits.Must be cleared to zero.ECN, Explicit Congestion Notification: 3 bits.Added in RFC 3168.Control Bits: 6 bits.Window: 16 bits, unsigned.The number of data bytes beginning with the one indicated in the acknowledgment field which the sender of this segment is willing to accept.Checksum: 16 bits.This is computed as the 16-bit one’s complement of the one’s complement sum of a pseudo header of information from the IP header, the TCP header, and the data, padded as needed with zero bytes at the end to make a multiple of two bytes.Urgent Pointer: 16 bits, unsigned.If the URG bit is set, this field points to the sequence number of the last byte in a sequence of urgent data.Options: 0 to 44 bytes.Options occupy space at the end of the TCP header. All options are included in the checksum. An option may begin on any byte boundary. The TCP header must be padded with zeros to make the header length a multiple of 32 bits.Data: Variable length.10、You need subnet a Ezonexam network segment. How many subnetworks and hosts are available per subnet if you apply a /28 mask to the 210.10.2.0 class C network?A. 30 networks and 6 hosts.B. 6 networks and 30 hosts.C. 8 networks and 32 hosts.D. 32 networks and 18 hosts.E. 16 networks and 14 hosts.F. None of the above正确答案：EE 解析：Explanation:A 28 bit subnet mask (11111111.11111111.11111111.11110000) applied to a class C network uses a 4 bits for networks, and leaves 4 bits for hosts. Using the 2n-2 formula, we have 24-2 (or 2x2x2x2-2) which gives us 14 for the number of hosts, and the number of networks is 24 = 16.Incorrect Answers:A. This would be the result of a /29 (255.255.255.248) network.B. This would be the result of a /27 (255.255.255.224) network.C. This is not possible, as we must subtract two from the subnets and hosts for the network and broadcast addresses.D. This is not a possible combination of networks and hosts.11、Show cdp interface命令是用于显示以下哪一项的（）A.CDP的时间值和接口状态B.邻居路由器的接口配置C.邻居设备的IP地址D.CDP保持时间正确答案：A12、哪个命令用来设置Cisco设备串行接口的默认封装( )A.Router(config)encapsulation hdlcB.Router(config)encapsulation default hdlcC.Router(config-if)encapsulation hdlcD.Router(config-if)encapsulation ppp正确答案：C13、下图中如果允许192.168.1.0/24和10.0.0.0/8的网络之间通信，必须要配置的两条命令是什么( )A.A(config)iproute 10.0.0.0 255.0.0.0 172.16.40.2B.A(config)iproute 10.0.0.0 255.0.0.0 S0/0/0C.A(config)iproute 10.0.0.0 255.0.0.0 10.0.0.1D.B(config)iproute 192.168.1.0 255.255.255.0 172.16.40.1E.B(config)iproute 192.168.1.0 255.255.255.0 172.16.40.2F.Biproute 192.168.1.0 255.255.255.0 192.168.1.1正确答案：AD14、在启用IGRP协议时，所需要的参数是：( )A.网络掩码B.子网号C.自治系统号D.跳数正确答案：C15、请参见图示。

信息安全技术模拟考试题含答案

信息安全技术模拟考试题含答案一、单选题（共59题，每题1分，共59分）1.下面关于数字签名的描述中错误的是（）。

A、通常能证实签名的时间B、通常能对内容进行鉴别C、必须采用DSS标准D、能被第三方验证正确答案：C2.属于域名服务系统DNS中所维护的信息的是（）。

A、IP地址与MAc地址的对应关系B、CPU类型C、域名与MAC地址的对应关系D、域名与IP地址的对应关系正确答案：D3.密码学的发展经历了三个阶段：手工加密阶段、（）和计算机加密阶段。

A、软件加密B、人为加密C、机械加密阶段D、硬件加密正确答案：C4.为了保证传输中信息不被非法篡改，可通过（）技术来实现。

A、解密B、消息认证C、身份识别D、加密正确答案：B5.保证数据的不可否认性就是A、保证电子商务交易各方的真实身份B、保证因特网上传送的数据信息不被第三方监视和窃取C、保证因特网上传送的数据信息不被篡改D、保证发送方不能抵赖曾经发送过某数据信息正确答案：D6.Ipsec可以分为传输模式和（）。

A、加密模式B、隧道模式C、认证模式D、签名模式正确答案：B7.（）是指通过各种方式获取所需要的信息。

A、攻击实施B、身份识别C、信息收集D、隐身巩固正确答案：C8.（）是把文件或数据库从原来存储的地方复制到其他地方的操作。

A、声音识别B、设备安全C、数据备份D、环境安全正确答案：C9.（）主要包括媒体数据的安全及媒体本身的安全，如预防删除文件、格式化硬盘、线路拆除、意外疏漏等操作失误导致的安全威胁。

A、设备安全B、环境安全C、媒体安全D、人身安全正确答案：C10.IPSec协议是开放的VPN协议。

对它的描述有误的是：A、适应于向IPv6迁移B、支持动态的IP地址分配C、提供在网络层上的数据加密保护D、不支持除TCP/IP外的其它协议正确答案：B11.（）是指如果数据有变动或数据变动达到指定的阈值时才对数据进行备份。

A、系统备份B、环境备份C、完全备份D、增量备份正确答案：D12.网络服务提供商的网址通常以结尾。

思科认证考试(CCNA)考试模拟题集锦(1-71题)及答案培训资料

思科认证考试(C C N A)考试模拟题集锦(1-71题)及答案思科认证考试（ＣＣＮＡ）考试模拟题集锦(1-71题)及答案19及答案1. [OxNx] During a TFTP transfer using Cisco Routers what is the numeric value, in decimal, of the destination port field of the User Datagram Protocol (UDP) header? a) 96b) 47c) a random number above 1024d) 69e) none of the above2. [CxNx] What is the standard encapsulation method used by Cisco routers for the Internet Protocol (IP) on it’s Ethernet interfaces?a) SNAPb) ARPAc) NOVELL-ETHERd) DARPAe) Ethernet_802.33. [CxNx] What will be the correct command on a Cisco router to set the IP address of an interface assuming you are at the "router(config-if)#" prompt?a) ip address 1.1.1.1 255.255.255.0b) ip address 1.1.1.1c) ip 1.1.1.1d) ip 1.1.1.1 255.255.255.0e) none of the above4. [CxNx] Which commands will display the IP addresses of all interfaces on a Cisco Router? (Choose all that apply)a) show ip routeb) show ip addressc) show ip interfaced) show interfacee) display ip addresses5. [CxNx] Which of the following commands will display the contents of the ARP cache of your Cisco router?a) show ip arp cacheb) show ip routec) show ip arpd) show arpe) there is no way to display the ARP cache6. [CxNx] Reverse Address Resolution Protocol (RARP) is the process:a) Where an IP host resolves it’s IP address by broadcasting it’s MAC address to the network and a BOOTP server assigns it an IP address.b) Where an IP host resolves it’s MAC address by broadcasting to the local network it’s IP address.c) Where an IP host tries to resolve the MAC address of a destination by sending a network broadcast. The destination responds to the broadcast with it’s MAC address.d) Where an IP host resolves a destination IP address by sending a broadcast on the local network and the destination host responds with it’s IP address.7. [OxNx] Which of the following applications requires the connection-oriented layer four protocol, TCP? (Choose all that apply)a) Telnetb) FTPc) TFTPd) SNMPe) none of the above8. [RxNx] Which of the following are link state Routing Protocols.(Choose all that apply.)a) IPb) OSPFc) RIPd) EIGRPe) IS-IS9. [CxNx] Of the following commands, identify the correct one for clearing the IP arp table in memory of the router.a) clear ip arp-cacheb) clear ip arp-tablec) clear arp-cached) clear arp-tablee) clear arp-ram10. [CxNx] Which of the following explains the correct definition of administrative distance as it pertains to Cisco’s IOS?a) The process by which routers select an administrator for an autonomous system.b) The process where a router will select the best path to a destination network.c) The process where a router will distance itself from other routers due to it’s lack of administrative experience.d) The process where a router will prioritize routing protocols so that in the event two routing protocols have conflicting next hop addresses, the routing protocol with the lowest administrative distance will take priority.e) The process where a router will prioritize routing protocols so that in the event two routing protocols have conflicting next hop addresses, the routing protocol with the highest administrative distance will take priority.11. [ExNx] Collisions occur whena) multiple packets are placed on a serial linkb) multiple stations listen for traffic and transmit at the same timec) when multiple tokens are on a ring simultaneouslyd) beaconing process takes place12. [RINx] How many subnets are possible with a Class C address and a subnet mask of255.255.255.252?a) 32b) 30c) 60d) 62e) 413. [RxNx] What commands will list all protocols that are currently being routed? (Choosea) show ip protocolb) show protocolc) show rund) show starte) All of the above14. [xxNx] Which of the following are true of access lists?a) Access list should have at least one permit statement.b) The last configured line should always be a permit statement.c) Every access-list will implicitly deny all traffic.d) Access-lists are processed top down.e) All of the above.15. [xxNx] If the access-group command is configured on an interface and there is noaccess-list created which of the following is most correct?a) An error message will appear.b) The command will be executed and deny all traffic out.c) The command will be executed and permit all traffic out.d) The command will be executed and permit all traffic in and out.e) The command will be executed and deny all traffic in and out.16. [xxNx] What is the result of the command?" access-list 101 permit tcp any 172.16.0.0 0.0.255.255 established"a) telnet sessions will be permitted regardless of the source addressb) telnet sessions will be denied regardless of the source addressc) telnet sessions will be denied if initiated from any address other than 172.16.0.0networkd) telnet sessions will be permitted to the 172.16.0.0 network onlye) telnet sessions will be denied to the 172.16.0.0 network only17. [xxNx] Which is generally true of the location of access-lists? (Choose all that apply.)a) Standard lists will most likely be placed close to the destination.b) Standard lists will most likely be placed close to the source.c) Extended lists will most likely be placed close to the destination.d) Extended lists will most likely be placed close to the source.e) It does not matter.18. [RxNx] Which of the following is most correct?a) IP is to TCP. as IPX is to SPX.b) RTMP is to Appletalk as IP RIP is to IP.c) NLSP is to IPX as OSPF is to IP.d) a is true.e) b is true.f) a & b are true.g) c is true.h) b & c are true.i) a, b and c are true.19. [ExNx] If Host A sends a packet to Host B over ethernet and Host B is not active:a) The packet will time out.b) The packet will be removed by Host A.c) The NVRAM of Host B will remove the packet.e) The packet will be removed by the token monitor.Coding Key and InformationThe first character represents the category of question.A - ATMB - BridgingC - Cisco specificE - EthernetF - Frame relayH - HDLCI - FDDIN - ISDNO - OSI modelP - PPPR - RoutingS - SwitchingT - Token ringX - X.25x - Not applicableThe second character represents protocol.A - AppletalkB - Banyan VinesD - DecnetI - IPL - Dial on DemandN - NLSPO - OSPFX - IPXx - Not ApplicableThe third character represents the certification that the question will help you prepare for.N - CCNA Exam #640-407P - CCNPAdvanced Cisco Router Configuration (ACRC) Exam 640-403Cisco LAN Switch Configuration (CLSC) Exam #640-404Cisco Monitoring and Troubleshooting Dial-up Services Exam #640-405Cisco Internetworking Troubleshooting ( CIT) Exam #640-406D - CCDA & CCDPCisco Design Specialist Exam #9E0-004Cisco Internetwork Design#640-025We will reserve the fourth character for future use.As an example, when you come across a question coded "BXDx", it signifies a question that will help you gain the CCDA or CCDP certification.CCNA试题1-19答案1. [OxNx] During a TFTP transfer using Cisco Routers what is the numeric value, in decimal,a) 96b) 47c) a random number above 1024d) 69e) none of the aboveAnswerd) 69Here is a sampling of other port numbers and the application they are associated with. The first 8 of these protocols are automatically forwarded through the router by using thehelper-address commandTrivial File Transfer (TFTP) (port 69)Domain Name System (port 53)IEN-116 Name Server (port 42)Time service (port 37)NetBIOS Name Server (port 137)NetBIOS Datagram Server (port 138)Boot Protocol (BootP) client and server datagrams (port 67)TACACS service (port 49)Simple Mail Transfer Protocol (25)File Transfer Protocol (21)Simple Network Management Protocol (161)2. [CxNx] What is the standard encapsulation method used by Cisco routers for the Internet Protocol (IP) on it’s Ethernet inte rfaces?a) SNAPb) ARPAc) NOVELL-ETHERd) DARPAe) Ethernet_802.3Answerb) ARPASNAP is the default encapsulation for a token ring interface NOVELL-ETHER is the default encapsulation for a ipx interface.3. [CxNx] What will be the correct command on a Cisco router to set the IP address of an interface assuming you are at the "router(config-if)#" prompt?a) ip address 1.1.1.1 255.255.255.0b) ip address 1.1.1.1c) ip 1.1.1.1d) ip 1.1.1.1 255.255.255.0e) none of the aboveAnswera) ip address 1.1.1.1 255.255.255.0If you are not in the configuration mode, the ip address can be set by using the setup mode. Configuring interface Ethernet0/0:Is this interface in use? [yes]:IP address for this interface [10.10.10.1]: 10.10.10.1Number of bits in subnet field [16]: 16Class A network is 10.0.0.0, 16 subnet bits; mask is /24Take note when using the setup mode the mask is configured using the number of subnet bits.4. [CxNx] Which commands will display the IP addresses of all interfaces on a Cisco Router? (Choose all that apply)a) show ip routeb) show ip addressc) show ip interfaced) show interfacee) display ip addressesAnswerc) show ip interfaced) show interfaceExamples of each of these commands are shown below:Router_A#sh int e0/0Ethernet0/0 is up, line protocol is upHardware is AmdP2, address is0010.7b15.bd41(bia 0010.7b15.bd41)Internet address is 10.10.10.1/24MTU 1500 bytes, BW 10000 Kbit,DLY 1000 usec,rely 255/255, load 1/255Encapsulation ARPA, loopback not set,keepalive set (10 sec)ARP type: ARPA, ARP Timeout 04:00:00Last input never, output 00:00:06,output hang neverLast clearing of "show interface"counters neverQueueing strategy: fifoOutput queue 0/40, 0 drops;input queue 0/75,0 drops5 minute input rate 0 bits/sec,0 packets/sec5 minute output rate 0 bits/sec,0 packets/sec0 packets input, 0 bytes,0 no bufferReceived 0 broadcasts, 0 runts,0 giants,0 throttles, 0 input errors, 0 CRC,0 frame, 0 overrun, 0 ignored,0 input packets with dribblecondition detected127 packets output, 11802 bytes,0 underruns0 output errors, 0 collisions,2 interface resets0 babbles, 0 late collision,0 deferred0 lost carrier, 0 no carrier0 output buffer failures, 0 outputbuffers swapped outRouter_A#sh ip int e0/0Ethernet0/0 is up, line protocol is upInternet address is 10.10.10.1/24Broadcast address is 255.255.255.255Address determined bynon-volatile memoryMTU is 1500 bytesHelper address is not setDirected broadcast forwarding is enabledOutgoing access list is not setInbound access list is not setProxy ARP is enabledSecurity level is defaultSplit horizon is enabledICMP redirects are always sentICMP unreachables are always sentICMP mask replies are never sentIP fast switching is enabledIP fast switching on the sameinterface is disabledIP multicast fast switching is enabledRouter Discovery is disabledIP output packet accounting is disabledIP access violation accounting isdisabledTCP/IP header compression is disabledProbe proxy name replies are disabledGateway Discovery is disabledPolicy routing is disabledNetwork address translation is disabled5. [CxNx] Which of the following commands will display the contents of the ARP cache of your Cisco router?a) show ip arp cacheb) show ip routed) show arpe) there is no way to display the ARP cacheAnswerc) show ip arpExample:Router_A#sh ip arpProtocol Address Age(min) Hardware Address Type InterfaceInternet 1.1.1.2 - 0010.7b15.bd50 ARPA FastEthernet1/0Internet 10.10.10.1 - 0010.7b15.bd41 ARPA Ethernet0/06. [CxNx] Reverse Address Resolution Protocol (RARP) is the process:a) Where an IP host resolves it’s IP address by broadcasting it’s MAC address to the network and a BOOTP server assigns it an IP address.b) Where an IP host resolves it’s MAC address by broadcasting to the local network it’s IP address.c) Where an IP host tries to resolve the MAC address of a destination by sending a network broadcast. The destination responds to the broadcast with it’s MAC address.d) Where an IP host resolves a destination IP address by sending a broadcast on the local network and the destination host responds with it’s IP address.e)There is no such process.Answera) Where an IP host resolves it’s IP address by broadcasting it’s MAC address to the network and a BOOTP server assigns it an IP address.Choice C describes Address Resolution Protocol (ARP). A host never has to resolve it’s o wn MAC address. The MAC address is burned into the Network Interface card. When the host is booted the MAC address will be loaded into memory.7. [OxNx] Which of the following applications requires the connection-oriented layer four protocol, TCP? (Choose all that apply)a) Telnetb) FTPc) TFTPd) SNMPe) none of the aboveAnswera) Telnetb) FTPTFTP and SNMP use layer 4 UDP.8. [RxNx] Which of the following are link state Routing Protocols.(Choose all that apply.)a) IPb) OSPFc) RIPd) EIGRPe) IS-ISb) OSPFe) IS-ISA link state routing protocol advertises, to it’s neighbors, the state of the link whenthe state of the link changes.A distance vector routing protocol advertises its routing table periodically.9. [CxNx] Of the following commands, identify the correct one for clearing the IP arp table in memory of the router.a) clear ip arp-cacheb) clear ip arp-tablec) clear arp-cached) clear arp-tablee) clear arp-ramAnswerc) clear arp-cacheIf you have changed an ip address or a NIC card on a host you might use this command toreset the cache.10. [CxNx] Which of the following explains the correct definition of administrativedistance as it pertains to Cisco’s IOS?a) The process by which routers select an administrator for an autonomous system.b) The process where a router will select the best path to a destination network.c) The process where a router will distance itself from other routers due to it’s lack of administrative experience.d) The process where a router will prioritize routing protocols so that in the event two routing protocols have conflicting next hop addresses, the routing protocol with the lowest administrative distance will take priority.e) The process where a router will prioritize routing protocols so that in the event two routing protocols have conflicting next hop addresses, the routing protocol with thehighest administrative distance will take priority.Answerd) The process where a router will prioritize routing protocols so that in the event two routing protocols have conflicting next hop addresses, the routing protocol with the lowest administrative distance will take priority.Cisco uses administrative distances (AD) to measure the reliability of the routing protocol. The lower the (AD) the more reliable the protocol.Router_C#sh ip routeCodes: C - connected, S - static,I - IGRP, R - RIP,M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF,IA - OSPF inter areaN1 - OSPF NSSA external type 1, N2 - OSPFNSSA external type 2E1 - OSPF external type 1,E2 - OSPF external type 2,i - IS-IS, L1 - IS-IS level-1,L2 - IS-IS level-2, * -candidate defaultU - per-user static route, o - ODRGateway of last resort is not set172.16.0.0/24 is subnetted, 2 subnetsC 172.16.1.0 is directly connected,Serial1C 172.16.2.0 is directly connected,Serial0I 10.0.0.0/8 [100/8576] via 172.16.1.1,00:00:09, Serial1[100/8576] via 172.16.2.1, 00:00:19,Serial0The 100 in bold is the administrativedistance for IGRP.A partial list of administrative distances is included below:Protocol ADEIGRP 90IGRP 100OSPF 110RIP 120BGP 180If a router hears a IP RIP and a IGRP update for the same network the router will discard the rip information. IP RIP uses h op count as it’s metric, while IGRP uses a composite metric including bandwidth and load, speed is the primary consideration.11. [ExNx] Collisions occur whena) multiple packets are placed on a serial linkb) multiple stations listen for traffic and transmit at the same timec) when multiple tokens are on a ring simultaneouslyd) beaconing process takes placeAnswerb) multiple stations listen for traffic and transmit at the same timeCollisions is a term that is used in an ethernet environment. Ethernet can be described as a listen then transmit scenario. First a station will listen for traffic if no traffic is sensed then a transmission will take place. If two stations transmit at the same time collisions will occur. The first station to detect the collision sends out a jamming signal to alert all stations a collision has occurred. At this point these stations set up a random interval timer when the timer expires re-transmission will occur.Token ring is a token passing process a station can transmit only when he has the token. There never can be multiple tokens on the ring. Early token release allows up to two data frames to be transmitted on a token ring LAN at the same time. Collisions do not occur on a token ring.Because of the point to point nature of serial links collisions do not occur.Beaconing is a term used in a token passing environment.12. [RINx] How many subnets are possible with a Class C address and a subnet mask of 255.255.255.252?a) 32b) 30c) 60d) 62e) 4Answerd) 62The above mask is using 6 bits to describe subnets. The formula used to determine the number of subnets (not including the all 0’s or all 1’s subnet) is 2n - 2 were n is the number of subnet bits. This is the number to use when configuring a ip address with the setup dialog.13. [RxNx] What commands will list all protocols that are currently being routed? (Choose all that apply.)a) show ip protocolb) show protocolc) show rund) show starte) All of the aboveAnswerb) show protocolc) show runShow ip protocol will show just the ip routing protocols that are currently configured. Show start may or may not show the current routed protocols.Below is the output of show protocolRouter_B#show protocolGlobal values:Internet Protocol routing is enabledAppletalk routing is enabledBRI0 is administratively down, line protocol is downBRI0:1 is administratively down, line protocol is downBRI0:2 is administratively down, line protocol is downSerial0 is administratively down, line protocol is downSerial1 is administratively down, line protocol is downSerial2 is administratively down, line protocol is downSerial3 is administratively down, line protocol is downTokenRing0 is administratively down, line protocol is down14. [xxNx] Which of the following are true of access lists?a) Access list should have at least one permit statement.b) The last configured line should always be a permit statement.c) Every access-list will implicitly deny all traffic.d) Access-lists are processed top down.e) All of the above.Answere) All of the above.Every access list has an implicit deny all at the end. What would the need be to create a access list with just deny statements. Access-list are processed from the top downtherefore the order of each statement could be critical, for instance suppose you createdan access list and the first line was a permit any and the next line was a deny. Sinceit’s top down processing a packet would be permitted to pass on the first line and the second line would never be executed. An extended list will give you a "match count" thatwill help in determining what the most efficient order should be.15. [xxNx] If the access-group command is configured on an interface and there is noaccess-list created which of the following is most correct?a) An error message will appear.b) The command will be executed and deny all traffic out.c) The command will be executed and permit all traffic out.d) The command will be executed and permit all traffic in and out.e) The command will be executed and deny all traffic in and out.Answerd) The command will be executed and permit all traffic in and out.There are two steps to use an access list .1. Create the list2. Place the access list on a interfaceThe analogy I use in class is:Suppose you reside in a gated community. The community is not protected until you hire the guard and then place him at the gate. If you hire the guard and never place him at the gateall traffic will be permitted.When there is no access list on an interface it is implicit permit anyWhen an access list is placed on a interface it is implicit deny any16. [xxNx] What is the result of the command?" access-list 101 permit tcp any 172.16.0.0 0.0.255.255 established"a) telnet sessions will be permitted regardless of the source addressb) telnet sessions will be denied regardless of the source addressc) telnet sessions will be denied if initiated from any address other than 172.16.0.0networkd) telnet sessions will be permitted to the 172.16.0.0 network onlye) telnet sessions will be denied to the 172.16.0.0 network onlyAnswerc) telnet sessions will be denied if initiated from any address other than 172.16.0.0networkThe secret to this question is the key word "established." Established means that thepacket will be permitted unless it is the first part of the three way handshake. Recallthat when we initiate a TCP connection we have no ACK. How can we acknowledge a sequence number from the other side when we have not established a session with him?17. [xxNx] Which is generally true of the location of access-lists? (Choose all that apply.)a) Standard lists will most likely be placed close to the destination.b) Standard lists will most likely be placed close to the source.c) Extended lists will most likely be placed close to the destination.d) Extended lists will most likely be placed close to the source.e) It does not matter.Answera) Standard lists will most likely be placed close to the destination.d) Extended lists will most likely be placed close to the source.A standard list will only check the source address. It makes no difference where the packet is going. If you place a standard list close to the source you could very well be denying that traffic to go to other destinations. An extended list can be placed close to the source because we can permit or deny traffic based upon the source and destination address. This insures that only traffic we wish to have denied is denied.18. [RxNx] Which of the following is most correct?a) IP is to TCP. as IPX is to SPX.b) RTMP is to Appletalk as IP RIP is to IP.c) NLSP is to IPX as OSPF is to IP.d) a is true.e) b is true.f) a & b are true.g) c is true.h) b & c are true.i) a, b and c are true.Answeri) a, b and c are true.19. [ExNx] If Host A sends a packet to Host B over ethernet and Host B is not active:a) The packet will time out.b) The packet will be removed by Host A.c) The NVRAM of Host B will remove the packet.d) The packet will "die" when it reaches the terminator.e) The packet will be removed by the token monitor.Answerd) The packet will "die" when it reaches the terminator.２０—３９及答案20. [TxNx] If Host A sends a packet to Host B over token ring, and Host B is not active: a) The packet will time out.b) The packet will be removed by Host A.c) The NVRAM of Host B will remove the packet.d) The packet will "die" when it reaches the terminator.e) The packet will be removed by the token monitor.21. [TxNx] If Host A sends a packet to Host B over token ring: Host A dies after transmitting, and Host B is not active:a) The packet will time out.b) The packet will be removed by Host A.c) The NVRAM of Host B will remove the packet.d) The packet will "die" when it reaches the terminator.e) The packet will be removed by the Active monitor.22. [FxNx] BECN and FECN are:a) Used to provide keepalives in a Frame Relay environmentb) Used to provide error checking in a Frame Relay environmentc) Used to provide congestion information in a Frame Relay environmentd) Used to provide flow control parameters in a Frame Relay environmente) BECN and FECN are not used in a Frame Relay environment.23. [RxNx] Which of the following are benefits of a Link-State routing protocol? (Chooseall that apply.)a) Allows the use of a more robust addressing scheme.b) Allows for a larger scalable networkc) Reduces convergence timed) Allows "supernetting"e) All of the above.24. [OxNx] Which of the following are reasons for the OSI model?a) Standardizes interfacesb) Allows modular engineeringc) Facilitates learning and teachingd) All of the above.25. [RxNx] Which of the following is NOT a ROUTING protocol:a) OSPFb) RIPc) IPXd) EIGRPe) NLSP26. [RxNx] Which statement is NOT true about link state protocols:a) Link state advertisements are sent to all routers in an area.b) Each router executes the SPF algorithm.c) Link state routers keep a topological database of the network.d) Link state routers include the originating router s routing table.e) Link state routers know of possible alternate paths to a particular network.27. [RxNx] Which of the following would NOT appear in a routing table?a) Next hop addressb) Interface Port referencesc) MAC addressd) Network addresse) Metrics28. [OxNx] Which statement is true of the Datalink OSI layer ?a) 802.3 is the MAC sub layer.b) No such thingc) MAC sublayer provides the connection to the network layer.d) MAC sublayer uses SAPS to access the network layer.e) SAP sublayer uses the MAC layer to access the LAN medium.29. [RINx] Given the IP address of 193.243.12.43 and a subnet mask of 255.255.255.128, what is the subnet address?a) 194.243.12.32b) 193.243.0.0c) 194.243.12.43d) 193.243.12.128e) None of the above.30. [CxNx] Cisco uses a naming convention to identify frame types. Which four of the following mappings are correct?Cisco_name = Common_namea) cisco_II = Ethernet_IIb) arpa = Ethernet_IIc) sap = Ethernet_802.3d) sap = Ethernet_802.2 LLCe) Novell Ether = Ethernet_802.2 LLCf) cisco_802 = Ethernet_802.2 LLCg) snap = Token Ring Snaph) snap = Ethernet_SNAP31. [RxNx] In order to communicate throughout an internetwork, which of the following are required. Choose Two.a) The use of a routable protocol such as NetBEUI or LATb) A hierarchical naming scheme server such as DNSc) A host file at each communicating deviced) A two part network addressing scheme such as Network/Hoste) The use of a routable protocol such as IP or IPXf) The use of a routable protocol such as TCP or IPX32. [CxNx] What is the default route on an IP network? Choose one.a) This is the route that will be chosen first by IP for delivery of a datagram.b) The address of the nearest downstream neighbor in a Token ring network.c) At the router, it is the route used to direct frames for which the next hop has not been explicitly listed in the routing table.d) Any static route listing in a routing table.e) When all conditions are equal, the best route for delivery of IP datagrams.33. [CxNx] A caret symbol (^) inserted into a failed command indicates which of the following. Choose one.a) Numeric data is required for this command.b) The point in a command where you can simply press return to complete the syntax string.c) The point in a command where you have entered an incorrect command, keyword or argument.d) The point in a command where you must enter a required value.e) This is a normal indicator for any failed command.34. [RXNx] The metric used by IPX RIP is:a) hopsb) ticksc) costd) ticks and hopse) None of the above.35. [xINx] Which one of the following masks has the nickname of the "serial mask"?a) 255.255.255.192b) 255.255.255.224c) 255.255.255.240d) 255.255.255.248e) 255.255.255.252。

ispn考试试题

ispn考试试题ISPN考试试题ISPN（International Standardized Psychological Testing and Assessment)考试是一种国际标准化心理测量和评估考试。

它被广泛应用于各种领域，如教育、医学、人力资源管理等。

ISPN考试试题涵盖了多个方面的知识和技能，旨在评估个体的心理状态、能力和潜力。

本文将探讨ISPN考试试题的特点和应对策略。

首先，ISPN考试试题涉及的内容十分广泛。

它包括心理学的各个领域，如认知心理学、社会心理学、发展心理学等。

试题可能涉及到记忆、思维、情绪、人际关系等方面的知识。

因此，考生需要对心理学的各个方面有一定的了解和掌握。

在备考过程中，可以通过阅读相关教材和资料，参加培训班或自学课程，来提高自己的知识水平。

其次，ISPN考试试题的形式多样。

它既包括选择题，也包括主观题。

选择题可能涉及到定义、解释、案例分析等。

主观题可能要求考生进行论述、分析或解决问题。

因此，考生需要具备一定的逻辑思维和表达能力。

在备考过程中，可以通过做模拟试题，进行刷题训练，来提高自己的答题技巧和速度。

此外，ISPN考试试题注重应用能力的考察。

它不仅要求考生具备理论知识，还要求考生能够将理论知识应用于实际情境中。

试题可能涉及到实际案例、场景模拟等。

因此，考生需要培养自己的实际操作能力和解决问题的能力。

在备考过程中，可以通过实践、实习或参与相关项目来提高自己的应用能力。

另外，ISPN考试试题还注重考察考生的判断和决策能力。

试题可能涉及到道德伦理、职业道德等方面的问题。

考生需要能够在复杂的情境中进行判断和决策，并给出合理的理由。

在备考过程中，可以通过参与讨论、思考伦理问题等方式来提高自己的判断和决策能力。

最后，应对ISPN考试试题需要考生具备良好的心理素质。

考试可能会给考生带来一定的压力和紧张感。

因此，考生需要具备应对压力和调节情绪的能力。

在备考过程中，可以通过运动、放松训练、心理咨询等方式来提高自己的心理素质。

ISPN考试模拟试题(十)

ISPN考试模拟试题（十）Practice Test Questions28. Which of these discharge instructions should the nurse give to a teenage girl who has anorexia nervosa?A. Join a coeducational social clubB. Enroll in a cooking classC. Maintain a daily calorie countD. Attend a support group29. A patient who has had a cerebrovascular accident has right-sided hemiplegia and dysphagia. Which of these measures should the nurse incorporate into the patient’s feeding care plan?A. Give the patient liquid pureed foods through a syringe placed in the left side of the mouthB. Position the patient on the right side with the head of the bed elevated to 45 degrees during feedingsC. Stand on the patient’s right side when feedingD. Place the food in the left side of the patient’s mouth30. Isotretinoin (Accutane) is prescribed as a treatment for a 15-year-old female who has acne. Which of these statements is essential for a nurse to make to the adolescent?A. “You must refrain from any strenuous activities while taking this drug to avoid developing hypertension.”B. “If you become pregnant while taking this drug, the baby is at high risk for developing birth defects.”C. “The drug cannot be taken for more than 12 consecutive months to prevent long-term adverse effects.”D. “You m ust return to the clinic weekly to have blood drawn to monitor kidney function.Rationales28. Key:D Client Need: Psychosocial IntegrityD. Patients and families can meet to share what they have been experiencing, which helps all members to cope.A. Patients respond better to family therapy, psychotherapy and support groups.B. Patients with anorexia nervosa often enjoy reading about food preparation and preparing food but do not eat the food.C. The focus should be on overall propernutrition.29. Key:D Client Need: Basic Care and ComfortD. The patient has right-sided paralysis. The patient’s left side is not paralyzed and he is able to chew on that side.A. The patient should not be fed using asyringe. This increases the possibility of aspiration.B. There is an increased risk for aspiration since the patient has right-sided paralysis.C. Position of the nurse is not relevant to food placement.30. Key:B Client Need: Pharmacological and Parenteral TherapiesB. Maternal use of Accutane has been known tocause severe birth defects. A. Hypertension is not a side effect of Accutane.C. Treatment is usually given for 4 to 5 months.If a second course of therapy is needed, it should not be initiated until at least 8 weeks after completion of the first course. Experience has shown that clients may continue to improve while off Accutane.D. Weekly blood tests are not required.。

通信网络模拟考试题(附参考答案)

通信网络模拟考试题（附参考答案）一、单选题（共53题，每题1分，共53分）1.下列采用SPF算法的协议是（）A、BGPB、EIGRPC、ISISD、RIPv2正确答案：C2.激光器的寿命告警是在阈值电流上升到初始值的（）时产生A、50%B、100%C、150%正确答案：C3.交换机的端口有多种类型，下面关于Trunk端口说法正确的是（）A、Trunk端口主要用于连接主机B、Trunk端口可以自由设定允许通过多个VLAN ID，这些旧可以与PVID相同，也可以不同C、Trunk口收到的报文中所带的VLAN不在允许通过的VLAN列表中，此报文会在VLAN内广播D、Trunk端口不能设置PVID正确答案：B4.TMS中根据资源命名及定义标准，通常同一个站点的机房如何编号（）A、从R01开始递增B、从B01开始递增C、从H01开始递增D、从D01开始递增正确答案：C5.SDH设备和系统的光接口是由ITU-T的（）建议规范的B、G.826C、G.957D、G.708正确答案：D6.SDH网元级网管系统不能完成的项目是（）A、管理不同的子网B、配置交叉连接数据C、收集告警D、产生告警正确答案：A7.基于MPLS标签最多可以标示出几类服务等级不同的数据流（）A、8B、256C、2D、64正确答案：A8.TMS系统中关于检修管理说法正确的是（）A、值班工作台的“运行记录”只能由告警转运行、新建产生B、运行管理中没有和实时监视、资源管理的功能交互，是一个独立的功能模块C、检修类别分为临时、计划两种D、检修单流程可以根据网省自己的使用情况进行增减调整正确答案：C9.简单定位系统故障的方法，按优先级从先到后顺序是（）：1)、使用网管进行故障定位2)、单站自环测试3)、逐段环回方法，注意单双向业务4)、替换单板方法A、1 2 3 4B、3 2 4 1C、4 1 2 3正确答案：A10.从业务申请单中可拆分出（）A、缺陷单B、方式单C、检修单D、工作票正确答案：B11.变电站和备用发电机组构成的交流供电系统一般都采用（）A、交流供电方式B、集中供电方式C、分散供电方式D、混合供电方式正确答案：B12.TD-LTE传输速率可以达到（）A、下行100MB、下行14MC、下行384KD、下行2M正确答案：A13.以下设备中，（）主要用于连接几个不同的网段，实现较远距离的无线数据通信A、无线路由器B、无线网关C、无线网卡D、无线网桥正确答案：D14.当电力系统发生故障时，要求继电保护动作，将靠近故障设备的断路器跳开，以缩小停电范围，这就是继电保护的（）A、可靠性B、选择性C、快速性D、灵敏性正确答案：B15.（）是指在电压允许偏差范围内，电网供电电压的调整使电网高峰负荷时的电压高于低谷负荷时的电压值，使用户的电压高峰、低谷相对稳定A、恒调压方式B、逆调压方式C、顺调压方式正确答案：B16.（）开销用于支持光通道的维护和运行A、OTUk开销B、ODUk开销C、OPUk开销D、OCh开销正确答案：B17.单向通道保护环的触发条件是（）告警A、MS-AISB、MS-RDIC、LOSD、TU-AIS正确答案：D18.在TMS系统中，用户所属单位必须与（）保持一致时才能在告警操作台上对告警进行操作A、统计单位B、维护单位C、权限管辖单位D、隶属单位正确答案：C19.ADSS光缆是指（）A、普通光缆B、全介质自承式光缆C、悬挂于地线上的光缆D、特种光缆正确答案：B20.在机房环境检查时，关于机房供电条件检查下面哪项说法是错误的（）A、交流电供电满足通信电源的交流电压及其波动范围要求和传输设备功率要求B、直流配电设备满足要求，供电电压满足设备直流电源电压指标C、有足够容量的蓄电池，保证在供电事故发生时，传输设备能继续运行D、当交流电供电设施齐全时，可不提供备用电源正确答案：D21.当被叫振铃时，后向局应向前向局发送（）信号A、ACMB、IAMC、ANMD、SAM正确答案：A22.ROADM所能控制的波长范围，与DWDM系统所用的波段适配，其工作范围为（）A、1565nm~1625nmB、1530nm~1565nmC、1310 nm~1510 nmD、1527nm~1568nm正确答案：D23.电网运行的客观规律包括（）A、瞬时性、快速性、电网事故发生突然性B、变化性、快速性、电网事故发生突然性C、异步性、变化性、电网事故发生突然性D、同时性、平衡性、电网事故发生突然性正确答案：D24.在一条2B+D基本速率用户线上，最多允许几个终端同时工作A、三个B、五个C、一个D、六个正确答案：A25.MPLS-VPN网络中，作为P设备，那么一定需要支持的功能是（）A、M-BGPB、LDPC、OSPFD、BGPv4正确答案：B26.Martini方式中，分配VC标签的协议是（）A、LDPB、MP-BGPC、RSVPD、手工配置正确答案：A27.如果Ethernet交换机一个端口的数据传输速度是100Mbps，该端口支持全双工通信，那么这个端口的实际数据传输速率可以达到（）A、400MbpsB、200MbpsC、50MbpsD、100Mbps正确答案：B28.关于检修票流程，以下说法错误的是（）A、下级单位可以发起上级单位设备的检修流程B、省公司影响总部业务的检修票，不影响分部，可以直接送国网信通审批C、检修票在开工阶段可以撤销，终止流程D、检修票可以没有影响业务正确答案：B29.以下内容（）是路由信息中所不包含的A、源地址B、路由权值C、目标网络D、下一跳正确答案：A30.IMS中内部功能分为：（）、媒体网关控制、出口网关控制、媒体资源处理、归属用户服务A、语音功能B、信令功能C、存储功能D、呼叫会话控制正确答案：D31.阀控式蓄电池额定容量规定的环境温度为（）A、35℃B、15℃C、25℃D、30℃正确答案：C32.SDH设备中2048Kb/s电接口，接口码型（）A、HDB3B、NRZC、AMID、CMI正确答案：A33.不属于PDH信号进入SDH帧结构中的映射方式是（）A、异步映射B、字节同步映射C、比特同步映射D、同步映射正确答案：D34.使用OTDR测试光纤长度时，当设置折射率小于光纤实际折射率时，测定的长度（）实际光纤长度A、小于B、大于C、小于等于D、大于等于正确答案：B35.以太网最大传输单元MTU缺省值（）A、1500B、1600C、1492D、1512正确答案：A36.IMS功能实体中，（）功能实体的作用是用户和业务信息的数据库，用于存储一个域内所有用户的相关数据A、CSCFB、ASC、MRFD、HSS正确答案：D37.SDXC设备时钟自由振荡时的最大频偏不得超过（）A、±3.5ppmB、±4.6ppmC、±5.6ppmD、±7.5ppm正确答案：B38.中继器工作于ＯＳＩ参考模型的哪一层（）A、传输层B、物理层C、网络层D、数据链路层正确答案：B39.测量光缆金属护层对地绝缘性能的好坏，一般采用的仪表是（）A、直流电桥B、万用表C、高阻计（即光缆金属护层对地绝缘测试仪）D、耐压表正确答案：C40.在OTN中，下面哪个维护信号是从下游站点传往上游站点（）A、AISB、LCKC、IAED、BDI正确答案：D41.波分系统常用的PMD补偿方式不包括（）A、电域补偿B、光域补偿C、光电混合补偿D、放大补偿正确答案：D42.各种业务信号复用成STM-N的步骤是（）A、映射定位复用B、定位复用映射C、定位映射复用D、复用映射定位正确答案：A43.软交换与IAD之间通过何种方式相联（）A、E1中继线B、双绞线C、5类线D、IP网络相联，不一定有直接相联的物理链路正确答案：D44.以下不属于无线接人技术的是（）A、WLLB、LMDSC、DBSD、PON正确答案：D45.OTN标准的四层复用结构中，光数据单元ODU1的速率接近（）A、GEB、2.5GC、5GD、10G正确答案：B46.用户电路、用户集线器、数字交换网络及中继电路等属于程控数字交换机的（）A、话路系统B、控制系统C、输入输出系统D、选组级正确答案：A47.在TMS系统缺陷单的流转过程中，（）功能会使其变为私有化的操作A、签收工作B、操作C、保存D、追回正确答案：A48.电力网按电压等级的高低，可分为（）A、低压和高压；B、低压、中压、高压和超高压、特高压C、低压、高压和超高压D、低压、中压、高压正确答案：B49.OTN网络定义映射和结构的标准协议是（）A、G.693B、G.709C、G.981D、G.655正确答案：B50.光纤熔接时，根据自动熔接机上显示的熔接损耗值判断光纤熔接质量，熔接损耗应小于（），不合格应重新熔接A、0.5dBB、0.2dBC、0.1dBD、0.05 dB正确答案：D51.根据STM-N帧速率，可知低阶通道开销字节V5的速率是（）A、32kbit/sB、16kbit/sC、8kbit/sD、64kbit/s正确答案：A52.对于1：N的复用段保护，是通过STM-N信号复用段开销中的（）字节的通信完成自动保护倒换（ASP）A、K1B、K2C、K3D、K1、K2正确答案：D53.DWDM一般建议采用（）光纤A、G.652B、G.653C、G.654D、G.655正确答案：D二、多选题（共25题，每题1分，共25分）1.PTN工程开通初验时，一般要用Smartbits测试以太网业务指标，常测指标为（）A、时延B、背靠背C、丢包率D、吞吐量正确答案：ABCD2.IEEE802.2标准中LLC协议的基本功能有以下几项（）A、帧的地址编码B、以帧为单位的信息传输C、帧的顺序编码D、通过重发对有差错的帧实现差错控制正确答案：BCD3.（）技术属于P2MP技术A、EPONB、GPONC、SDH/MSTPD、P2P Ethernet正确答案：AB4.关于时钟保护配置的原则说法正确的是（）A、无时钟保护协议时，时钟网只能配置成单向，且不能成环B、启动标准SSM协议时，时钟可以配置成双向，但不能配置成环。

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Practice Test Questions
25. When changing a patient’s abdominal dressing, a nurse observes that the wound is dehisced and a small portion of the bowel is eviscerated. Which of these actions should the nurse take first?
A. Apply a sterile saline dressing over the wound
B. Place a pressure dressing over the wound
C. Report the findings to the primary care provider
D. Irrigate the wound with diluted hydrogen peroxide
26. Which of the following orders should a nurse question for a client who is scheduled for surgery?
A. Demerol (meperidine) 200 mg IM
B. Atropine sulfate 0.4 mg IM
C. Valium (diazepam) 2 mg IM
D. Phenergan (promethazine) 25 mg IM
27. A mother brings her 2-week-old infant to the clinic for a
well-child visit. The nurse notes that the infant’s weight is 10% less than the birthweight. To accurately interpret this information, the nurse should take which of these actions?
A. Weigh the baby on another scale
B. Obtain a history of the baby’s feeding pattern since birth
C. Ask the mother how many bowel movements the baby has each day
D. Measure the baby’s abdominal girth
Rationales
25. Key: A Client Need: Management of Care
A. The wound should be covered and kept moist.
B. Pressure should not be placed on an eviscerated bowel.
C. Finding should be reported after covering the wound and checking the patient’s vital signs.
D. Wound should be covered with a saline dressing. Hydrogen peroxide is too caustic for irrigating fluid.
26. Key: A Client Need: Safety and Infection Control
A. The dosage of Demerol is high. The normal range is 50–150 mg. This order should be questioned.
B, C & D.
Valium and Phenergan are both appropriate for preoperative sedation. Atropine is appropriate for preoperative decrease
in secretions. The dose listed is appropriate.
27. Key: B Client Need: Health Promotion and Maintenance
B. Feeding pattern will provide information about weight loss/gain ininfants.
A. Using another scale will not help to accurately interpret results.
C. Record of bowel movements is not the most important aspect ofassessment.
D. Measurement of abdominal girth will not give information about weight loss.。