思科 第二学期 答案 14章
国开行政组织学第14章测试试题及答案
试题14
根据现代心理学和行为科学的研究，组织变革阻力产生的原因为：_______________。
正确答案是：心理上的抵制, 经济原因引起的抵制, 组织本身的阻力, 社会的原因
三、名词解释
试题15
组织变革
组织变革是指组织系统为了适应内外环境的发展与变化，对组织系统的结构与功能进行调整，改变旧的管理模式，建立新的组织管理形态，以维系组织的生存和发展，并借此提高组织效能的一个过程或行为。
试题18
简析组织的内部变革的征兆。
答案：
（1）决策的形成过于缓慢，以致无法把握良好的机会，或者时常造成错误的决策；（2）沟通不良；（3）组织的机能不能得到正常发挥，效率低下；（4）缺乏创新精神，开发不出新产品，无法开拓新市场，组织发展处于停滞状态。
试题19
简述李皮特的“有计划的变革模式”。
答案：
李皮特、瓦特森、威斯特于1958年提出的一种组织变革的模式。此模式将组织变革的过程划分为七个阶段：（1）变革需要的产生；（2）关系的确立；（3）问题诊断；（4）目标和计划的建立；（5）行动；（6）变革的普及与稳进；（7）终结关系。
正确答案是：利维特
试题5
美国心理学家埃德加·薛恩在其《组织心理学》一书中提出了_______________。
正确答案是：适应性变革循环模式
试题6
罗宾·斯特克兹认为，组织变革的方式取决于组织成员的技术能力和人际关系能力的组合，提出了_______________。
正确答案是：情境变革模式
二、多项选择题（每题有两个和两个以上正确答案）
试题23
试论组织变革的阻力及其消除。
答案：
组织变革的阻力：（1）心理上的抵制；（2）因经济原因引起的抵制；（3）组织本身的阻力；（4）社会的原因。
思科第二学期期末试题及答案
Close WindowAssessment System 1. Assessment Selection 2. Assessment Settings 3. Take Assessment 1Refer to the exhibit. Which summarization should R1 use to advertise its networks to R2? 192.168.1.0/24 192.168.0.0/24 192.168.0.0/22 192.168.1.0/22 2If a router is booting with its default configuration register setting and its NVRAM lacks boot system commands, from try to load the IOS image first? ROM RAM NVRAM f lash flash TFTP server 3Refer to the exhibit. A network administrator adds this command to router R1: ip route 192.168.2.0 255.255.255.0 S0/0/0. result of adding this command? This route is automatically propagated throughout the network. The traffic for network 172.16.1.0 is forwarded to network 192.168.2.0. A static route is established. A static route is established. The traffic for all Class C networks is forwarded to 172.16.1.2. 4Which two technologies can be used in distance vector routing protocols to prevent routing loops? (Choose two.) authentication link-state advertisements h old-down timers hold-down timers Spanning Tree Protocol split horizon 5Refer to the exhibit. What information can be determined from the displayed output? E IGRP packets are waiting to be sent to the neighbors. EIGRP packets are waiting to be sent to the neighbors. The adjacencies between the routers are yet to be established. The IP address 192.168.10.10 is configured at serial interface S0/0/1 of router R2. Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10 via the R2 S0/0/1 interf6Which statement is true about the metrics used by routing protocols? A metric is a value used by a particular routing protocol to compare paths to remote networks. A metric is a value used by a particular routing protocol to compare paths to remote networks. A common metric is used by all routing protocols. The metric with the highest value is installed in the routing table. The router may use only one parameter at a time to calculate the metric. 7Which feature of RIPv2 enables it to function as a classless routing protocol? Subnet masks are included in routing updates. Routing updates are triggered by topology changes. Next-hop addresses are included in routing updates. N ext-hop addresses are included in routing updates. Multicast addresses are used to send routing updates. 8Refer to the exhibit. The hosts on the R1 LAN are unable to access the Internet. What is incorrectly configured? the IP address of the Fa0/0 interface at R1 t he IP address of the Fa0/0 interface at R1 the IP address of the S0/0/1 interface at R2 the IP address of the S0/0/0 interface at R1 the subnet mask of the S0/0/1 interface at R2 9Which prompt is used to allow a user to change the IP address of an interface on a router? Router> R outer> Router# Router(config)# Router(config-if)# 10Refer to the exhibit. The interfaces of all routers are configured for OSPF area 0. R3 can ping R1, but the two routeestablish a neighbor adjacency. What should the network administrator do to troubleshoot this problem? Check if the interfaces of the routers are enabled. Check the hello and dead intervals between the routers. C heck the hello and dead intervals between the routers. Check the process ID of both routers. Check if CDP is enabled on all the routers. 11Refer to the exhibit. Which combination of IP address and subnet mask can be used on the serial interface of Route interface in the same network as the serial interface of Router1? IP 172.16.0.18, subnet mask 255.255.255.0 IP 172.16.32.15, subnet mask 255.255.255.240 I P 172.16.32.15, subnet mask 255.255.255.240 IP 172.16.0.18, subnet mask 255.255.255.252 IP 172.16.32.18, subnet mask 255.255.255.252 12Refer to the exhibit. A network engineer has run the show version command on R3. Upon rebooting, R3 does not load configuration settings. What could be the cause of this problem? There is insufficient NVRAM. There is insufficient flash memory. The configuration register is not configured with the default setting. The system image file is not located in NVRAM. 13Refer to the exhibit. On the basis of the show running-config output, which option correctly reflects the routes that will b routing table? 14Refer to the exhibit. Host A is having problems accessing server A. All routers have the same EIGRP configuration a What should be done so that host A can access server A? Add the command n ono auto-summary on all routers. Change the network statements to include a wildcard mask. Adjust the EIGRP hello timers to account for the network delay. Add the command e igrpeigrp log-neighbor-changes on all routers. 15Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes down. Which statement is the routers in this topology will respond to this event? Router4 will learn about the failed route 30 seconds later in the next periodic update. Split horizon will prevent Router4 from fowarding packets to the 10.0.0.0 network until the holddown timer expire Router5 immediately flushes the unreachable route from its routing table. Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0. 16A network administrator is in charge of two separate networks that share a single building. What device will be require networks and add a common connection to the Internet that can be shared? hub router access point Ethernet switch E thernet switch 17Refer to the exhibit. A network administrator has configured OSPF using the following command: network 192.168.1.32 0.0.0.31 area 0Which router interface will participate in OSPF? FastEthernet0/0 FastEthernet0/1 Serial0/0/0 Serial0/0/1 18Refer to the exhibit. R1 is configured properly for a single area OSPF, and R2 has been recently installed in the netcommands is required to configure a single area OSPF for the networks that are connected to R2? R2(config)# router ospf 1R2(config-router)# network 192.168.2.0 0.0.0.255 area 0R2(config-router)# network 10.1.1.0 0.0.0.3 area 0R2(config)# router ospf 1R2(config-router)# network 192.168.2.0 0.0.0.255 area 0R2(config)# router ospf 2R2(config-router)# network 10.1.1.0 0.0.0.3 area 0R2(config)# router ospf 1R2(config-router)# network 192.168.2.0 0.0.0.255 area 0R2(config-router)# network 10.1.1.0 0.0.0.3 area 1R2(config)# router ospf 1R2(config-router)# network 192.168.2.0 0.0.0.255 area 0R2(config-router)# network 10.0.0.0 0.0.0.3 area 119Which two statements are true for link-state routing protocols? (Choose two.) Routers that run a link-state protocol can establish a complete topology of the network. Routers in a multipoint network that run a link-state protocol can exchange routing tables. Routers use only hop count for routing decisions. The shortest path first algorithm is used. Split horizon is used to avoid routing loops. 20Which candidate route has the longest match for a packet with a destination address of 10.30.16.48? 10.30.0.0/16 10.30.15.0/23 10.30.16.0/24 10.30.16.32/27 10.30.16.32/30 21Which statement is true about the RIPv1 protocol? It is a link-state routing protocol. It excludes subnet information from the routing updates. It uses the DUAL algorithm to insert backup routes into the topology table. It uses classless routing as the default method on the router. 22Which of the following are primary functions of a router? (Choose two.) packet switching microsegmentation domain name resolution path selection flow control 23Refer to the exhibit. Partial results of the show running-config and s how show ip route commands are displayed. Router B rec with a destination address of 10.16.1.97. What will router B do? drop the packet forward the packet via the route to 10.16.1.0 f orward the packet via the route to 10.16.1.64 forward the packet via the route to 10.16.1.64 use the default route 24 What are two ways that a router can learn of the paths to destination networks? (Choose two.) updates from other routers DHCP information broadcasts m anual configuration of routes manual configuration of routes ARP requests from connected routers inspection of the destination IP address in data packets updates from the SMTP management information base 25Refer to the exhibit. Host A is unable to access the Internet. What is the reason for this? The IP address of host A is incorrect. The default gateway of host A is incorrect. The Fa0/1 interfaces of the two routers are configured for different subnets. T he Fa0/1 interfaces of the two routers are configured for different subnets. The subnet mask for the Fa0/0 interface of R1 is incorrect. 26A network administrator is analyzing routing update behavior on a network that has both EIGRP and OSPF configured protocols appear in the output of show ip protocols. However, only EIGRP internal routes appear in the routing tables. correctly explains the scenario? The OSPF protocol has a higher cost than EIGRP. T he OSPF protocol has a higher cost than EIGRPThe EIGRP protocol has a lower metric than OSPF. The EIGRP protocol was configured first on the router. The EIGRP protocol has a lower administrative distance than OSPF. 27Refer to the exhibit. The network has three connected routers: R1, R2, and R3. The routes of all three routers are d are operational and pings are not blocked on this network. Which ping will fail? from R1 to 172.16.1.1 from R1 to 192.168.3.1 from R2 to 192.168.1.1 from R2 to 192.168.3.1 28Refer to the exhibit. A device is required to complete the connection between router R1 and the WAN. Which two de this? (Choose two.) a CSU/DSU device a modem a n Ethernet switch an Ethernet switch a hub a bridge 29 In which situation would a default static route be recommended? when connecting an edge router to the Internet w hen variable length subnet masking is in effect when variable length subnet masking is in effect when there is more than one valid route for a destination network when a destination network has a larger mask than any routes in the routing table 30 Two routers need to be configured within a single OSPF area. Which two components need to be configured on boththis? (Choose two.) t he same process ID the same process ID the same area ID network addresses and wildcard masks the same router ID the same loop back address 231Refer to the exhibit. What is the meaning of the highlighted value 120? It is the metric that is calculated by the routing protocol. It is the value that is used by the DUAL algorithm to determine the bandwidth for the link. It is the administrative distance of the routing protocol. It is the hold-down time, measured in seconds, before the next update. 32Refer to the exhibit. A router learns a route to the 192.168.6.0 network, as shown in the output of the show ip rip database However, upon running the show ip route command, the network administrator sees that the router has installed a diff command, the network administrator sees that the router has installed a diffe 192.168.6.0 network learned via EIGRP. What could be the reason for the missing RIP route? Compared to RIP, EIGRP has a lower administrative distance. Compared to EIGRP , RIP has a higher metric value for the route. Compared to RIP , the EIGRP route has fewer hops. Compared to RIP , EIGRP has a faster update timer. 33 Which mechanism helps to avoid routing loops by advertising a metric of infinity? route poisoning split horizon hold-down timer triggered updates 34 A network administrator must use the subnet 172.16.128.0/18 to create 6 additional subnets each containing up to 20LANs. Which subnet mask should the administrator use to create the new subnets? 255.255.224.0 255.255.240.0 255.255.248.0 255.255.252.0 35 A technician configures the Fa0/0 interface on a router with ip address 192.168.3.5 255.255.255.252. What additional com. What additional com issued by the technician to activate the interface to forward traffic? Router(config-if)# exitRouter(config-if)# no shutdownRouter(config-if)# clock rateRouter# copy running-config startup-config36 Because of a topology change, the next hop IP address in the current static route must be reconfigured. How can a altered to accommodate a topology change? Keep the existing static route and configure a new static route with the correct next hop IP address. Negate the existing static route and configure a new static route with the correct next hop IP address. D o nothing. The existing static route will automatically update the next hop entry with the new IP address. Do nothing. The existing static route will automatically update the next hop entry with the new IP address. Keep the existing static route, reload the router, and configure a new static route with the correct next hop IP a37Refer to the exhibit. What needs to be done to allow these two routers to connect successfully? Add a clock rate to S0/0/0 on R1. Add an interface description to S0/0/1 on R2. C hange the serial interface on R2 to S0/0/0 so that it matches R1. Change the serial interface on R2 to S0/0/0 so that it matches R1. Change the IP address of S0/0/1 on R2 so that it is in the same subnet as R1. 38Refer to the exhibit. The network administrator has run the following command on R1. R1(config)# ip route 192.168.2.0 255.255.255.0 172.16.1.2What is the result of running this command? Traffic for network 192.168.2.0 is forwarded to 172.16.1.2. This route is automatically propagated throughout the entire network. Traffic for all networks is forwarded to 172.16.1.2. The command invokes a dynamic routing protocol for 192.168.2.0. 39 Why is fast convergence desirable in networks that use dynamic routing protocols? Hosts are unable to access their gateway until the network is converged. Routers will not allow packets to be forwarded until the network is converged. Routers may make incorrect forwarding decisions until the network has converged. Routers will not allow configuration changes to be made until the network has converged. 40Refer to the exhibit. When all of the commands that are shown in the exhibit are entered at the correct router promp the router? name cisco router hostname 41Refer to the exhibit. Packets destined to which two networks will require the router to perform a recursive lookup? (C10.0.0.0/8 64.100.0.0/16 128.107.0.0/16 172.16.40.0/24 192.168.1.0/24 192.168.2.0/24 42Refer to the exhibit. A router interface is configured with the command ip address 172.16.3.31 255.255.192.0. Which set o. Which set o values would allow a computer that is connected to the router interface to communicate with remote networks? A: 172.16.3.254 A: 172.16.3.254 B: 255.255.192.0 C: 172.16.3.31 A: 172.16.3.31 B: 255.255.192.0 C: 172.16.3.255 A: 172.16.3.254 B: 255.255.255.0 C: 172.16.3.31 A: 172.16.3.31 B: 255.255.255.0 C: 172.16.3.1 43Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through three.) The router modifies the TTL field, decrementing it by one. The router changes the source IP to the IP of the exit interface. The router maintains the same source and destination IP. The router changes the source physical address to the physical address of the exit interface. The router changes the destination IP to the IP of the exit interface. The router sends the packet out all other interfaces, besides the one it entered the router on. 44Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose three.) The route to network 172.16.0.0 has an AD of 156160. Network 192.168.0.16 can best be reached using FastEthernet0/0. The AD of EIGRP routes has been manually changed to a value other than the default value. Router1 is running both the EIGRP and OSPF routing process. Network 172.17.0.0 can only be reached using a default route. No default route has been configured. N o default route has been configured. 45Refer to the exhibit. Which route will be installed in the routing table on R1 to forward traffic from PC1 to the web s the static route the route learned via OSPF the route learned via EIGRP both routes learned via OSPF and EIGRP 46Refer to the exhibit. Based on the partial output in the exhibit, why can users establish a console connection to this r a password? The login command was not entered on the console line. The enable password should be an enable secret password. No username and password combination has been configured. Console connections cannot be configured to require users to provide passwords. 47Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network? ADC ABC It will load balance the traffic between ADC and ABC It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails. 48A router learns about network 192.168.10.128/27 from multiple sources. Which option represents the best route and w routing table? S 192.168.10.128/27 [1/0] via 192.168.10.226 R 192.168.10.128/27 [120/2] via 192.168.10.226, 00:00:14, Serial0/0/0 O 192.168.10.128/27 [110/1563] via 192.168.10.226, 00:00:09, Serial0/0/0 D 192.168.10.128/27 [90/21026560] via 192.168.10.226, 00:00:16, Serial0/0/0 49Refer to the exhibit. R1 and R2 are adjacent routers both running RIP. All interfaces on both routers are correctly cothe routing table. What is the likely cause? The adjacent interfaces are passive. The distance of 120 exceeds 15 hops. R2 will not accept version 1 updates from R1. Routes are being summarized by R1 but not by R2. 50It is saved in the topology table for use if the primary route fails. It may be backed up by a feasible successor route. It is used by EIGRP to forward traffic to the destination. It is flagged as active in the routing table. After the discovery process has occurred, the successor route is stored in the neighbor table. 51Refer to the exhibit. PC1 is unable to access the Internet. What is the cause of the problem? An incorrect IP address is configured between the two routers. No static route is configured on Router2. A routing loop has occurred. No routing protocol is configured on either of the two routers. 52Refer to the exhibit. A technician has configured the interfaces on the Router, but upon inspection discovers that inte FastEthernet0/1 is not functioning. Which action will most likely correct the problem with FastEthernet0/1? A clock rate should be added to the interface configuration. The subnet mask should be added to the interface configuration. An interface description needs to be added to the interface configuration. The no shutdown command needs to be added to the interface configuration. 。
思科练习题答案
思科练习题答案在本文中，我将为您提供思科练习题的答案。
这些答案旨在帮助您更好地理解和应用思科网络技术。
请一起来看看吧！第一题问题：什么是子网掩码？它的作用是什么？答案：子网掩码是一个32位长的二进制数字，用于确定一个IP地址中哪些位用于网络地址，以及哪些位用于主机地址。
它的作用是帮助划分IP地址，将一个大网络划分为多个小网络，以提高网络的安全性和效率。
第二题问题：请解释什么是VLAN？答案：VLAN（Virtual Local Area Network）是一种将网络设备按逻辑上的需求进行逻辑划分的技术。
通过VLAN，可以将不同的设备划分到不同的虚拟网络中，实现逻辑上的隔离和管理。
这样可以提高网络的可管理性和安全性。
第三题问题：请列举一些常见的网络设备。
答案：常见的网络设备包括路由器、交换机、网关、防火墙等。
路由器用于在不同网络之间进行数据转发和路由选择；交换机用于在局域网中转发数据包；网关用于连接不同类型的网络；防火墙用于保护网络免受恶意攻击。
第四题问题：请解释什么是IP地址？IP地址的分类有哪些？答案：IP地址（Internet Protocol Address）是互联网中用于标识设备的地址。
它由32位的二进制数字组成，通常表示为四个十进制数，每个数的取值范围为0-255。
IP地址的分类主要有A类、B类、C类、D类和E类。
其中，A类地址用于大型网络，B类地址用于中型网络，C类地址用于小型网络，D类地址用于多播，E类地址为保留地址。
第五题问题：请解释什么是动态主机配置协议（DHCP）？答案：动态主机配置协议（DHCP）是一种网络协议，用于自动分配IP地址给网络上的设备。
通过DHCP，设备可以在加入网络时自动获取一个可用的IP地址、子网掩码、网关等网络配置信息，从而实现网络的自动化配置和管理。
总结：通过本文，我们回答了几个与思科网络技术相关的练习题。
我们了解了子网掩码的作用，学习了VLAN的概念，认识到了常见的网络设备，了解了IP地址的分类以及动态主机配置协议（DHCP）的工作原理。
思科CCNA考证习题答案
1. what could be possible causes for the "Serial0/0 is down"interface status? 这可能是为“Serial0 / 0的可能原因是向下”接口的状态？TWOA.a layer 1 problem exists.1层存在问题D.an incorrect cable is being used。
2.before installing a new,upgraded version of the ios,what should be checked on the router,and which command should be used to gather this information?在安装一个新的，升级的IOS版本，应该怎样检查路由器上，并命令应该被用来收集这些资料？B.the amount of avaiable flash and ram 缴费的闪存和RAM的数量D.show version 显示版本3.refer to the exhibit. which two statements are true about inter VLAN routing in the topology that is shown in the exhibit?（choose two）指展览。
这两个语句是对国际米兰的是在展会上展出的拓扑路由的VLAN是否属实？D. the FastEthernet 0/0 inerface on router1 must be configured with subinterfaces.关于路由器1的在FastEthernet 0/0 inerface 必须配置子接口F.the FastEthernet 0/0 interface on router1 and switch2 trunk ports must be configured using the same encapsulation type. 对在FastEthernet 0/0 接口上路由器1和交换器2中继端口必须配置使用相同的封装类型。
思科ITE章考试原题及答案图文稿
思科ITE章考试原题及答案图文稿思科I T E章考试原题及答案集团文件版本号：（M928-T898-M248-WU2669-I2896-DQ586-M1988）清洁计算机内部可以减少以下哪种负面环境因素？灰尘在清洁计算机机箱内部时，直接喷射压缩空气容易损坏下列哪种组件？风扇在生产车间，一个家具工厂用笔记本电脑来实现进程监控和报告。
生产车间的环境温度大约为27 摄氏度（80 华氏度）。
湿度相当高，大约为70%。
风扇安装在通风口顶部。
这里的木屑灰尘非常多。
以下哪个条件最可能对在这一环境中使用的笔记本电脑产生不利影响？灰尘蔬菜罐头工厂使用笔记本电脑来监控生产线。
生产环境的环境温度大约是 24 摄氏度（75 华氏度）。
湿度约为 30%。
由于装罐设备的使用，因此噪音很高。
笔记本电脑放在一个木箱中，木箱三面距离笔记本电脑较近。
以下哪个因素最可能对在这一环境中使用的笔记本电脑产生不利影响？放置笔记本电脑的木箱科考队正在用笔记本电脑工作。
科学家们工作地点的温度范围为 -13 华氏度（-25 摄氏度）到 80 华氏度（27 摄氏度）。
湿度约为 40%。
噪声水平较低，但地形崎岖，风速可达每小时 45 英里（每小时 72 公里）。
在需要时，科学家们会停下脚步，用笔记本电脑输入数据。
下列哪一项条件最有可能对于在此环境下使用的笔记本电脑造成负面影响？温度以下哪一项是制定预防性维护计划的一部分？记录每项维护任务的详细信息和频率技术人员正在施工现场执行 PC 硬件维护。
作为预防性维护计划的一部分，技术人员应该执行什么任务？进气风扇除尘。
以下哪项任务应作为硬件维护例行程序的一部分？检查并固定任何松动的电缆。
在测试导致某个问题的若干可能原因时，应该首先测试哪类原因？最容易最明显的原因在解决计算机问题时可以使用下列哪两项物品来帮助制定行动计划（选择两项。
）计算机手册计算机维修历史记录日志为客户排除计算机故障之前应该备份哪两类数据（选择两项。
思科第二期考试试题及答案(正确率100%)
参加考试 - ERouting Final Exam - ${COURSENAME} (版本 ${VERSION}) 窗体顶端剩余时间:窗体底端1窗体顶端请参见图示。
哪台路由器会通告子网 172.16.1.32/28？Router1Router2Router3Router4窗体底端窗体顶端请参见图示。
所有路由器都运行相同的路由协议。
根据图示及其显示的命令，下列哪一项叙述正确？通配符掩码配置有误。
必须在每台路由器上配置默认路由。
路由器 B、C 和 D 无法访问 Internet。
路由协议进程未通告通往 ISP 的链路。
窗体底端3 窗体顶端请参见图示。
所有路由器都运行 RIPv1。
10.1.1.0/29 和 10.1.1.16/29 这两个网络无法互相访问。
此问题的原因可能是什么？因为 RIPv1 是无类协议，不支持该访问。
RIPv1 不支持不连续网络。
RIPv1 不支持负载均衡。
RIPv1 不支持自动总结。
窗体底端窗体顶端请参见图示。
路由器 R1 和 R2 通过其串行接口直接相连，并且都在运行 EIGRP 路由协议。
R1 和 R2 可以 ping 通其邻居的直连串行接口，但无法与邻居建立起EIGRP 相邻关系。
应采取什么措施来解决此问题？启用两台路由器的串行接口。
配置 EIGRP 以发送定期更新。
在路由器之间配置相同的 hello 发送间隔。
使用相同的 EIGRP 进程 ID 配置两台路由器。
窗体底端5窗体顶端请参见图示。
对于发往 192.168.2.0 的数据包，R2 会采取什么操作？它会丢弃数据包。
它会通过 S0/0/0 接口转发数据包。
它会通过 Fa0/0 接口转发数据包。
它会将数据包转发给 R1。
窗体底端窗体顶端请参见图示。
为实施 RIPv2 协议，网络管理员运行了所示命令。
但是， show ip protocol 命令未显示任何输出。
管理员应如何解决该命令没有输出的问题？添加 default-information originate 命令。
思科 cisco 课后习题答案
分界点：
19． 调制解调器： 语音调制解调器将计算机生成的数字信号转换为可通过公共电话网络的模拟线路传输的语音 频率； 速度越快的调制解调器（如有线电视调制解调器和 DSL 调制解调器）在传输时使用的带宽频 率也越高。 CSU/DSU： 数字线路（如 T1 或 T3 线路）需要信道服务单元（CSU）和数据服务单元（DSU） ； 这两者经常合并到一台设备中，名为 CSU/DSU； CSU 端接数字信号， 并通过纠错和线路监视确保连接的完整性； DSU 在 T 载波线路帧和 LAN 能够解释的帧之间进行转换。 接入服务器： 集中处理拨入和拨出用户通信。接入服务器可同时有模拟和数字接口，能够同时支持数百名 用户。 WAN 交换机： 运营商网络中使用的多端口互连设备。这些设备通常交换帧中继、ATM 或 X.25 等数据流。 路由器： 提供用于连接服务提供商网络的网络互联接口和 WAN 接入接口。 这些接口可以是串行接口或其他 WAN 接口。有些类型的 WAN 接口需要通过 DSU/CSU 或调制 解调器（模拟、有线电视或 DSL）等外部设备将路由器连接到服务提供商。 20. X.25： 一种低带宽的老式 WAN 技术，最大速度为 48kbit/s，读卡器通常使用拨号模式 X.25 向中央 计算机验证事务； 对这些应用来说，低带宽和高延时并不是问题，而低成本让 X.25 成为众家之选； 很多服务提供商已使用帧中继代替 X.25。 一种第 2 层 WAN 协议，通常提供 4Mbit/s 或更高的数据速度； 使用虚电路提供永久、共享的中等带宽连接，可同时传输语音和数据； VC 由 DLCI 唯一标识，这确保两台 DTE 设备之间能够进行双向通信。 异步传输模式（ATM）技术是一种基于信元而不是帧的架构，使用 53 字节的定长信元； 这些小型定长信元非常适合传输对延迟敏感的语音和视频数据流。
大二思科考试题库和答案
大二思科考试题库和答案一、单项选择题（每题2分，共20分）1. 思科公司（Cisco）成立于哪一年？A. 1984年B. 1990年C. 1995年D. 2000年答案：A2. 以下哪个协议是用于在IP网络中传输数据的？A. HTTPB. FTPC. TCPD. IP答案：D3. 在OSI模型中，哪一层负责建立、维护和终止通信会话？A. 应用层B. 传输层C. 会话层D. 网络层答案：C4. 以下哪个设备不是网络交换机？A. Layer 2 SwitchB. Layer 3 SwitchC. RouterD. Hub答案：D5. 以下哪个命令用于在Cisco设备上显示当前配置？A. show running-configB. show startup-configC. show interfaceD. show ip interface brief答案：A6. 在Cisco设备上，哪个命令用于保存当前的配置到启动配置文件？A. copy running-config startup-configB. copy startup-config running-configC. save running-configD. write memory答案：A7. 以下哪个命令用于在Cisco设备上创建一个新的VLAN？A. vlan databaseB. configure terminalC. enableD. show vlan答案：A8. 以下哪个命令用于在Cisco设备上将接口配置为Trunk模式？A. switchport mode accessB. switchport mode dynamicC. switchport mode trunkD. switchport mode static答案：C9. 以下哪个协议用于在IP网络中自动分配IP地址？A. DHCPB. DNSC. FTPD. HTTP答案：A10. 在Cisco设备上，哪个命令用于查看设备的接口状态？A. show interfacesB. show ip interface briefC. show running-configD. show vlan答案：B二、多项选择题（每题3分，共15分）11. 以下哪些协议属于TCP/IP模型的应用层协议？A. HTTPB. FTPC. SNMPD. IP答案：A, B, C12. 在Cisco设备上，以下哪些命令用于配置接口？A. interfaceB. ip addressC. no shutdownD. enable答案：A, B, C13. 以下哪些设备可以作为网络的核心设备？A. SwitchB. RouterC. FirewallD. Hub答案：A, B14. 以下哪些命令用于在Cisco设备上查看网络信息？A. show ip routeB. show running-configC. show interfaceD. ping答案：A, C, D15. 以下哪些因素可以影响网络的性能？A. 带宽B. 延迟C. 丢包率D. 网络拓扑结构答案：A, B, C, D三、填空题（每题2分，共20分）16. 在Cisco设备上，使用________命令可以进入特权模式。
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A．目的网络不存在
B．路由器接口的 IP 地址必须配置为网络地址而非主机地址
C．必须使用 no shutdown 命令启用接口
D．每个接口都必须使用 clock rate 命令配置
17．网络管理员刚把新配置输入 Router1。要将配置更改保存到 NVRAM，应该执行哪一条命令？ （C）
A．Router1# copy running-config flash
条配置命令才能与 Melbourne 站点建立连接？（选择三项） （A、B、D）
A．Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
B．Sydney(config-if)# no shutdown
C．Sydney(config-if)# ip address 201.100.53.1 255.255.255.224
D．检查硬件、应用配置、加载 bootstrap、加载 IOS
5．加载配置文件时的默认顺序是怎样的？ （C）
A．NVRAM、FLASH、ROM B．FLASH、TFTP、CONSOLE C．NVRAM、TFTP、CONSOLE D．FLASH、TFTP、ROM
6．在启动过程中，路由器可以从哪些位置加载 Cisco IOS？（选择两项） （B、E）
B．设置通过 Telnet 连接该路由器时使用的口令
C．要求在保存配置前输入 check123
D．创建本地用户帐户以便登录路由器或交换机
16．请参见图示。网络管理员已经为路由器连接到直连网络的接口配置了如图
所示的 IP 地址。从路由器 ping 相连网络上的主机或路由器接口之间相互
ping 都会遭到失败。此问题最可能的原因是什么？ （C）
A．VTY 接口 B．控制台接口
C．以太网接口
D．加密执行模式
E．特权执行模式
F．路由器配置模式
15．输入以下命令的作用是什么？
（B）
R1(config)# line vty 0 4
R1(config-line)# password check123
R1(config-line)# login
A．确保在进入用户执行模式之前输入口令
第一章 路由和数据包转发介绍
1．哪两项说法正确描述了路由器的组件？（选择两项） （B、D）
A．RAM 永久存储着在启动过程中使用的配置文件
B．ROM 含有硬件模块所执行的诊断程序
C．NVRAM 存储着在启动过程中使用的 IOS 的备份副本
D．重新启动时闪存中的内容不会丢失
E．ROM 包含最新而且最完整的 IOS 版本
A．RAM
B．TFTP 服务器
C．NVRAM
D．设置例程
E．闪存
F．终端
7．下列哪些是路由器的功能？（选择三项） （A、C、D）
A．分组交换
B．网段扩展
C．广播域分段 D．根据逻辑编址选择最佳路径
E．根据物理编址选择最佳路径
8．当路由器收到从一个网络发往另一个网络的数据包时，它会执行哪三个过程？（选择三项） （A、D、E）
A．通过解开第 2 层帧报头来解封第 3 层数据包
B．通过 IP 报头中的目的 MAC 地址在路由表中查找下一跳地址
C．解封第 3 层数据包时将第 2 层帧报头保持原样 D．通过 IP 报头中的目的 IP 地址在路由表中查找下一跳地址
E．将第 3 层数据包封装成新的第 2 层帧，并将该帧从送出接口转发出去
F．将第 3 层数据包封装成特殊的第 1 层帧，并将该帧转发到送出接口
9．网络管理员需要通过路由器的 FastEthernet 端口直接连接两台路由器。应使用哪种电缆？ （C）
A．直通电缆
B．全反电缆
C．交叉电缆
D．串行电缆
10．请参见图示。从路由器的运行配置输出可得出什么结论？ （D）
A．口令经过加密
D．此路由器的 FastEthernet0/0 接口和 Serial0/0/0 接口配置了
IP 地址和 no shutdown 命令
E．路由器收到的目的地址为 198.18.9.1 的 IP 数据包后，将从
Serial0/0/0 接口转发出去
Hale Waihona Puke 13．您需要配置图中所示的串行连接，必须在 Sydney 路由器上发出以下哪
D．路由器将根据上次的有效配置生成默认配置文件
E．路由器将监控本地流量，以确定路由协议配置要求
4．以下哪一项正确描述了路由器启动时的顺序？ （A）
A．加载 bootstrap、加载 IOS、应用配置
B．加载 bootstrap、应用配置、加载 IOS
C．加载 IOS、加载 bootstrap、应用配置、检查硬件
D．Sydney(config-if)# clock rate 56000
E．Sydney(config-if)# ip host Melbourne 201.100.53.2
14．口令可用于限制对 Cisco IOS 所有或部分内容的访问。请选择可以用口令保护的模式和接口。（选择三项） （A、B、E）
F．闪存包含用于标识 IOS 位置的启动系统命令
2．图中的哪些接口可用于租用线路 WAN 连接？（选择两项）
（A、D）
A．1
B．2
C．3
D．4
E．5
F．6
3．如果路由器在启动时无法找到有效的配置文件，将发生什么情况？ （B）
A．启动过程将重置
B．路由器将提示用户进行响应，以进入设置模式 C．启动过程将停止，直到获得有效的配置文件
C．负载均衡可让路由器通过多条路径将数据包发送到同一的目的网络
D．EIGRP 支持不等价负载均衡
E．如果到达同一目的地的多条路径具有不同度量，则路由器不支持负载均衡
12．请参见图示。从图中的路由表输出可得出什么结论？（选择两
项） （D、E）
A．此路由器只有两个接口
B．路由器接口尚未进入工作状态
C．此路由器配置为将数据包转发到远程网络
B．Router1(config)# copy running-config flash
B．当前配置已保存到 NVRAM
C．显示的配置将会是路由器下次重新启动时用到的配置
D．显示的命令决定了路由器的当前运行情况
11．关于负载均衡特征的描述，哪两条是正确的？（选择两项） （C、D）
A．负载均衡是指路由器将相同的数据包发送到不同目的网络
B．负载均衡是指通过静态路由和动态路由发送相同数量的数据包