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1、问题 1得 0 分，满分10 分Which of the following OSPF commands,when used together,will put the network 192.168.10.0/24 into OSPF area 0?(Select all valid responses)所 选答案：A.Router(config-router)#network 192.168.10.0 0.0.0.255 area 0 正确答案：A.Router(config-router)#network 192.168.10.0 0.0.0.255 area 0 D.Router(co
2、nfig)#router ospf 1 反馈：The network command specifies the IP address(192.168.10.0)followed by the wildcard mask(not the subnet mask),and the area that is to be associated with the OSPF address range(in this case,area 0).The wildcard mask indicates in binary how much of the IP address much be matched
3、with 0s indicating that the bits must match and 1 indicating that they may vary.Thus 0.0.0.255 or 00000000.00000000.00000000.11111111 indicates that any bit in the last octet can vary while all bits in the first 3 octets must match the network address(in other words,192.168.10.xx)问题 2得 0 分，满分10 分On
4、the topic of the OSPF hello protocol;which of the statements below are true?(Select two answer choices)所选答案：A.The OSPF Hello protocol provides dynamic neighbor discovery 正确答案：A.The OSPF Hello protocol provides dynamic neighbor discovery C.The OSPF Hello protocol maintains neighbor relationships 反馈：O
5、SPF contains a protocol(the Hello protocol)that is used to establish and maintain relationships between neighboring nodes.These relationships are called adjacencies.Adjacencies are the basis for the exchange of routing data in OSPF.名师资料总结-精品资料欢迎下载-名师精心整理-第 1 页，共 9 页 -问题 3得 0 分，满分10 分Which of the fol
6、lowing technologies can be used in distance vector routing protocols to prevent routing loops?(Select all valid answer choices)所选答案：A.Shortest path first tree 正确答案：C.Hold-down timers D.Split horizon 反馈：Distance vector routing protocols use the rule of split horizons and hold down timers to prevent r
7、outing loops after a topology change.*Splithorizon-the routing protocol advertises routes out an interface only if they were not learned from updates ententering that interface.*Hold-down timer-After finding out that a router to a subnet has failed,a router waits acertain period of time before belie
8、ving any other routing information about that subnet.问题 4得 0 分，满分10 分A TestKing Switch is connected as shown below:Which IOS commands should you enter if you wanted to link the router TestKing1 with switch port 1?(Select three answer choices)234.GIF所选答案：A.Switch(config)#interface fastethernet 0/1 正确
9、答案：A.Switch(config)#interface fastethernet 0/1 C.Switch(config-if)#switchport mode trunk D.Switch(config-if)#switchport trunk encapsulation dot1q 反馈：Before you can begin,you have to get into the interface.Answer choice A is the only command in the selection that puts the IOS 名师资料总结-精品资料欢迎下载-名师精心整理-第
10、 2 页，共 9 页 -into interface mode.Once in the interface you have to set it to trunk mode,so choice C is correct.问题 5得 0 分，满分10 分Which interface commands would you enter on a Catalyst 2900 switch,if your goal was to bring all VLAN traffic to another directly connected switch?(Select the two valid respo
11、nses)所选答案：A.Switch(config-if)#vlan all 正确答案：C.Switch(config-if)#switchport access vlan all D.Switch(config-if)#switchport mode trunk 反馈：In order to pass all VLAN traffic from one switch to another,a trunk is needed.In order to configure a trunk on a 2900 series switch,only these two commands are req
12、uired.问题 6得 0 分，满分10 分What are the characteristic of link state routing protocols?(Choose all that apply.)所选答案：A.The exchange of advertisement is triggered by a change in the network 正确答案：A.The exchange of advertisement is triggered by a change in the network C.Packets are routed based upon the shor
13、test path to the destination D.Every router in an OSPF area is capable of representing the entire network topology 问题 7得 0 分，满分10 分Which of the following routing protocols are less likely prone routing loops and network reachability problems when used in discontiguous networks?(Select all valid resp
14、onses)名师资料总结-精品资料欢迎下载-名师精心整理-第 3 页，共 9 页 -所选答案：A.OSPF 正确答案：A.OSPF D.EIGRP 反馈：Only OSPF,RIP version 2,and EIGRP carry VLSM information.In a discontiguous network,subnet masks of different lengths can be used,but this information will need to be propagated via the routing protocol if all networks are
15、to be reached.问题 8得 0 分，满分10 分A Catalyst 2950 needs to be reconfigured.What steps will ensure that the old configuration is erased?(Choose three)所 选 答案：A.Modify the configuration register 正确答案：B.Restart the switch C.Delete the VLAN database D.Erase the startup configuration 反馈：For switches such as t
16、he 2950,the process is much the same as a router,but you should delete the VLAN.DAT file before reloading the router.This file contains VLAN information and is kept in flash,so it will still be present after a reload.问题 9得 0 分，满分10 分An administrator would like to configure a switch over a virtual te
17、rminal connection from locations outside of the local LAN.Which of the following are required in order for the switch to be configured from a remote location?(Choose two)所选答案：A.The switch must be reachable through a port connected to its management VLAN 正A.The switch must be reachable 名师资料总结-精品资料欢迎下
18、载-名师精心整理-第 4 页，共 9 页 -确答案：through a port connected to its management VLAN D.The switch must be configured with an IP address,subnet mask,and default gateway 反馈：In order the telnet to any Cisco device,the device must be reachable from the remote location.For a Cisco switch to be reachable from remote
19、 locations,it must have an IP address,subnet mask,and default gateway assigned.Communication with the switch.问题 10得 0 分，满分10 分Which of the following describe private IP addresses?(Choose two)所选答案：A.Addresses chosen by a company to communicate with the Internet.正确答案：B.Addresses that cannot be routed
20、through the public Internet.D.A scheme to conserve public addresses.反馈：Private IP address space has been allocated via RFC 1918.This means the addresses are available for any use by anyone and therefore the same private IP addresses can be reused.However they are defined as not routable on the publi
21、c Internet.问题 11得 0 分，满分10 分Two TestKing routers are connected together as shown in the diagram below:You work as a network administrator at TestK.You attempt to telnet from the console port on Router TestKing1 to 192.1.2.65.The Telnet connection is unsuccessful.However,a ping to 192.1.2.65 is succe
22、ssful.What could cause this problem?(Select two)237.GIF所选答案：A.access control list 名师资料总结-精品资料欢迎下载-名师精心整理-第 5 页，共 9 页 -filtering 正确答案：A.access control list filtering D.missing VTY password 反馈：Since a ping to 192.1.2.65 is successful we can eliminate IP configuration being incorrect,however a telnet s
23、ession is not successful could indeed be because the vty password is not set or missing.To be able to telnet to the router you need the set the telnet with line vty 0 4 command.Also,C is correct because an access list that was placed on the router could be configured to deny the telnet traffic,while
24、 at the same time permitting ICMP ping traffic.问题 12得 0 分，满分10 分In EIGRP,what kind of route information is stored in the RAM of the router and main-tained by way of hello packets and update packets?(Select two answer choices)所选答案：A.Neighbor Table 正确答案：A.Neighbor Table D.Topology Table 反馈：In EIGRP th
25、e only two tables of significance are the neighbor table and the topology table.问题 13得 0 分，满分10 分The TestKing switches shown in the diagram,Core and Core2,are both Catalyst 2950s.The addressing scheme for each company site is as follows:Router Ethernet port-1st usable address Core-2nd usable address
26、 Core2-3rd usable address For this network,which of the following commands must be configured on Core2 to allow it to be managed remotely from any subnet on the network?(Choose three)236.GIF所 选A.Core2(config)#ip 名师资料总结-精品资料欢迎下载-名师精心整理-第 6 页，共 9 页 -答案：default-gateway 192.168.1.9 正 确答案：A.Core2(config)
27、#ip default-gateway 192.168.1.9 B.Core2(config)#interface vlan 1 Core2(config-if)#ip address 192.168.1.11 255.255.255.248 C.Core2(config)#line vty 0 4 Core2(config-line)#password cisco 反馈：IP default-gateway address is a global command that sets the default gateway so that the management interface ca
28、n be reached from a remote network.This is the correct command used on Cisco switches.In order to be reachable,the IP address of VLAN 1 must also be specified and must be in the same subnet as the default gateway IP address.Finally,in order to remotely connect via telnet to any Cisco device the pass
29、word must e set or you will get a password required,but none set error message when you try to telnet to it.问题 14得 0 分，满分10 分Which of the following OSPF commands,when used together,will put the network 192.168.10.0/24 into OSPF area 0?(Select all valid responses)所选答案：A.Router(config-router)#network
30、192.168.10.0 0.0.0.255 area 0 正确答案：A.Router(config-router)#network 192.168.10.0 0.0.0.255 area 0 D.Router(config)#router ospf 1 反馈：The network command specifies the IP address(192.168.10.0)followed by the wildcard mask(not the subnet mask),and the area that is to be associated with the OSPF 名师资料总结-精
31、品资料欢迎下载-名师精心整理-第 7 页，共 9 页 -address range(in this case,area 0).The wildcard mask indicates in binary how much of the IP address much be matched with 0s indicating that the bits must match and 1 indicating that they may vary.Thus 0.0.0.255 or 00000000.00000000.00000000.11111111 indicates that any bit
32、 in the last octet can vary while all bits in the first 3 octets must match the network address(in other words,192.168.10.xx)问题 15得 0 分，满分10 分What will cause a TestKing router to enter setup mode?(Choose two)所 选答案：A.The configuration file is missing in NVRAM.正确答案：A.The configuration file is missing
33、in NVRAM.D.The setup command was issued from the privileged mode prompt.反馈：When router boots up,it checks the valid configuration into NVRAM and tries to load the con-figuration.If there is not configuration router automatically goes into setup dialog.From setup dialog,you able to configuration the
34、basic configuration.问题 16得 0 分，满分10 分What are the possible trunking modes for a switch port?(Choose three)所选答案：A.Transparent 正确答案：B.Auto C.On D.Desirable 反 Here,the trunk link is identified by its physical 名师资料总结-精品资料欢迎下载-名师精心整理-第 8 页，共 9 页 -馈：location as the switch module number and port number.The trunking mode can be set to any of the following:on-This setting places the port in permanent trunking mode.The corresponding switch port at.名师资料总结-精品资料欢迎下载-名师精心整理-第 9 页，共 9 页 -