Router 1 is configured for BGP as dual-homed on the Cisco network. Which three BGP attributes are carried in every BGP update on this router （both IBGP and EBGP）？（）A、originB、router-IDC、AS-pathD、local-preferenceE、next-hop
Router 1 is configured for BGP as dual-homed on the Cisco network. Which three BGP attributes are carried in every BGP update on this router （both IBGP and EBGP）？（）
- A、origin
- B、router-ID
- C、AS-path
- D、local-preference
- E、next-hop
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【问题4】（2分）根据图1-5，在主机host3上对网络1进行了连通性测试时所经过的路径是（9）。（9）备选答案：A．host3→Router3→Router2→网络1B．host3→Router3→Router1→Router2→网络1
Cisco路由器第3模块第1端口通过E1标准的DDN专线与一台远程路由器相连，端口的IP地址为195.112.41.81/30，远程路由器端口封装PPP协议。下列路由器的端口配置，正确的是A）Router (config)#interface s3/1Router (config-if)#bandwidth 2048Router (config-if)#ip address 195.112.41.81 255.255.255.252Router (config-if)#encapsulation pppRouter (config-if)#exitB）Router (config)#interface a3/1Router (config-if)#bandwidth 2000Router (config-if)#ip address 195.112.41.81 255.255.255.252Router (config-if)#encapsulation pppRouter (config-if)#exitC）Router (config)#interface s3/1Router (config-if)#bandwidth 2Router (config-if)#ip address 195.112.41.81 255.255.255.252Router (config-if)#encapsulation pppRouter (config-if)#exitD）Router (config)#interface s3/1Router (config-if)#bandwidth 2048Router (config-if)#ip address 195.112.41.81 255.255.255.252Router (config-if)#encapsulation hdlcRouter (config-if)#exit
以下是在路由器Router1上的部分配置信息，结合图2-9所示的网络拓扑图和题干的描述信息，将(1)～ (4)空缺处的内容填写完整。Router＞enableRouterconfig terRouter (config) hostname Router1Router1 (config) user Router2 password wg_wgRouter1 (config) no logging consoleRouter1 (config) isdn switch-type basic-net3Routcr1 (config) (1)Router1 (config-if) ip address 192.200.10.1 255.255.255.0Router1 (config-if) (2)Router1 (config-if) dialer map (3)Router1 (config-if) dialer load-threshold 80Router1 (config-if) ppp multilinkRouter1 (config-if) dialer-group 1Router1 (config-if) ppp authentication chapRouter1 (contig-if) no shutdownRouter1 (config-if) exit(4)Router1 (config) endRouter1
下面是路由器Router1的配置命令列表，请为(6)～(10)空缺处填写合适的命令/参数，实现Router1的正确配置。Router＞enableRouter config terminalRouter (config) hostname Router1Router1 (config) interface ethernet 0Router1 (config-if) ip address (6)Router1 (config-if) no shutdownRouter1 (config-if) (7)Router1 (config-if) ip address (8)Router1 (config-if) no shutdownRouter1 (config-if) exitRouter1 (config) ip routingRouter1 (config) router ospf 100Router1 (config-router) (9)Router1 (config-router) (10)Router1 (config-router) ip ospf message-digest-key 1 md 5 wg_gczRouter1 (config-router) area 0 authentication message-digestRouter1 (config-if) endRouter1 Copy run start
You have been asked to establish reachability between Router 1‘s and Router 2‘s loopback addresses as shown in the exhibit. Which two steps will accomplish this task?() A. Create a static route on Router 1 to 172.17.28.1 with a next hop of 10.10.10.2.B. Create a static route on Router 1 to 172.17.28.1 with a next hop of 10.10.10.1.C. Create a static route on Router 2 to 172.17.25.1 with a next hop of 10.10.10.1.D. Create a static route on Router 1 to 172.17.25.1 with a next hop of 10.10.10.2.
You have a Level 1－only router (Router A) in IS－IS area 49.0001. How does Router A learn how to get to IP prefixes in other areas?() A. Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.B. The Level 1/Level 2 router in area 49.0001 sets the attached bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001.C. The Level 1/Level 2 router in area 49.0001 sets the attached bit in the Level 2 LSP it floods into area 49.0001.D. The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
下面是路由器Router1的配置命令列表，在空白处填写合适的命令/参数，实现Router1的正确配置。Router1＞enRouter1conf termRouter1(config)iriterface e0Router1(config-if)ip address 192.1.0.129 255.255.255.192Router1 (config-if)interface s0Router1(config-if)ip address 192.200.10.5 255.255.255.252Router1(config-if)endRouter1(config)Eouter (5)Router1(config-router)network (6) area 0Router1(config-router)network (7) area 1Router1(config-router)exitRouter1copy run start
Refer to the exhibit. Routers R1 and R2 have established a neighbor relationship and are exchanging routing information. The network design requires that R1 r eceive routing updates from R2, but not advertise any routes to R2. Which configuration command sequence will successfully accomplish this task? （）A. R1(config)# router eigrp 1 R1(config - router)# passive - interface serial 0B. R1(config)# access - list 2 0 deny any R1(config)# router eigrp 1 R1(config - router)# distribute - list 20 out serial 0C. R2(config)# access - list 20 permit any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 in serial 0D. R1(config)# access - list 20 permit any R 1(config)# router eigrp 1 R1(config - router)# distribute - list 20 in serial 0E. R2(config)# access - list 20 deny any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 out serial 0F. R2(config)# router eigrp 1 R2(config - router)# passive - interface serial 0
Refer to the exhibits. Router B should advertise the network co nnected to the E0/0/0 interface to router A and block all other network advertisements. The IP routing table on router A indicates that it is not receiving this prefix from router B. What is the probable cause of the problem?（）A. An access list on router B is causing the 192.168.3.16/28 network to be deniedB. An access list on router B is causing the 192.168.3.32/28 network to be deniedC. The distribute list on router B is referencing a numbered access list that does not exist on router BD. The d istribute list on router B is referencing the wrong interface
Refer to the exhibit. During the process of configuring a virtual link to connect area 2 with the backbone area, the network administrator received this console message on R3:*Mar 1 00:2 5:01.084: %OSPF -4- ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual link but not found from 20.20.20.1, Serial 0 .How should the virtual link be configured on the OSPF routers to establish full connectivity between the areas?（）A.R1(config - router)# area 0 virtual - link 1.1.1.1R3(config - router)# area 2 virtual - link 3.3.3.3B.R1(config - router)# area 1 virtual - link 2.2.2.2 R3(config - router)# area 1 virtual - link 2.2.2.2C.R1(config - router)# area 1 virtual - link 20.20 .20.2 R3(config - router)# area 1 virtual - link 30.30.30.2D.R1(config - router)# area 1 virtual - link 30.30.30.3 R3(config - router)# area 1 virtual - link 20.20.20.1E.R1(config - router)# area 1 virtual - link 3.3.3.3 R3(config - router)# area 1 virtual - link 1.1 .1.1
What is themostlikelyreasonforthedispartlybetweentheactualnetworknumbersatthebranchesandtheroutesintheroutingtableonGateway－Router?() A.Branch-Router2isconfiguredtosendbothRIPv1andRIPv2updates.B.Gateway-RouterisconfiguredtoonlyreceiveRIPv2updates.C.Gateway-routerisconfiguredtoreceiveonlyRIPv1updates.D.Branch-Router1isconfiguredtoonlysendRIPv1updates.
Refer to the exhibit. What will Router1 do when it receives the data frame shown?() A.Router1 will strip off the source MAC address and replace it with the MAC address 0000.0c36.6965.B.Router1 will strip off the source IP address and replace it with the IP address 192.168.40.1.C.Router1 will strip off the destination MAC address and replace it with the MAC address 0000.0c07.4320.D. Router1 will strip off the destination IP address and replace it with the IP address of 192.168.40.1.E.Router1 will forward the data packet out interface FastEthernet0/1.F.Router1 will forward the data packet out interface FastEthernet0/2.
WhatisthemostlikelyreasonforthedispartlybetweentheactualnetworknumbersatthebranchesandtheroutesintheroutingtableonGateway－Router?() A.Branch-Router2isconfiguredtosendbothRIPv1andRIPv2updates.B.Gateway-RouterisconfiguredtoonlyreceiveRIPv2updates.C.Gateway-routerisconfiguredtoreceiveonlyRIPv1updates.D.Branch-Router1isconfiguredtoonlysendRIPv1updates.
Refertotheexhibit.Tworoutershavejustbeenconfiguredbyanewtechnician.Allinterfacesareup.However,theroutersarenotsharingtheirroutingtables.Whatistheproblem?() A.Split horizon is preventing Router2 from receiving routing information from Router1.B.Router1 is configured for RIP version 2,and Router2 is configured forRIP version 1.C.Router1 has an ACL that is blocking RIP version 2.D.There is a physical connectivity problem between Router1 and Router2.E.Router1 is using authentication and Router2 is not.
Which of the following access list statements would deny traffic from a specifichost?（）A、Router(config)# access-list 1 deny 172.31.212.74 anyB、Router(config)# access-list 1 deny 10.6.111.48 hostC、Router(config)# access-list 1 deny 172.16.4.13 0.0.0.0D、Router(config)# access-list 1 deny 192.168.14.132 255.255.255.0E、Router(config)# access-list 1 deny 192.168.166.127 255.255.255.255
在Quidway路由器上，下面哪条命令能把路由器的名字改为Router1（）.A、[Quidway] name Router1B、[Quidway] hostname Router1C、[Quidway] sysname Router1D、[Quidway] routername Router1
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true (Choose two.)（）。A、Router C will use ICMP to inform Host 1 that Host 2 cannot be reachedB、Router C will use ICMP to inform Router B that Host 2 cannot be reachedC、Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reachedD、Router C will send a Destination Unreachable message typeE、Router C will send a Router Selection message typeF、Router C will send a Source Quench message type
You have a Level 1-only router （Router A） in IS-IS area 49.0001. How does Router A learn how to get to IP prefixed in other areas？（）A、Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.B、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001.C、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU （LSP） it floods into area 49.0001.D、The Level 1/Level 2 router in area 49.0001 advertises these prefixed into area 49.0001 using a Level 2 LSP it floods into the area.
MSR路由器上取消RIP协议自动路由聚合的命令是（）。A、[Router-rip-1]undo summaryB、[Router-rip-1]undo auto-summaryC、[Router-Serial1/0]undo summaryD、[Router-Serial1/0]undo auto-summary
Host 1 is trying to communicate with Host 2. The e0 interface on Router C is down. Which of the following are true?（）A、Router C will use ICMP to inform Host 1 that Host 2 cannot be reached.B、Router C will use ICMP to inform Router B that Host 2 cannot be reached.C、Router C will use ICMP to inform Host 1, Router A, and Router B that Host 2 cannot be reached.D、Router C will send a Destination Unreachable message type.E、Router C will send a Router Selection message type.F、Router C will send a Source Quench message type.
Which commands are required to properly configure a router to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0?（）A、Router(config)#router ospf 1B、Router(config)#router ospf 0C、Router(config)#router ospf area 0D、Router(config-router)#network 192.168.16.0 0.0.0.255 area 0E、Router(config-router)#network 192.168.16.0 0.0.0.255 0F、Router(config-router)#network 192.168.16.0 255.255.255.0 area 0
You wish to limit telnet access into your Cisco router to only a single host. In order to accomplish this, access list 1 has been written to allow host 172.16.1.224 access to the router vty lines. What command would assign this access- list to the Virtual Terminal Lines?（）A、router(config-line)# ip access-group 1 inB、router(config-line)# access-class 1 inC、router(config-line)# ip access-list 1 inD、router(config-line)# access-line 1 in
Router R-1 is configured for BGP routing as shown below： router bgp 65300network 27.0.0.0neighbor 192.23.1.1 remote-as 65300 From the perspective of router R-1， what kind of router is the router with IP address 192.23.1.1？（）A、A peer router running IBGPB、A peer router running EBGPC、A community member running IBGPD、A peer group member running IBGPE、A peer group member running EBGP
Which commands are required to properly configure a router to run OSPF and to add network 192.168.16.0/24 to OSPF area 0?（）A、Router(config)#router ospf 1B、Router(config)#router ospf 0C、Router(config)#router ospf area 0D、Router(config-router)#network 192.168.16.0 0.0.0.255 area 0E、Router(config-router)#network 192.168.16.0 0.0.0.255 0F、Router(config-router)#network 192.168.16.0 255.255.255.0 area 0
单选题在Quidway路由器上，下面哪条命令能把路由器的名字改为Router1（）.A[Quidway] name Router1B[Quidway] hostname Router1C[Quidway] sysname Router1D[Quidway] routername Router1
多选题You have been asked to establish reachability between Router 1's and Router 2's loopback addresses as shown in the exhibit.Which two steps will accomplish this task?（）ACreate a static route on Router 1 to 172.17.28 1 with a next hop of 10.10.10.2BCreate a static route on Router 1 to 172.17.28 1 with a next hop of 10.10.10.1CCreate a static route on Router 2 to 172.17.25.1 with a next hop of 10.10.10.1DCreate a static route on Router 1 to 172.17.25.1 with a next hop of 10.10.10.2
单选题There are three IS-IS routers on a Gigabit Ethernet segment: Router A, Router B, and Router C. Each router is configured in the same area and each routers Gigabit Ethernet interface is configured for Level 1-only. Router A is the Designated Intermediate System (DIS). Each routers IP address on that segment is: Router A: 10.1.1.1/24 Router B: 10.1.1.2/24 Router C: 10.2.2.1/26 Which statement is true about all the adjacencies that exist on that LAN?（）ANo routers are adjacent with each other.BOnly Router A and Router B are adjacent at Level 1.COnly Router A and Router B are adjacent at Level 2.DAll three routers are adjacent with each other at Level 1.