單項選擇題Router A is unable to reach Router B.Both routers are running ios version 12.0.After reviewing the command output and graphic,what is the most likely cause of the problem?（）

A. incorrect bandwidt h configuration
B. incorrect LMI configuration
C. incorrect map statement
D. incorrect IP address


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1.單項選擇題Which command enables IPv6 forwarding on a cisco router?（）

A. ipv6 host
B. ipv6 unicast-routing
C. ipv6 local
D. ipv6 neighbor

2.單項選擇題In the implementation of VLSM techniques on a network using a single Class C IP address,which subnet mask is the most efficient for point-to-point serial links?（）

A. 255.255.255.240
B. 255.255.255.254
C. 255.255.255.252
D. 255.255.255.0
E. 255.255.255.248

3.單項選擇題Which IPv6 address is valid?（）

A. 2031:0:130F::9C0:876A:130B
B. 2001:0DB8:0000:130F:0000:0000:08GC:140B
C. 2001:0DB8:0:130H::87C:140B
D. 2031::130F::9C0:876A:130B

4.單項選擇題Which of the following protocols uses both TCP and UDP ports?（）

A. SMTP
B. Telnet
C. FTP
D. DNS

5.單項選擇題Which command enhances the 802.1D convergence time on ports that are connected to hosts?（）

A. spanning-tree backbonefast
B. spanning-tree uplinkfast
C. spanning-tree portfast
D. spanning-tree cost512

7.單項選擇題Which command helps a network administrator to manage memory by displaying flash memory and NVRAM utilization?（）

A. show secure
B. show file systems
C. show flash
D. show version

8.單項選擇題What is the most likely reason for the dispartly between the actual network numbers at the branches and the routes in the routing table on Gateway-Router?（）

A. Branch-Router2 is configured to send both RIPv1 and RIPv2 updates.
B. Gateway-Router is configured to only receive RIPv2 updates.
C. Gateway-router is configured to receive only RIPv1 updates.
D. Branch-Router1 is configured to only send RIPv1 updates

9.單項選擇題which address range efficiently summarizes the routing table of the addresses for router main?（）

A. 172.16.0.0/18
B. 172.16.0.0/16
C. 172.16.0.0/20
D. 172.16.0.0/21

10.單項選擇題assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?（）

A. 2 through 1001
B. 1 through 1001
C. 1 through 1002
D. 2 through 1005

最新試題

Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?（）

題型：單項選擇題

Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）

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What is the purpose of the cisco Vlan Trunking protocol?（）

題型：單項選擇題

The network administrator cannot to switch 1 over a telnet session,although the hosts attached to switch 1 can ping the interface Fa0/0 of the router.Given the information in the graphic and assuming that the router and switch2 are configured properly,which of the following commands should be issued on switch 1 to correct this problem?（）

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A router receives information about network 192.168.10.0/24 from multiple sources.What will the router consider the most reliable information about the path to that network?（）

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Which Cisco IOS diagnostics command can disrupt the operation of a router under high-load conditions?（）

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Which address is the IPV6 all-RIP-routers muticast group address that is used by RIPng as the destaion address?（）

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What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?（）

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After the show ip route command has been entered,the follwing routes are displayed.Which route will not be entered into the routing table of a neighboring router?（）

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Which command displays the CHAP authentication process as it occurs between two routers?（）

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