單項選擇題What is one benefit of PVST+?()

A. PVST+reduces the CPU cycles for all the switches in the network
B. PVST+automatically selects the root bridge location,to provide optimized bandwidth usage.
C. PVST+allow the root switch location to be optimized per vlan.
D. PVST+supports Layer 3 load balancing without loops.


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1.單項選擇題Which item represents the standard IP ACL?()

A. access-list 50 deny 192.168.1.1 0.0.0.255
B. access-list 110 permit ip any any
C. access-list 2500 deny tcp any host 192.168.1.1 eq 22
D. access-list 101 deny tcp any host 192.168.1.1

2.單項選擇題Which statement about access lists that are applied to an interface is true?()

A. you can apply multiple access lists with the same protocol or in different direction.
B. you can config one access list,per direction,per layer 3 protocol
C. you can place as many access lists as you want on any interface
D. you can apply only one access list on any interface

3.單項選擇題Which command enables RSTP on a switch?()

A. spanning-tree mode rapid-pvst
B. spanning-tree uplinkfast
C. spanning-tree backbonefast
D. spanning-tree mode mst

4.單項選擇題DNS servers provide what service?()

A. they run a spell check on host names to ensure accurate routing
B. they map individual hosts to their specific IP address
C. they convert domain names into IP address
D. Given an IP address,they determine the name of the host that is…

5.單項選擇題There are no boot system commands in a router configuration in NVRAM.What is the fallback sequence that router will use to find an ios during reload?()

A. Flash,TFTP server,ROM
B. Flash,NVRAM,ROM
C. ROM,NVRAM,TFTP server
D. NVRAM,TFTP server,ROM
E. TFTP server,Flash,NVRAM

最新試題

Which IPsec security protocol should be used when confidentiality is required?()

題型:單項選擇題

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

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?()

題型:單項選擇題

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?()

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A network administrator is trying to add a new router into an established OSPF network.The networks attached to the new router do not appear in the routing tables of the other OSPF routers.Given the information in the partial configuration shown below,what configuration error is causing this problem?()Router(config)#router ospf 1Router(config-router)#network 10.0.0.0 255.0.0.0 area 0

題型:單項選擇題

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?()

題型:單項選擇題

Which statement is true, as relates to classful or classless routing?()

題型:單項選擇題

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

題型:單項選擇題

An employee of ABC company has move to an office on a different floor. Although the administrator is able to telnet to all of the routers,the address of Switch F is needed in order to verify that the employee remains in the same VLAN.Which action could be used by the administrator to find the IP address of Switch F?()

題型:單項選擇題