單項選擇題Which command is used to display the collection of OSPF link states?()

A. show ip ospf lsa database
B. show ip ospf link-state
C. show ip ospf neighbors
D. show ip ospf database


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1.單項選擇題When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

A. show ip access-list
B. show access-list
C. list ip interface
D. show interface
E. show ip interface

2.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?()

A. the switch with the lowest MAC address
B. the switch with the higest MAC address
C. the switch witch the higest IP address
D. the switch with the lowest IP address

3.單項選擇題What is the purpose of the cisco Vlan Trunking protocol?()

A. to provide a mechanism to dynamically assign vlan membership to switch ports
B. to allow traffic to be carried from multiple vlans over a single link between switches
C. to allow native vlan information to be carried over a trunk link
D. to provide a mechanism to manually assign vlan membership to switch ports
E. to allow for managing the additions,deletions,and changes of vlans between switchs

4.單項選擇題Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?()

A. service timestamps debug datetime msec
B. show clock detail
C. clock calendar-valid
D. service timestamps log datetime msec

5.單項選擇題On which options are standard access list based?()

A. source address and subnet mask
B. destination address and wildcard mask
C. source address and wildcard mask
D. destination address and subnet mask

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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?()

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Which device might be installed at a branch office to enable and manage an IPsec site-to-site VPN?()

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How are VTP advertisements delivered to switches across the network?()

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If all OSPF routers in a single area are configured with the same priority value,what value dose a router use for the ODPF router ID in the absence of a loopback interface?()

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At which layer of the OSI model is RSTP used to prevent loops?()

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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

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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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Which cisco ios command can help to determine the timing of various debug events,relative to each other,when you are debugging a complicated router issue?()

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