單項(xiàng)選擇題Why will a switch never learn a broadcast address?（）

A. Broadcast frames are never sent to swiches.
B. Broadcast addresses use an incorrect format for the switching table.
C. A broadcast address will never be the source address of a frame.
D. Broadcasts only use network layer addressing.
E. A broadcast frame is never forwarded by a switch.


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1.單項(xiàng)選擇題Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?（）

A. link bandwidth
B. hop count
C. link cost
D. administrative distance
E. link delay

2.單項(xiàng)選擇題VLAN 3 is not yet configured on your switch.What happens if you set the switchport access vlan 3 commmand interface configuration mode?（）

A. The command is accepted and the respective VLAN is added to vlan dat.
B. The command is rejected.
C. The command is accepted and you must configure the VLAN manually.
D. The port turns amber.

3.單項(xiàng)選擇題The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?（）

A. 10.10.0.0/18 subnetted with mask 255.255.255.252
B. 10.10.0.0/25 subnetted with mask 255.255.255.252
C. 10.10.0.0/24 subnetted with mask 255.255.255.252
D. 10.10.0.0/23 subnetted with mask 255.255.255.252
E. 10.10.0.0/16 subnetted with mask 255.255.255.252

4.單項(xiàng)選擇題Which component of VPN technology ensures that data can be read only by its intended recipient?（）

A. data integrity
B. encryption
C. key exchange
D. authentication

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Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?（）

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

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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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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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While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）

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Which statement describes the rule of split horizon?（）

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A network administrator needs to configure a serial link between the main office and a remote location.The router at the remote office is a non-cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?（）

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

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What is the subnetwork address for a host with the IP address 201.100.5.68/28?（）

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