單項選擇題Which command can be arouter to verify the layer 3 path to a host?（）

A.traceroute address
B.tracert address
C.ssh address
D.telnet address


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1.單項選擇題Which of the following is true regarding the use of switches and hubs for network connectivity（）。

A.Switches take less time to process frames than hubs take.
B.Switches do not forward broadcasts.
C.Hubs can filter frames.
D.Using hubs can increase the amount of bandwidth available to hosts.
E.Switches increase the number of collision domains in the network.

2.單項選擇題Which command will show the MAC addresses of stations connected to switch ports?（）

A.show mac-address
B.show arp
C.show table
D.show switchport

3.多項選擇題

Refer to the exhibit.The network administrator requires easy configuration options and minimal routingprotocol traffic.Which two options provide adequate routing table information for traffic that passes betweenthe two routers and satisfy the requests of the network administrator？（）

A.a dynamic routing procotol on InternetRouter to advertise summarized routers to CentralRouter.
B.a dynamic routing procotol on CentralRouter to advertise summarized routers to InternetRouter.
C.a static route on InternetRouter to direct traffic that is destined for 172.16.0.0/16 to CentralRouter.
D.a dynamic routing procotol on InternetRouter to advertise all routes to CentralRouer.
E.a dynamic routing procotol on CentralRouer to advertise all routes to InternetRouter
F.a static，default route on CentralRouter that directs traffic to InternetRouter.

4.單項選擇題QoS policies are applied on the switches of a LAN. Which type of command will show the effects of the policy in real time?（）

A.show command
B.debug command
C.configuration command
D.rommon command

5.多項選擇題Which statements are true about EIGRP successor routes (Choose two.)（）。

A.A successor route is used by EIGRP to forward traffic to a destination.
B.Successor routes are saved in the topology table to be used if the primary route fails.
C.Successor routes are flagged as "active" in the routing table.
D.A successor route may be backed up by a feasible successor route.
E.Successor routes are stored in the neighbor table following the discovery process.