CCNA考试题库中英文翻译版及答案6

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14. Refer to the exhibit. Switch1 has just been restarted and has passed the POST routine. Host A sends its initial frame to Host C. What is the first thing the switch will do as regards populating the switching table?

　　14.根据下图， Switch1刚刚完成重启，并完成上电自检。 Host A发送它的第一个侦到Host C ，交换机首先会对switching table做什么操作

　　A. Switch1 will add 192.168.23.4 to the switching table.

　　A. Switch1 会添加192.168.23.4 到switching table.

　　B. Switch1 will add 192.168.23.12 to the switching table.

　　B.Switch1 添加192.168.23.12到switching table.

C. Switch1 will add 000A.8A47.E612 to the switching table.

　　C. Switch1添加 000A.8A47.E612到 switching table.

　　D. Switch1 will add 000B.DB95.2EE9 to the switching table.

　　D.Switch1 添加000B.DB95.2EE9 到 switching table.

　　Answer: C

15. The user of Host1 wants to ping the DSL modem/router at 192.168.1.254. Based on the Host1 ARP table that is shown in the exhibit, what will Host1 do?

15.Host1的用户想PING DSL调制解调器/路由器的 192.168.1.254，ARP表如下图，Host1会怎么操作?

A. send a unicast ARP packet to the DSL modem/router

　　A.发送一个单播ARP包到DSL调制解调器/路由器

　　B. send unicast ICMP packets to the DSL modem/router

　　B.发送一个单播ICMP包到DSL调制解调器/路由器

　　C. send Layer 3 broadcast packets to which the DSL modem/router responds

　　C.发送三层广播包到响应的DSL调制解调器/路由器

　　D. send a Layer 2 broadcast that is received by Host2, the switch, and the DSL modem/router

　　D.发送一个可以被Host2, the switch, and the DSL modem/router 受到的2层广播帧

　　Answer: B