[单选题]On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)

正确答案 ：C

The hosts will attempt to resume transmission after a time delay has expired.

解析：C 解析：Explanation:

[单选题]命令ip nat pool aaa 192.1.1.2 192.1.1.10 netmask 255.255.255.0的作用是()

正确答案 ：B

定义地址池

[多选题]With regard to Ethernet media access methods, which of the following are true?(Choose all that apply.)

正确答案 ：BC

A device listens and waits until the media is not busy before transmitting.

All devices on an Ethernet segment see data that passes on the network medium.

解析：解析：Explanation:

[单选题]交换机工作在OSI七层模型的哪一层()

正确答案 ：B

数据链路层

[单选题]默认情况下，RIP定期发送路由更新的时间是（）

正确答案 ：B

30S

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