[单选题]下列关于路由器和交换机的描述中,错误的是()
正确答案 :D
交换机可以转发广播
[多选题]Two stations on the Ezonexam LAN transmit at the same time, resulting in a collision. What happens when a collision occurs on the network? (Choose all that apply)
正确答案 :BDE
A jam signal informs all devices that a collision occurred.
The devices that are involved in the collision stops transmitting for a short time.
The collision invokes a random back-off algorithm.
解析:解析:Explanation:
[单选题]把指定端口添加到VLAN的命令是:()
正确答案 :D
switch port
[单选题]After logging into a router and typing in a few show commands, you press the up arrow key. What will this do?
正确答案 :A
It will recall the previous command line
解析:解析:Explanation:
[单选题]PPP工作在OSI的哪一层()
正确答案 :B
数据链路层
[单选题]访问控制列表分为标准和扩展两种。下面关于ACL的描述中,错误的是()。
正确答案 :C
标准ACL可以根据分组中的IP目标地址进行过滤
[单选题]路由器上,命令“show int s0”的显示结果为:Serial0 is up,line protocol is down出现该结果的可能原因是()
正确答案 :C
两端设备协议不一致
[单选题]Ezonexam has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
正确答案 :B
VTP will allow switches to share VLAN configuration information
[单选题]哪个命令可以成功测试网络:()
正确答案 :B
Routerping192.5.5.30
[单选题]TCP23是()协议端口号;UDP69是()端口号;TCP80是()端口号。
正确答案 :C
TELNET TFTP HTTP
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