计算机类考试2022思科认证知识点汇总每日一练(09月13日)

1. [单选题]为了使配置私有IP的设备能够访问互联网，应采用的技术是()

A. NAT
B. VLAN
C. ACCESS-LIST
D. DDR

2. [单选题]路由器上激活端口的命令是（）

A. shutdown
B. no shutdown
C. up
D. noup

3. [多选题]网络中经常使用DDN服务，请选出DDN的优点（）

A. 传输质量高
B. 接入方式灵活
C. 偷占带宽
D. 使用虚电路
E. 专用线路

4. [单选题]An administrator issues the show ip interface s0/0 command and the output displays that interface Serial0/0 is up, line protocol is up.What does "line protocol is up" specifically indicate about the interface?

A. The cable is attached properly.
B. CDP has discovered the connected device.
C. Keepalives are being received on the interface.
D. A carrier detect signal has been received from the connected device.
E. IP is correctly configured on the interface.

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