正确答案: C

Keepalives are being received on the interface.

题目：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?

解析：解析：Explanation:

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举一反三的答案和解析：

[单选题]为了查看路由器的E0端口上，是否挂接了访问权限表，应该使用的命令是（）

show interface e0

[单选题]Why might the Ezonexam network administrator set the configuration register to 0x2142 on a 2600 series Cisco router?

To reset the console password

解析：解析：Explanation:

[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()。

标准ACL可以根据分组中的IP目标地址进行过滤

[单选题]要把交换机的配置文件保存到tftp服务器，应使用的命令为（）

copy running-configt ftp

[单选题]基本IP访问权限表的表号范围是：()

1-99

[多选题]As a Ezonexam trainee you are required to set the default gateway on a Cisco switch to the IP address of 192.168.1.115. Which IOS command should you use?

TestKSwitch(config) ip route-default 192.168.1.115

TestKSwitch(config) ip default-gateway 192.168.1.115

TestKSwitch(config) ip route 192.168.1.115 0.0.0.0

TestKSwitch(config) ip default-network 192.168.1.115

解析：解析：Explanation:

[单选题]From where does a small network typically get its IP network addresses or IP block?

From the Internet Service Provider (ISP)

解析：解析：Explanation:

[单选题]路由器上激活端口的命令是（）

no shutdown