After logging into a router and typing in a few show commands, you press the up arrow key. What will this do?

A．It will recall the previous command line

B．It will move the cursor one line up

C．It will redisplay the current command line

D．It will capitalize the command line

E．None of the above

A.0x2100

B.0x2101

C.0x2102

D.0x2142

在相距几百英里的路由器之间使用租用线路的点到点WAN链路上，下列哪个设备室DTE设备

A.路由器

B.CSU/DSU

C.电话局中心机房设备

D.路由器处理器上的芯片

The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?

A．1 network with 254 hosts

B．4 networks with 128 hosts

C．2 networks with 24 hosts

D．6 networks with 64 hosts

E．8 networks with 36 hosts

哪个命令用来设置Cisco设备串行接口的默认封装()

A.Router(config)encapsulation hdlc

B.Router(config)encapsulation default hdlc

C.Router(config-if)encapsulation hdlc

D.Router(config-if)encapsulation ppp

Which type of cable should be used to make a connection between the Fa0/0 port on a router and the Fa0/0 port switch?

A．Rollover cable

B．Console cable

C．Crossover cable

D．Straight-through cable

E．Serial cable

A.show license

B.show license feature

C.show license udi

D.show version

PAP验证属于双向认证。

此题为判断题(对，错)。