In which circumstance are multiple copies of the same unicast frame. likely to be transmitted in the Ezonexam Switched LAN?

A. During high traffic periods

B. In an improperly implemented redundant topology

C. After broken links are re-established

D. When upper-layer protocols require high reliability

E. When a dual ring topology is in use

F. None of the above

You are given a PC, a router, and a cable. Select the correct combination that will allow you to log into router VE1 locally using a terminal emulation program such as HyperTerminal.

A. Connect the PC's COM port to the router's console port using a straight-through cable.

B. Connect the PC's COM port to the router's console port using a rollover cable.

C. Connect the PC's COM port to the router's Ethernet port using a straight-through cable.

D. Connect the PC's Ethernet port to the router's Ethernet port using a rollover cable.

E. Connect the PC's Ethernet port to the router's Ethernet port using a straight- through cable.

F. None of the above

距离-向量路由算法最优路径计算的复杂度要比链路-状态路由算法最优路径计算的复杂度大。

此题为判断题(对，错)。

备份路由器IOS的命令是：()

A.copy flash tftp

B.copy running-configt ftp

C.copy IOS tftp

D.copy startup-configt ftp

对路由器的描述，正确的是（）

A.单广播域，单冲突域的设备

B.单广播域，多冲突域的设备

C.多广播域，单冲突域的设备

D.多广播域，多冲突域的设备

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

默认情况下，IGRP衡量路径好坏时，考虑的因素为（）

A.带宽

B.可靠性

C.最大传输单元

D.延时