[多选题]The LAN needs are expanding at the Ezonexam corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the Ezonexam network.Which of the following are layer 1 devices that you can use? (Choose all that apply.)

正确答案 ：DE

A hub

A repeater

解析：解析：Explanation:

[单选题]IP扩展访问列表的数字标示范围是多少（）。

正确答案 ：C

100-199

[单选题]The Ezonexam network administrator has just issued the "switchport trunk native vlan 998" command on switch VE2. What is the function of this command?

正确答案 ：B

It designates VLAN 998 for untagged traffic

[单选题]While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?

正确答案 ：E

The network layer

解析：解析：Explanation:

[单选题]常见的LSA有几种类型()

正确答案 ：C

6

[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]下列哪个network命令会告知此路由器开始使用IP地址为10.1.1.1、10.1.100.1和10.1.120.1的接口上的OSPF（）

正确答案 ：B

network 10.0.0.0 0.255.255.255 area 0

[单选题]通过路由器的“配置端口console”对路由器进行配置，应该使用的线缆为（）

正确答案 ：C

反转线缆

[单选题]You are an administrator of the Ezonexam switched network and your goal is to reduce some of the administrative overhead on your network. You plan on achieving this by configuring a new VLAN for each department in the Ezonexam network.However, you need to share the VLAN information across numerous switches. Which of the following would allow you accomplish this?

正确答案 ：D

VTP

解析：D 解析：Explanation:

[多选题]默认情况下，IGRP衡量路径好坏时，考虑的因素为（）

正确答案 ：AD

带宽

延时

解析：AD

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