[单选题]A Ezonexam switch is configured with all ports assigned to VLAN 2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?

正确答案 ：D

An additional broadcast domain will be created.

解析：解析：Explanation:

[单选题]IP地址为：192.168.50.70，掩码为：255.255.255.248，则该IP地址所在子网的子网有效IP为（）

正确答案 ：C

192.168.50.65---192.168.50.70

[单选题]关于PPP和HDLC的说法中，错误的是（）

正确答案 ：D

在配置ISDN时，广域网协议不能封装成PPP，但可以封装成HDLC

[单选题]How can a Ezonexam administrator determine if a router has been configured when it is first powered up?

正确答案 ：C

An un configured router goes into the setup dialog

解析：解析：Explanation:

[单选题]扩展IP访问权限表的表号范围是：()

正确答案 ：C

100-199

[单选题]RIP协议负载均衡的路径数量为（）

正确答案 ：D

最多6条

[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:

[多选题]下列哪一设备工作时，要用到OSI的七个层（一层到七层）（）

正确答案 ：ABC

PC

网管机

WEB服务器

解析：ABC

[单选题]You are a senior network administrator at Ezonexam, and while performing the password recovery procedure on your 2500 series Cisco router, you type in the following command:o/r 0x2142

正确答案 ：C

It is used to bypass the configuration in NVRAM.

解析：解析：Explanation:

[多选题]网络中经常使用DDN服务，请选出DDN的优点（）

正确答案 ：ADE

传输质量高

使用虚电路

专用线路

解析：ADE

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