[单选题]配置路由器时，封装PPP协议的命令是：()

正确答案 ：A

encap ppp

[单选题]How many usable IP addresses can you get from a conventional Class C address?

正确答案 ：C

254

解析：解析：Explanation:

[单选题]路由器上端口fa0/0,其最大传输速率是（）Mbit/s

正确答案 ：C

100

[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]You need to decide on which trunking method to implement in the Ezonexam network. What is a characteristic of ISL and 802.1q frame. tagging in a switched LAN environment?

正确答案 ：E

They provide inter-switch VLAN communication.

解析：解析：Explanation: A trunk link is the other type of Layer 2 port supported on Cisco switches. When a trunk port is configured, it begins marking frames as they exit the port to indicate which VLAN each frame. is associated with.

[多选题]请选出交换机处理帧的三种模式：()

正确答案 ：ABE

直通模式

存储转发模式

阻塞模式

解析：ABE

[多选题]In which Spanning-Tree states does a switch port learn MAC addresses? (Select two)

正确答案 ：CD

Forwarding

Learning

解析：解析：Explanation:

[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]OSI七层模型中，网络层的数据封装名称为（）

正确答案 ：C

包

[单选题]两台路由器直连到一起，应该使用的线缆为（）

正确答案 ：A

交叉线缆

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