2022计算机思科认证考前点睛模拟考试203

1. [单选题]IP地址为：192.168.50.70，掩码为：255.255.255.248，则该IP和掩码结合划分子网时，每个子网的容量为（）

A. 8
B. 4
C. 12
D. 6

2. [单选题]能够分配给设备的IP，应该是（）

A. 网络有效IP
B. 网络号
C. 网络广播地址
D. 任意IP

3. [单选题]The Ezonexam corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?

A. The number of broadcast domains will be decreased.
B. It will make the broadcasting of traffic between domains more efficient between segments.
C. It will increase the number of collisions.
D. It will prevent segment 1's broadcasts from getting to segment 2.
E. It will connect segment 1's broadcasts to segment 2.

4. [单选题]What is the purpose of the spanning-tree algorithm in a switched LAN?

A. To provide a monitoring mechanism for networks in switched environments.
B. To manage VLANs across multiple switches.
C. To prevent switching loops in networks with redundant switched paths.
D. To segment a network into multiple collision domains.
E. To prevent routing loops in networks.

5. [单选题]Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?

A. 255.255.0.0.
B. 255.255.128.0.
C. 255.255.224.0.
D. 255.255.254.0.
E. None of the above

6. [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）（）

A. PC
B. 网管机
C. WEB服务器
D. 交换机
E. 路由器

7. [单选题]标准访问控制列表的数字标识范围是（）。

A. 1-50
B. 1-99
C. 1-100
D. 1-199

8. [单选题]PPP工作在OSI的哪一层（）

A. 物理层
B. 数据链路层^{(data link layer)}
C. 网络层
D. 传输层

9. [单选题]EIGRP的管理距离（）

A. 90
B. 100
C. 110
D. 120

10. [单选题]配置路由器时，封装PPP协议的命令是：()

A. encap ppp
B. ppp
C. group ppp
D. int ppp

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