The IP network 210.106.14.0 is subnetted using a /24 mask. H

【名词&注释】

路由器(router)、应用层(application layer)、会话层(session layer)、数据链路层(data link layer)

[单选题]The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?

A. 1 network with 254 hosts
B. 4 networks with 128 hosts
C. 2 networks with 24 hosts
D. 6 networks with 64 hosts
E. 8 networks with 36 hosts

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学习资料：

[单选题]SMTP工作在OSI哪一层（）

A. 会话层
B. 表示层
C. 传输层
D. 应用层

[单选题]配置路由器特权用户“加密密码”的命令是：()

A. password
B. enable password
C. enable secret
D. passwd

[单选题]默认情况下，RIP定期发送路由更新的时间是（）

A. 15S
B. 30S
C. 60S
D. 90S

[单选题]OSI七层模型中，数据链路层^{(data link layer)}的数据封装名称为（）

A. 比特
B. 帧
C. 包
D. 段

[单选题]The network administrator has configured port security on a Ezonexam switch. Why would a network administrator configure port security on this Ezonexam device?

A. To prevent unauthorized hosts from getting access to the LAN
B. To limit the number of Layer 2 broadcasts on a particular switch port
C. To prevent unauthorized Telnet or SSH access to a switch port
D. To prevent the IP and MAC address of the switch and associated ports
E. None of the above

[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.

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