正确答案: BD

Half-duplex Ethernet uses a loopback circuit to detect collisions. Full-duplex Ethernet makes use of two pairs of wires for data.

题目：Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet? (Select two answer choices.)

解析：解析：Explanation:

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学习资料的答案和解析：

[单选题]对于使用链路状态路由协议的路由器如何选择最佳路线到达子网，下列哪项是正确的（）

通过针对链路状态数据库中的信息运行SPF算法，路由器会计算出最佳路由

[单选题]配置路由器时，封装PPP协议的命令是：()

encap ppp

[单选题]命令“ping127.0.0.1”的功能是（）

测试TCP/IP协议是否正常

[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（）

6

[单选题]OSI七层模型中，数据链路层的数据封装名称为（）

帧

[单选题]OSI七层模型中，网络层的数据封装名称为（）

包

[多选题]You need to describe the various types of flow control to your co-workers. Which of the following are types of flow control that can be used in a network? (Choose three)

Congestion avoidance

Windowing

Buffering

[单选题]A receiving host has failed to receive all of the segments that it should acknowledge.What can the host do to improve the reliability of this communication session?

Decrease the window size

解析：解析：Explanation:

[单选题]After working all night and successfully configuring a Cisco router for the Ezonexam network you save your changes on the startup config, reboot the router, and go out for a cigarette. When you return, none of your changes are active and the router boots to the initial configuration mode! Which of the choices below indicates the source of your problem?

Router configuration-register set to bypass startup configuration

解析：解析：Explanation: