当前位置: 首页 > 问题分类 > 计算机类考试 > 思科认证 > 问题详情
问题

When you compare the differences between half-duplex and full-duplex Ethernet, which of the following characteristics are exclusive to half-duplex? (Select two answer choices)

A.Half-duplex Ethernet operates in a shared collision domain.

B.Half-duplex Ethernet operates in an exclusive broadcast domain.

C.Half-duplex Ethernet has efficient throughput.

D.Half-duplex Ethernet has lower effective throughput.

E.Half-duplex Ethernet operates in an exclusive collision domain.

参考答案
正确答案:AD
解析:Explanation:
A single device could not be sending a frame. and receiving a frame. at the same time because it would mean that a collision was occurring. So, devices simply chose not to send a frame. while receiving a frame. That logic is called half-duplex logic.

Ethernet switches allow multiple frames to be sent over different ports at the same time. Additionally, if only one device is connected to a switch port, there is never a possibility that a collision could occur. So, LAN switches with only one device cabled to each port of the switch allow the use of full-duplex operation. Full duplex means that an Ethernet card can send and receive concurrently.

Incorrect Answers:
B. Full duplex effectively doubles the throughput of half-duplex operation, because data can be both sent and received at the full 10/100 speed.

C, E. In half duplex operation, the network is shared between all devices in the collision domain.
您可能感兴趣的试题
  • 以下不属于动态路由协议的是()

    A.RIP

    B.ICMP

    C.IS-IS

    D.OSPf

  • 关于RIP协议描述正确的是()。

    A.距离矢量路由协议

    B.链路状态路由协议

    C.有RIPv1和RIPv2两个版本

    D.都使用广播发送,支持验证和VLSM

  • How can a Ezonexam administrator determine if a router has been configured when it is first powered up?

    A.A configured router prompts for a password

    B.A configured router goes to the privileged mode prompt

    C.An un configured router goes into the setup dialog

    D.An un configured router goes to the enable mode prompt

  • 路由器中时刻维持着一张路由表,这张路由表可以是静态配置的,也可以是什么协议产生的()

    A.生成树协议

    B.链路控制协议

    C.被承载网络层协议

    D.动态路由协议

×
验证