Routers perform the decision process that selects what path a packet takes. Thes..

2015年上半年上午试卷综合知识

第 72 题


章/节	专业英语

Routers perform the decision process that selects what path a packet takes. These （71） layer devices participate it the collection and distribution of network-layer information, and perform Layer 3 switching based on the contents of the network layer （72） of each packet. You can connect the routers directly by point-to-point （73） or local-area networks, or you can connect them by LAN or WAN switches. These Layer 2 switches unfortunately do not have the capability to hold Layer 3 （74） information or to select the path taken by a packet through analysis of its Layer 3 destination address. Thus, Layer 2 switches be involved in the Layer 3 packet （75） decision process.

A. header

B. connection

C. protocol

D. data

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