2. 计算机
  3. Routers perform the decision process that selects what path a packet takes．These(71)layer devices participate in the collection

Routers perform the decision process that selects what path a packet takes．These(71)layer devices participate in the collection

admin2019-05-15  75
问题 Routers perform the decision process that selects what path a packet takes．These(71)layer devices participate in the collection and distribution of network一layer information， andperform Layer 3 switching based on the contents of the network layer(72)of eachpacket．You can connect the routers direct1y by point一to一point(73)or local一area networks， or you can connect them by LAN or WAN switches．These Layer 2 switches unfortunately donot have the capability to hold Layer 3(74)information or to select the path taken by apacket through analysis ofits Layer 3 destination address．Thus， Layer 2 switches cannot beinvolved in the Layer 3 packet(75)decision process．
(73)
选项 A、medium
B、links
C、switches
D、carriers
答案B
解析
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