2. 计算机
  3. Refer to the exhibit． What is the correct addressing for a frame and packet received by Host B from Host A?

Refer to the exhibit． What is the correct addressing for a frame and packet received by Host B from Host A?

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问题 Refer to the exhibit． What is the correct addressing for a frame and packet received by Host B from Host A?
选项 A、Destination MAC: 0011．43da．2c98
Source MAC: 0070．0e8f．088a
Destination IP: 192．168．60．5
Source IP: 192．168．24．5
B、Destination MAC: 0011．43da．2c98
Source MAC: 00b0．d0ef．5f6a
Destination IP: 192．168．60．5
Source IP: 192．168．24．5
C、Destination MAC: 0011．43da．2c98
Source MAC: 0070．0e8f．088a
Destination IP: 192．168．60．5
Source IP: 192．168．60．1
D、Destination MAC: 0011．43da．2c98
Source MAC: 0070．0e97．af4e
Destination IP: 192．168．60．5
Source IP: 192．168．60．2
答案A
解析 我们来看一下包发送的过程：Host A发送的：source ip: 192．168．24．5, destination ip: 192．168．60．5             Source mac:00b0．doef．5f6a , destination mac: 0007．0e56．ab2eSwitch1收到后经过查找mac table,不做任何修改发往 Router 1Router 1 发送的：source ip 192．168．24．5 destination ip : 192．168．60．5    Source mac : 0007．0e8f．088a , destination mac:0011．43da．2c98
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