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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