Discussion
Which fields are contained within an IEEE Ethernet frame header?
1. Source and destination MAC address
2. Source and destination network address
3. Source and destination MAC address and source and destination network address
4. FCS field
Answer: A
Correct answer: 1 and 4
An Ethernet frame header carries the source and destination MAC addresses; network-layer addresses live in the IP header inside the frame, where Ethernet neither reads nor uses them.
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