Discussion
Which of the following provide inter-switch VLAN communication?
1.ISL
2.VTP
3.802.1Q
4.802.3Z
Answer: B
Correct answer: 1 and 3
ISL and 802.1Q are the two trunk encapsulations, and each tags a frame so that the receiving switch knows which VLAN it belongs to - that tagging is what allows one physical link to carry traffic for many VLANs. VTP distributes VLAN definitions rather than carrying traffic, and 802.3z is Gigabit Ethernet over fibre.
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