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What does the imp-null tag represent in the MPLS VPN cloud?
Refer to the exhibit.
What does the imp-null tag represent in the MPLS VPN cloud?
A . Include the EXP bit
B . Exclude the EXP bit
C . Impose the label
D . Pop the label
Answer: D
Explanation:
The “imp-null” (implicit null) tag instructs the upstream router to pop the tag entry off the tag stack before forwarding the packet.
Note: pop means “remove the top MPLS label”
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