Refer to the exhibit.
What does the imp-null tag represent in the MPLS VPN cloud?
A . Pop the label
B . Impose the label
C . Include the EXP bit
D . Exclude the EXP bit
Answer: A
Explanation:
The Dimp-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”