A packet is to be encapsulated inside an MPLS tunnel which consists of two MPLS headers at the first network egress.
Which of the MPLS EXP fields will be marked?
A . The EXP field in the bottom MPLS header will be marked.
B . The EXP field in both the top and bottom MPLS headers will be marked.
C . For Layer 2 services, the top MPLS header will be marked; for Layer 3 services, the bottom MPLS header will be marked.
D . The EXP field in the top MPLS header will be marked.
E . Neither the top nor the bottom EXP field will be marked since EXP remarking can only be done on the network ingress.
Answer: B
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