Which additional feature does MPLS DiffServ tunneling support?

Which additional feature does MPLS DiffServ tunneling support?
A . matching EXP and DSCP values
B . PHB layer management
C . using GRE tunnels to hide markings
D . interaction between MPLS and IGP

View Answer

Answer: B

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_diffserv/configuration/15-mt/mp-te­diffserv-15-mt-book/mp-diffserv-tun-mode.html