Which statement about MPLS is true?

Which statement about MPLS is true?
A . It operates in Layer 1.
B . It operates between Layer 2 and Layer 3.
C . It operates in Layer 3.
D . it operates in Layer 2.

View Answer

Answer: B

Explanation:

MPLS belongs to the family of packet-switched networks. MPLS operates at a layer that is generally considered to lie between traditional definitions of OSI Layer 2 (data link layer) and Layer 3 (network layer), and thus is often referred to as a layer 2.5 protocol.