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.
Answer:B
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.
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.