Which two statements about MPLS are true? (Choose two)
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A. B. C. D. E.BD
MPLS (Multiprotocol Label Switching) is a protocol used to enhance the speed and efficiency of packet forwarding in networks. It operates at the OSI layer 2.5, between the network layer (Layer 3) and data link layer (Layer 2) in the network protocol stack.
The correct answers are B and D:
A. Incorrect. MPLS does not provide automatic authentication.
B. Correct. MPLS is capable of carrying multiple protocols, including IPv4 and IPv6. This means that MPLS can handle a variety of traffic types, making it a versatile networking solution.
C. Incorrect. MPLS encapsulates traffic in a label header, not an IPv4 header. This label header is used to direct packets through the network.
D. Correct. MPLS uses labels to separate and forward customer traffic. These labels are attached to packets as they enter the network and are used by the routers to forward the packets to their destination. The use of labels allows for faster and more efficient packet forwarding compared to traditional routing protocols.
E. Incorrect. 802.1q is a tagging protocol used in Ethernet networks to implement virtual LANs (VLANs). MPLS does not use 802.1q tagging to identify customer traffic. Instead, it uses label switching to direct traffic through the network.
In summary, MPLS is a versatile networking protocol capable of carrying multiple types of traffic, including IPv