Which WAN technology is designed to work with a variety of commonly used layer-2 protocols and is sometimes called a layer-2.5 technology because it inserts a 4-byte header that contains its own information between the layer-2 frame and the layer-3 IP packet?.
A)Ethernet
B)TCP
C)MPLS
D)IRoute
E)T1

Question

Quizplus · Accepted Answer

The WAN technology described in the question is MPLS (Multi-Protocol Label Switching). It is designed to work with multiple layer-2 protocols, including Ethernet, and inserts a 4-byte header called a label between the layer-2 frame and the layer-3 IP packet. This label is used to efficiently route traffic through the network.

Which WAN Technology Is Designed to Work with a Variety