Which two services are used to transport Layer 2 frames across a packet-switched network? (Choose two.)
A. Frame Relay
B. ATM
C. AToM
D. L2TPv3
Which two services are used to transport Layer 2 frames across a packet-switched network?
Which two services are used to transport Layer 2 frames across a packet-switched network? (Choose two.)
A. Frame Relay
B. ATM
C. AToM
D. L2TPv3
This is a(nother) bad question.
I would take “packet-switched” network to mean “label switched”. Since L2TPv3 relies on IP transport, which might or might not be label switched, but only needs to be routed, then D is a possible answer.
L2TPv3 is often, but not always deployed over MPLS, so I think A and C are the best answers.