CISCO CCNA Exam – Q255

Which two options are valid WAN connectivity methods? (Choose two.)

A. PPP
B. WAP
C. DSL
D. L2TPv3
E. Ethernet

Correct Answers: A, C

Explanation:
The Point-to-Point Protocol (PPP) provides a standard method for transporting multi-protocol datagrams over point-to-point links. PPP was originally emerged as an encapsulation protocol for transporting IP traffic between two peers. It is a data link layer protocol used for WAN connections.
DSL is also considered a WAN connection, as it can be used to connect networks, typically when used with VPN technology.

CISCO CCNA Exam – Q52

Refer to the exhibit.
CISCO CCNA Exam – Q52

Which WAN protocol is being used?

A. ATM
B. HDLC
C. Frame Relay
D. PPP

Correct Answer: C

Explanation:
This question is to examine the show int command.
According to the information provided in the exhibit, we can know that the data link protocol used in this network is the Frame Relay protocol.
“LMI enq sent…”