CCNA 4 exploration 4 Accessing the WAN chapter 1 exam question?

Question

1

Which statement about WAN protocols is correct?

ATM differs from other WAN protocols in that it uses variably sized packets.

Most WAN protocols use HDLC or a variant of HDLC as a framing mechanism.

The frame header consists of the frame check sequence and cyclic redundancy check.

ISDN differs from Frame Relay, HDLC, and ATM in that it is packet-switched rather than circuit-switched technology.

2Which networking device is typically used to concentrate the dial-in and dial-out traffic of

multiple users to and from a network?

core router

access server

Frame Relay switch

ATM switch

3

What three terms are associated with ISDN PRI? (Choose three.)

DLCI

circuit switching

packet switching

data bearer channels

switched virtual circuits

time-division multiplexing

Hey there where can i get the answers for CCNA 4 exploration 4, chapter exams from the internet?

thanks

Answer 1

!, Most WAN protocols use HDLC or a variant of HDLC as a framing mechanism.

2, access server

3, circuit switching, data bearer channels, time-division multiplexing.

If you study, you will have the answers.