CCNA™ (200-301) WAN Practice Questions

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Q1: Cisco IOS supports MPPC (Microsoft Point-to-Point Compression algorithm) on one of the following encapsulation types. Choose the correct one.

A. HDLC

B. LAPB

C. PPP

D. Frame-Relay

Correct Answer: C

Explanation:

Compression algorithms supported by Cisco IOS are:

Encapsulation Type            Compression type supported by Cisco IOS
HDLC                                     STAC
LAPB                                     STAC, Predictor
PPP                                      STAC, Predictor, MPPC
Frame-Relay                          STAC, FRF.9

PPP is supported by STAC, Predictor, and MPPC. Compression algorithms supported by Frame-Relay for payload compression are STAC, and FRF.9.

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