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CCNA FAQ: Point-to-Point WANs

March 26, 2020 by Marques Brownlee

CCNA FAQ: Point-to-Point WANs (Wide Area Network Connections) Question: Which of the following PPP authentication protocols authenticates a device on the other end of a link without sending any password information in clear text? a. MD5 b. PAP c. CHAP d. DES Answer: C. Of the possible answers, only PAP and CHAP are PPP authentication protocols. PAP sends the password as … [Read more...]

Filed Under: Cisco Tagged With: CCNA FAQ, Cisco HDLC, Configuring PPP, Point-to-Point WANs, The WAN Physical Layer, Troubleshooting PPP, Verifiing PPP, WAN Connection Types, WAN Data Link Encapsulations, WANs, Wide Area Network Connections

WAN Data Link Encapsulations

March 8, 2020 by Marques Brownlee

WAN Data Link Encapsulations After you have the Physical layer plugged in, you must move up to the Data Link WAN encapsulation. Just as with the Physical layer, a variety of standards are available for the data link connections. However, the choice of the Data Link protocol is usually much simpler. As long as your WAN connection supports the Data Link encapsulation you use and … [Read more...]

Filed Under: CCNA Tagged With: Asynchronous Transfer Mode (ATM), Balanced (LAPB), Cisco HDLC, Cisco High-Level Data Link Control (HDLC), Frame Relay, Point-to-Point Protocol (PPP), PPP over Ethernet (PPPoE) and PPP over ATM (PPPoA), Serial Line Internet Protocol (SLIP), WAN Data Link Encapsulations, X.25 Link Access Procedure

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