EMERGING TRENDS IN COMPUTING
CLOUD COMPUTING
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
PAP
|
|
|
CHAP
|
|
|
RADIUS
|
|
|
EAP
|
Detailed explanation-1: -EAP is a new PPP authentication protocol that allows for an arbitrary authentication method. Once the user is connected over PPP, NAS server immediately collects the user credentials and sends them over to a RADIUS or Domain Controller for verification.
Detailed explanation-2: -CHAP (Challenge-Handshake Authentication Protocol) is a challenge and response authentication method that Point-to-Point Protocol (PPP) servers use to verify the identity of a remote user. CHAP authentication begins after the remote user initiates a PPP link.
Detailed explanation-3: -CHAP is a stronger authentication method than PAP, because the secret is not transmitted over the link, and because it provides protection against repeated attacks during the life of the link. As a result, if both PAP and CHAP authentication are enabled, CHAP authentication is always performed first.