EMERGING TRENDS IN SOFTWARE ENGINEERING
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: -PAP, or password authentication protocol, is a point-to-point protocol (PPP) authentication method that uses passwords to validate users. It is an internet standard (RFC 1334), password-based authentication protocol. Using PAP, data is not encrypted.
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.
Detailed explanation-4: -Password Authentication Protocol, or PAP, and Challenge Handshake Authentication Protocol, or CHAP, are both used to authenticate PPP sessions and can be used with many VPNs. PAP works like a standard login procedure. The remote system authenticates itself by using a static username and password combination.