Palo Alto Networks (PANW) Certified Cybersecurity Entry-level Technician (PCCET) Practice Exam

What is the authentication method that uses usernames and passwords?

1. PAP

2. CHAP

3. MS-CHAP

4. SAP

The correct answer is: PAP

The authentication method that uses usernames and passwords is Point-to-Point Authentication Protocol (PAP). This protocol operates over PPP (Point-to-Point Protocol) and involves the transmission of usernames and passwords in plaintext. When a client attempts to establish a connection, it sends its credentials to the server for verification. If the server recognizes the credentials, access is granted. PAP is a straightforward and simple method for authentication. However, its main disadvantage is the lack of encryption, making it susceptible to eavesdropping and various attack vectors, such as man-in-the-middle attacks. This plaintext transmission can pose significant security risks in environments requiring robust security measures. Other options like CHAP (Challenge Handshake Authentication Protocol) and MS-CHAP (Microsoft Challenge Handshake Authentication Protocol) incorporate a challenge-response mechanism that enhances security by not sending credentials in plaintext. They are designed to be more secure than PAP by hashing the password before transmission. SAP, or Service Advertising Protocol, is not relevant to authentication methods involving usernames and passwords, as it is used for managing service discovery in networks.