CISSP – Information Systems Security Architecture Professional (ISSAP) — Question 8

Which of the following protocols supports encapsulation of encrypted packets in secure wrappers that can be transmitted over a TCP/IP connection?

Answer options

• A. PPTP
• B. UDP
• C. IPSec
• D. PAP

Correct answer: A

Explanation

PPTP (Point-to-Point Tunneling Protocol) is specifically designed to encapsulate encrypted packets, making it suitable for secure communications over TCP/IP. In contrast, UDP (User Datagram Protocol) is a transport protocol that does not provide encryption or encapsulation features. IPSec is also a security protocol but is typically used for securing IP communications rather than encapsulating packets in a TCP/IP context, and PAP (Password Authentication Protocol) is primarily used for authentication, not for encapsulating packets.