Which of the following is NOT a security framework mentioned in the material?

The correct choice identifies TCP as not being a security framework. TCP, or Transmission Control Protocol, is a fundamental protocol within the Internet Protocol Suite that is used for establishing and maintaining a reliable, ordered, and error-checked delivery of data between applications running on hosts communicating over an IP network. It operates at the transport layer of the OSI model and is centered around data transmission, rather than focusing specifically on security.

In contrast, PAM (Pluggable Authentication Module) provides a framework for integrating multiple authentication technologies across various applications, enhancing security by allowing different modules to manage user authentication in a configurable manner. DTLS (Datagram Transport Layer Security) is designed to provide security for datagram-based applications, securing communications similar to SSL (Secure Sockets Layer), which was traditionally used to secure HTTP traffic and provide encrypted connections over computer networks. Both PAM, DTLS, and SSL all have a specific focus on securing data and managing authentication, differentiating them fundamentally from TCP, which does not have a direct role in security.