Which of the following is NOT a feature of Transport Layer Security (TLS)?

The reason why the choice regarding the transfer of HTML files is considered correct is that Transport Layer Security (TLS) is a protocol designed to provide security for communications over a computer network. While TLS does enhance the security of data being transmitted, it does so for a wide range of data types beyond just HTML files. TLS primarily focuses on encryption, authentication, and integrity assurance for data being exchanged between parties.

Encryption of data means that the information being sent is encoded in such a way that only the intended recipient can decode it, ensuring confidentiality. Authentication involves confirming the identities of the parties involved in the communication, preventing impersonation or attacks. Data integrity assurance ensures that the data sent over the network has not been altered or tampered with during transmission.

The transfer of HTML files, however, is not a specific feature of TLS. HTML files can be transferred over various types of protocols such as HTTP or HTTPS, where HTTPS is the secure version that utilizes TLS for added security. Thus, the transfer of HTML files itself does not pertain to the core functions of TLS, making it the correct choice.