What is the primary function of the Network News Transfer Protocol (NNTP)?

The primary function of the Network News Transfer Protocol (NNTP) is to distribute and retrieve Netnews articles. NNTP was specifically designed for the transport and management of Usenet news, which is a system that allows users to post and read messages organized in categories or newsgroups. With NNTP, clients can connect to servers, retrieve news articles, and post responses or new articles to the appropriate newsgroups. This protocol is essential for facilitating the exchange of information over the internet in a format conducive to discussions and updates related to various topics among users.

Options related to sending email, managing file transfers, or establishing virtual private networks focus on other protocols or services and do not pertain to the specific role of NNTP in news article distribution and retrieval.