Which protocol is abbreviated as PPP in networking?

The abbreviation PPP in networking refers to Point-to-Point Protocol. This protocol is crucial for establishing direct connections between two networking nodes. It is widely used for connecting remote clients to the internet through dial-up connections, as well as for point-to-point links in various types of network configurations.

Point-to-Point Protocol is significant because it facilitates the encapsulation of multiple protocols over a single link, allowing for the transmission of both IPv4 and IPv6 packets. Additionally, it supports features such as error detection, link configuration, and the ability to establish and maintain a connection, which are vital for effective communication between two devices.

The other options refer to networking concepts but do not accurately represent the widely accepted definition or functionality associated with the abbreviation PPP.