What does SIP stand for?

What does SIP stand for?

• A. Session Initiation Protocol
• B. Secure Internet Protocol
• C. Session Internal Protocol
• D. Signaling Internet Protocol

Answer: (A)

SIP stands for Session Initiation Protocol, a signaling protocol used to start, modify, and terminate multimedia sessions such as voice and video calls over IP networks. It operates at the application layer and handles tasks like locating users, establishing who is in a session, negotiating media capabilities, and signaling call setup and teardown. The actual media (voice or video) is typically carried separately, often using RTP, once SIP has established the session. SIP messages are text-based and include requests like INVITE, ACK, and BYE to manage the session lifecycle. This makes it the correct meaning for SIP. The other options refer to different concepts (for example, IPsec for securing IP traffic or a nonstandard “Session Internal Protocol”), which don’t describe SIP’s role in initiating and managing multimedia sessions.

SIP stands for Session Initiation Protocol, a signaling protocol used to start, modify, and terminate multimedia sessions such as voice and video calls over IP networks. It operates at the application layer and handles tasks like locating users, establishing who is in a session, negotiating media capabilities, and signaling call setup and teardown. The actual media (voice or video) is typically carried separately, often using RTP, once SIP has established the session. SIP messages are text-based and include requests like INVITE, ACK, and BYE to manage the session lifecycle. This makes it the correct meaning for SIP. The other options refer to different concepts (for example, IPsec for securing IP traffic or a nonstandard “Session Internal Protocol”), which don’t describe SIP’s role in initiating and managing multimedia sessions.