Which protocol requires the server to save status and session information?

• A. Stateful Protocol
• B. Stateless Protocol
• C. Hybrid Protocol
• D. Sessionless Protocol

Answer: (A)

Maintaining session state on the server is a hallmark of a stateful protocol. In a stateful interaction, the server remembers who you are, what you did previously, and where you are in a multi-step process. That stored context lets the server interpret each new message correctly and continue the session without requiring the client to resend all previous information. This persistence is what enables features like login status, ongoing transactions, and personalized interactions.

In contrast, a stateless protocol treats every request as independent, with no reliance on past interactions. The server doesn’t retain session data between requests, which simplifies scaling but makes it harder to implement ongoing sessions unless additional mechanisms (like cookies or tokens) introduce client-side state. The other terms listed aren’t standard for this concept, reinforcing that the need to save and recall session information points to a stateful protocol.