Which term describes messaging where each packet is sent independently without a pre-established connection?

Which term describes messaging where each packet is sent independently without a pre-established connection?

• A. Connectionless messaging
• B. Connection oriented
• C. Stateful messaging
• D. Synchronous messaging

Answer: (A)

Sending each packet independently without a pre-established connection is called connectionless messaging. In this mode, there’s no setup handshake or ongoing session kept between the communicating parties; every datagram is treated as a separate unit, potentially taking its own route through the network and without guarantees about order, reliability, or delivery. This is the hallmark of protocols like UDP, where the transport layer does not maintain state or ensure that all pieces arrive in sequence. In contrast, a connection-oriented approach involves establishing a session before data transfer, so the endpoints maintain state about the connection and can provide reliability and ordering. Stateful messaging implies keeping track of information across messages within a session, and synchronous messaging refers to timing semantics of requests and responses, not the existence of a connection itself.

Sending each packet independently without a pre-established connection is called connectionless messaging. In this mode, there’s no setup handshake or ongoing session kept between the communicating parties; every datagram is treated as a separate unit, potentially taking its own route through the network and without guarantees about order, reliability, or delivery. This is the hallmark of protocols like UDP, where the transport layer does not maintain state or ensure that all pieces arrive in sequence.

In contrast, a connection-oriented approach involves establishing a session before data transfer, so the endpoints maintain state about the connection and can provide reliability and ordering. Stateful messaging implies keeping track of information across messages within a session, and synchronous messaging refers to timing semantics of requests and responses, not the existence of a connection itself.