Which statement is CORRECT on the connection-orientation/reliability of communications?
A) Connectionless services have explicit openings and closings.
B) Almost all protocols currently in use are connection-oriented and reliable in nature.
C) Reliable protocols resend lost or damaged messages.
D) TCP is the only unreliable protocol.
E) TCP is a connection-less protocol that does not need handshaking.

Question

Quizplus · Accepted Answer

Reliable protocols, such as TCP, have mechanisms to detect and resent lost or damaged messages. Option A is incorrect because connectionless services do not have opening and closing mechanisms. Option B is incorrect because there are some protocols that are connectionless and/or unreliable. Option D is incorrect because TCP is a reliable protocol, not an unreliable one. Option E is incorrect because TCP is a connection-oriented protocol that uses handshaking.

Which Statement Is CORRECT on the Connection-Orientation/reliability of Communications