Which protocol is primarily responsible for ensuring reliable data delivery over a network?

Correct answer: TCP. TCP checks that data arrives complete and in order, and resends lost data.

Background: TCP stands for Transmission Control Protocol.

• HTTP: HTTP carries web pages.
• IP: IP handles addressing and routing.
• UDP: UDP is faster but does not guarantee delivery.

Did you know? TCP/IP together run the internet.

Memory trick: TCP = Trusted delivery.