At which layer of the OSI model do TCP and UDP operate?

Correct option is B

TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) operate at the Transport Layer of the OSI model, responsible for end-to-end communication, error detection, and data segmentation.
Important Key Points:
1. TCP ensures reliable data transmission through acknowledgment and retransmission.
2. UDP is faster but doesn’t guarantee delivery, making it ideal for real-time applications.
3. The Transport Layer ensures data integrity and proper sequencing.
Knowledge Booster:
· Application Layer: Handles end-user processes (e.g., HTTP, FTP).
· Network Layer: Handles routing and addressing (e.g., IP).
· Data Link Layer: Handles physical addressing and error detection in frames.
· Session Layer: Manages connections and sessions.