The Transport layer of the TCP/IP stack is responsible for the reliable transmission of data between

hosts.

Protocols: Includes TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).

Reliable Data Delivery: TCP ensures data integrity and order through sequencing, error checking, and

acknowledgment.

Flow Control and Congestion Handling: Uses mechanisms like windowing to manage data flow

efficiently.

Connection-Oriented Communication: Establishes a session between sender and receiver for reliable

data transfer.

Other options analysis:

A . Link: Deals with physical connectivity and media access.

B . Internet: Handles logical addressing and routing.

C . Application: Facilitates user interactions and application-specific protocols (like HTTP, FTP).

CCOA Official Review Manual, 1st Edition Reference:

Chapter 4: Network Protocols and Layers: Details the role of the Transport layer in reliable data

transmission.

Chapter 6: TCP/IP Protocol Suite: Explains the functions of each layer.