Alcatel-Lucent NRS I Composite Exam — Question 1

To transmit its segments of data across the network TCP uses the services of which layer?

Answer options

• A. Application Layer.
• B. Transport Layer.
• C. IP Layer.
• D. Data Link Layer

Correct answer: C

Explanation

The correct answer is C, as TCP operates at the Transport Layer, which is responsible for segmenting data for transmission. The Application Layer (A) deals with high-level protocols, while the IP Layer (B) is responsible for routing packets, and the Data Link Layer (D) focuses on node-to-node data transfer.