Alcatel-Lucent NRS I Composite Exam — Question 11

Which of the following is a feature of Layer 3?

Answer options

• A. Provides an universal addressing scheme
• B. Ensures data is delivered across the Layer 2 network.
• C. Provides reliable data transfers.
• D. Provides a physical interface to the network.

Correct answer: A

Explanation

The correct answer, A, indicates that Layer 3 is responsible for addressing and routing packets across different networks. Options B and C pertain to Layer 2 functionality, focusing on data link layer operations, while D relates to the physical layer, which does not involve logical addressing.