Alcatel-Lucent NRS II – IP/MPLS Services — Question 23

Which of the following statements about marking packets is TRUE?

Answer options

• A. Packets corresponding to a layer-2 service can be pre-marked on SAP-ingress.
• B. Packets corresponding to a layer-2 service can be pre-marked on network-ingress.
• C. Packets corresponding to a layer-3 service can be pre-marked on SAP-ingress.
• D. Packets corresponding to a layer-3 service can be pre-marked on network-ingress.

Correct answer: D

Explanation

The correct answer is D because layer-3 services are capable of being pre-marked at network-ingress, which is essential for proper routing and handling. Options A and B are incorrect as they incorrectly attribute pre-marking capabilities to layer-2 services. Option C is also incorrect since layer-3 services cannot be pre-marked at SAP-ingress.