Alcatel-Lucent NRS II – IP/MPLS Services — Question 9

Which of the statements about packet classification is TRUE?

Answer options

• A. It sets the destination IP address of the packet.
• B. It uses RVSP to inform other QoS capable routers how the packet should be treated.
• C. It sets the TOS, DSCP, EXP, or DOT1p field based on classification criteria.
• D. It can use a customer’s encapsulated data to determine a packet’s forwarding class.

Correct answer: C

Explanation

The correct answer is C because packet classification indeed involves setting fields like TOS, DSCP, EXP, or DOT1p based on specific criteria. Option A is incorrect as packet classification does not set the destination IP address. Option B is wrong since RVSP is not a standard protocol for informing QoS routers about packet treatment; it is actually RSVP (Resource Reservation Protocol). Option D is misleading as while encapsulated data can inform decisions, it is not a primary method for determining forwarding classes.