CCNP Voice FAQ: Classification, Marking, and NBAR Q1. Which of the following is not a valid classification traffic descriptor? A. Incoming interface B. Traffic path C. IP precedence or DSCP value D. Source or destination address Answer: B Q2. Which of the following is not considered a data link layer QoS marking field? A. CoS B. Frame Relay DE C. DSCP D. ATM … [Read more...]