Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 868

Which QoS feature uses the IP Precedence bits in the ToS field of the IP packet header to partition traffic into different priority levels?

Answer options

• A. marking
• B. shaping
• C. policing
• D. classification

Correct answer: A

Explanation

The correct answer is A, marking, as it specifically refers to the process of setting the IP Precedence bits to indicate the priority of packets. Shaping (B) is about controlling the traffic flow to comply with a specified rate, policing (C) involves monitoring traffic rates and enforcing limits, while classification (D) is the broader process of identifying and categorizing traffic but does not specifically refer to the use of IP Precedence bits.