CCDE: Cisco Certified Design Expert (Practical) — Question 229

Company XYZ is redesigning their QoS policy. Some of the applications used by the company are real-time applications. The QoS design must give these applications preference in terms of transmission. Which QoS strategy can be used to fulfill the requirement?

Answer options

• A. weighted random early detection
• B. weighted fair queuing
• C. first-in first-out
• D. low-latency queuing

Correct answer: D

Explanation

Low-latency queuing is specifically designed to prioritize real-time applications by reducing delays in packet transmission, making it the correct choice. The other options, such as weighted random early detection and weighted fair queuing, address congestion but do not prioritize real-time traffic as effectively. First-in first-out does not provide any prioritization and may lead to unacceptable delays for time-sensitive applications.