Your company needs to prioritize VoIP traffic over general web traffic using QoS. What is the best way to classify VoIP packets?
Correct Answer: A
Detailed Explanation: Quality of Service (QoS) is used to ensure important traffic, like voice and video, receives priority over less critical traffic like email or web browsing. DSCP (Differentiated Services Code Point) is a 6-bit field in the IP header that classifies traffic into different priority levels. Expedited Forwarding (EF - DSCP 46) is the best marking for VoIP traffic because it guarantees low delay, low jitter, and low packet loss. The correct configuration for marking VoIP traffic with DSCP EF: class-map VoIP match protocol rtp policy-map QoS class VoIP set dscp ef Why Other Options Are Incorrect? B (Incorrect): VoIP should be assigned to a high-priority queue, not the lowest. C (Incorrect): WFQ helps distribute bandwidth but does not explicitly prioritize VoIP. D (Incorrect): DSCP BE (Best Effort) does not provide QoS guarantees for VoIP.
This CCNA practice question helps students prepare for Cisco networking certification exams by testing knowledge of network fundamentals, routing, switching, and network security concepts.