QuestionQ33

Performance Optimization

Your customer requests a four-class LAN queuing model for QoS. Following best practices, match the PHB/DSCP values with the application types.

Drag & Drop
Best Effort and Scavenger
Bulk and Transactional Data
Multimedia Streaming
Real-Time Interactive
Explanation

Cisco QoS best-practice marking uses EF (DSCP 46) for real-time interactive traffic, AF31 (DSCP 26) for streaming multimedia, AF21 (DSCP 18) for transactional/bulk data, and DF (DSCP 0) for the lowest-priority best-effort/scavenger class.

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