300-420 ENSLD Practice Questions: Network Services Design and Automation

300-420 ENSLD: Network Services Design and Automation

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An enterprise is redesigning QoS for voice, video conferencing, transactional applications, and bulk backup traffic across multiple WAN sites. The design must scale across hundreds of routers without maintaining per-flow reservation state in the core. Which QoS architecture is the best design choice?

Select one option.

Integrated Services with RSVP reservations for every real-time flow
Best-effort forwarding with no traffic classification
Differentiated Services using classification, marking, queuing, shaping, and policing at appropriate trust boundaries
Application-layer throttling only, with no network-layer QoS policy
Static bandwidth reservation per application on every WAN interface

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