What are two benefits when implementing class of service? (Choose two.)
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Reference / correct answer:
Traffic congestion can be managed.
Latency-sensitive traffic can be prioritized
Class of Service (CoS) helps you manage congestion by classifying traffic and applying queuing/scheduling so important traffic gets appropriate treatment during contention. It also allows you to prioritize latency-sensitive traffic (for example, voice/video) to reduce delay and jitter. CoS does not make the network inherently faster, and it cannot eliminate congestion; it only manages how traffic is handled when congestion occurs.
References: https://www.juniper.net/documentation/us/en/software/junos/cos/cos/topics/concept/cos-class-of-service-overview.html