Describe the Operation of QoS SONIC-DEPLOY Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A university uses Dell SONiC switches. The team wants to avoid global TCP synchronization, where multiple TCP flows ramp up and down together, causing throughput instability. Which congestion management mechanism should be configured?

   • AWRED with random early drop
   • BStrict priority scheduling
   • CPolicing all traffic to a fixed rate
   • DTail drop on the queue
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   What is the primary difference between policing and shaping in QoS?

   • APolicing is used on egress, while shaping is used on ingress
   • BPolicing changes the DSCP value, while shaping changes the 802.1p value
   • CPolicing buffers excess traffic, while shaping drops excess traffic
   • DPolicing drops excess traffic, while shaping buffers excess traffic
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   A university campus network uses Dell SONiC switches. The network team wants to limit video-streaming traffic (classified by DSCP AF41) to 200 Mbps per access switch uplink. They want excess packets to be dropped immediately rather than buffered, because the streaming application is tolerant of loss but sensitive to added latency. Which QoS action should the team configure on the uplink?

   • ASet the queue scheduling to strict priority for AF41
   • BApply a shaper that buffers traffic above 200 Mbps
   • CConfigure WRED with a threshold at 200 Mbps
   • DApply a policer that drops traffic exceeding 200 Mbps
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   In the context of Dell SONiC QoS, what is the scope of its operation?

   • AIt applies only to traffic destined for the switch CPU
   • BIt manages traffic only on a single physical port
   • CIt governs how packets are treated as they traverse the switch, including classification, queuing, and scheduling
   • DIt is used exclusively to configure access control lists (ACLs)
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A cloud provider runs a multi-tenant environment on Dell SONiC switches. A tenant's backup traffic is latency-tolerant and bulk, while their real-time analytics traffic is latency-sensitive. The provider wants to ensure that during congestion, the analytics traffic is not starved by the backup traffic. Which QoS approach should be used?

   • AClassify analytics into a strict-priority queue and backup into a WRR queue
   • BUse tail drop on all queues
   • CClassify backup into a strict-priority queue and analytics into a WRR queue
   • DApply a policer to analytics traffic only
   Reveal Solution Discussion Select an answer first