20+ practice questions focused on Qos — one of the most tested topics on the ENCOR 350-401 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Qos PracticeDrag and drop the steps of QoS policing with two-rate three-color marker (RFC 2698) into the correct order, from first to last.
Explanation: First, configure the police command with cir, pir, and conform, exceed, violate actions. Then, apply the policy to the interface. The marker uses CIR and PIR to assign colors.
Drag and drop the steps of BGP graceful restart negotiation steps into the correct order, from first to last.
Explanation: Graceful restart begins with the restarting router sending an OPEN message with the graceful restart capability, followed by the peer acknowledging, then the restarting router marking routes as stale, and finally the peer sending End-of-RIB markers.
Drag and drop the steps of traffic shaping vs policing configuration steps into the correct order, from first to last.
Explanation: First, identify the traffic to be shaped or policed using a class-map. Then configure the policy-map with either shape or police command. Apply the service-policy in the appropriate direction. For shaping, the router buffers excess traffic; for policing, it drops or re-marks. Finally, verify using show policy-map interface.
Drag and drop each QoS model on the left to its matching characteristic on the right.
Explanation: IntServ uses RSVP for per-flow signaling, DiffServ uses DSCP marking for per-hop behavior, Best Effort provides no guarantees, IntServ requires state in routers, and DiffServ scales well for large networks.
Drag and drop each DSCP value on the left to its matching Per-Hop Behavior (PHB) on the right.
Explanation: DSCP values map to specific PHBs: EF is for expedited forwarding, AF41 is Assured Forwarding class 4 low drop, CS3 is class selector 3, AF21 is Assured Forwarding class 2 medium drop, and BE (0) is best-effort.
+15 more Qos questions available
Practice all Qos questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Qos. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Qos questions on the 350-401 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Qos is tested as part of the ENCOR 350-401 blueprint. Practicing with targeted Qos questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 350-401 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Qos is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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