SafeOps Academy

Quiz: Chapter 07 (Resource Management & QoS)

Questions

  1. Why are requests/limits mandatory for production workloads?

  2. What QoS class do pods usually get when requests and limits are both set but not equal?

  3. What Kubernetes object enforces namespace-wide total resource caps?

  4. What Kubernetes object provides default/min/max resource values per container?

  5. Which statement is correct?

  • A) BestEffort pods are safest for critical APIs.
  • B) ResourceQuota helps prevent one namespace from exhausting cluster capacity.
  • C) OOMKilled means the container exceeded CPU limit.

  1. Why include ephemeral-storage requests/limits?

  2. Preferred response to repeated OOMKilled is:

  • A) remove limits
  • B) inspect memory profile, adjust requests/limits, verify with metrics
  • C) disable probes

  1. What is the risk of increasing quotas without capacity review?

  2. Which QoS class is obtained when CPU+memory requests equal limits for every container?

  3. Complete the guardrail:

  • A) scale first, investigate later
  • B) evidence first (metrics/events), then resource tuning
  • C) disable quotas in non-prod by default

Answer Key (Short)

  1. Predictability, fair scheduling, and controlled blast radius under pressure.
  2. Burstable.
  3. ResourceQuota.
  4. LimitRange.
  5. B
  6. To control disk pressure and avoid node instability from runaway writable layers/tmp.
  7. B
  8. Capacity oversubscription and cross-namespace instability.
  9. Guaranteed.
  10. B