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What is the main difference between the Burstable and Guaranteed QoS classes in Kubernetes?

easy📝 Conceptual Q2 of 15
Kubernetes - Resource Management
What is the main difference between the Burstable and Guaranteed QoS classes in Kubernetes?
ABurstable pods have equal resource requests and limits; Guaranteed pods do not
BGuaranteed pods have no resource limits; Burstable pods have limits only
CGuaranteed pods have equal resource requests and limits; Burstable pods have requests less than limits
DBurstable pods have no resource requests; Guaranteed pods have requests only
Step-by-Step Solution
Solution:
  1. Step 1: Recall resource request and limit definitions

    Requests are minimum guaranteed resources; limits are maximum allowed resources.
  2. Step 2: Compare Burstable and Guaranteed classes

    Guaranteed requires requests and limits to be equal for all resources; Burstable has requests less than limits or only requests.
  3. Final Answer:

    Guaranteed pods have equal resource requests and limits; Burstable pods have requests less than limits -> Option C
  4. Quick Check:

    Guaranteed = requests equal limits; Burstable = requests less than limits [OK]
Quick Trick: Guaranteed means requests equal limits; Burstable means requests < limits [OK]
Common Mistakes:
  • Mixing up which class requires equal requests and limits
  • Assuming Burstable has no requests
  • Confusing limits with requests

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