KCNA Cloud Native Architecture Practice Question
In the context of resiliency patterns, which pattern is designed to prevent a cascade of failures by isolating each component so that a failure in one component does not affect others?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Bulkhead
The bulkhead pattern isolates resources (e.g., thread pools, connections) so that a failure in one part of the system doesn't bring down other parts. Circuit breaker is for handling failures of external calls, not isolation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Retry
Why it's wrong here
Retry is about retrying failed operations, not isolation.
- ✗
Circuit breaker
Why it's wrong here
Circuit breaker is used to detect failures and prevent calls to a failing service, but it does not isolate components.
- ✗
Timeout
Why it's wrong here
Timeout sets a maximum wait time for a response, but does not isolate components.
- ✓
Bulkhead
Why this is correct
Bulkhead isolates components into separate pools so that a failure in one does not affect others.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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