200-901 Application Deployment and Security Practice Question
A CI/CD pipeline is configured to build a Docker image, run unit tests, and push the image to a registry. To ensure that only successfully tested images are pushed, which stage order is correct?
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
✓
Build image -> Run tests -> Push image
The correct order is: build the image, run tests, then push only if tests pass. Pushing before tests could push a broken image.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Run tests -> Build image -> Push image
Why it's wrong here
The image must be built before testing; tests may need the built artifact.
- ✗
Build image -> Push image -> Run tests
Why it's wrong here
Tests should run before pushing to avoid pushing a faulty image.
- ✗
Push image -> Build image -> Run tests
Why it's wrong here
Pushing before building is impossible; this order is invalid.
- ✓
Build image -> Run tests -> Push image
Why this is correct
Build first, then test, then push only if tests pass.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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