200-901 Application Deployment and Security Practice Question
This 200-901 practice question tests your understanding of application deployment and security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
In a Kubernetes deployment, the container image pull policy is set to "Always". This causes performance issues during rollouts because the image registry is slow. What is the best practice to reduce pull time while maintaining security?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Clue: "always"
Why it matters: Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set pullPolicy to "IfNotPresent" for stable releases and use image tags like v1.2.3.
Option A is correct because setting `pullPolicy` to `IfNotPresent` for stable releases (using immutable tags like `v1.2.3`) avoids unnecessary image pulls from a slow registry when the image already exists on the node. This reduces rollout time while maintaining security by ensuring that only explicitly versioned, verified images are used, preventing accidental use of stale or untagged images.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Set pullPolicy to "IfNotPresent" for stable releases and use image tags like v1.2.3.
Why this is correct
Optimizes pulls and uses versioned tags for consistency.
Clue confirmation
The clue words "best", "always" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the ":latest" tag to ensure always fresh images.
Why it's wrong here
Unpredictable and can cause version mismatches.
✗
Set pullPolicy to "Never" and pre-pull images on nodes.
Why it's wrong here
Can lead to outdated images without automatic updates.
✗
Disable image verification to speed up pulls.
Why it's wrong here
Compromises security.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that `:latest` is a safe, always-fresh choice, but the trap here is that `:latest` combined with `Always` causes unnecessary pulls and version ambiguity, whereas immutable tags with `IfNotPresent` balance performance and security.
Detailed technical explanation
How to think about this question
Under the hood, the kubelet checks the `imagePullPolicy` during Pod creation: `Always` forces a registry call even if the image exists locally, while `IfNotPresent` only pulls when the image is missing. Using immutable tags (e.g., `v1.2.3`) ensures that the image digest is fixed, so `IfNotPresent` safely skips pulls for already-cached images. In a real-world scenario, a CI/CD pipeline that tags images with Git commit hashes (e.g., `sha-abc123`) combined with `IfNotPresent` can dramatically speed up rollouts across a cluster with many nodes.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 200-901 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Application Deployment and Security — This question tests Application Deployment and Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set pullPolicy to "IfNotPresent" for stable releases and use image tags like v1.2.3. — Option A is correct because setting `pullPolicy` to `IfNotPresent` for stable releases (using immutable tags like `v1.2.3`) avoids unnecessary image pulls from a slow registry when the image already exists on the node. This reduces rollout time while maintaining security by ensuring that only explicitly versioned, verified images are used, preventing accidental use of stale or untagged images.
What should I do if I get this 200-901 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best", "always". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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