200-901 Application Deployment and Security Practice Question
This 200-901 practice question tests your understanding of application deployment and security. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Which THREE are valid ways to expose ConfigMap data to a pod in Kubernetes?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
As environment variables
Option B is correct because Kubernetes allows ConfigMap data to be exposed as environment variables inside a pod using the `env` or `envFrom` field in the pod spec. This is a common method for injecting configuration into containers without modifying the container image.
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.
✗
As a Kubernetes Secret
Why it's wrong here
Secrets are a separate resource for sensitive data, not for ConfigMap.
✓
As environment variables
Why this is correct
You can use envFrom or valueFrom to expose as env vars.
Related concept
Read the scenario before looking for a memorised answer.
✗
As a container image label
Why it's wrong here
Labels are metadata, not for runtime configuration.
✓
As a volume mounted file
Why this is correct
ConfigMap can be mounted as a volume to make files available.
Related concept
Read the scenario before looking for a memorised answer.
✓
As a command-line argument
Why this is correct
You can use $(VAR_NAME) syntax in command args if env vars are set from ConfigMap.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between ConfigMaps and Secrets, and the trap here is that candidates may confuse the purpose of Secrets (sensitive data) with ConfigMaps (non-sensitive data), or incorrectly assume that container image labels can be dynamically injected from runtime objects.
Detailed technical explanation
How to think about this question
Under the hood, when ConfigMap data is exposed as environment variables, the kubelet reads the ConfigMap from the API server and sets the corresponding environment variables in the container's process namespace before the entrypoint runs. A subtle behavior is that if a ConfigMap is updated, environment variables are not automatically refreshed—they are set only at pod creation, unlike volume mounts which can be updated via a sync mechanism (e.g., with a 60-second default sync period).
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: As environment variables — Option B is correct because Kubernetes allows ConfigMap data to be exposed as environment variables inside a pod using the `env` or `envFrom` field in the pod spec. This is a common method for injecting configuration into containers without modifying the container image.
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.
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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