This CKS practice question tests your understanding of system hardening. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An administrator wants to enforce a custom AppArmor profile named 'k8s-apparmor-example' on a pod. The profile has been loaded on the node. Which annotation should be added to the pod's metadata to apply this profile?
Option A is correct because the annotation format for applying an AppArmor profile to a container in a pod is `container.apparmor.security.beta.kubernetes.io/<container_name>`. The value `localhost/k8s-apparmor-example` specifies that the profile named `k8s-apparmor-example` is loaded locally on the node. This annotation enforces the profile on the container named 'nginx'.
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.
The value should be 'localhost/<profile_name>', not just the profile name.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the exact annotation syntax, specifically that the key must include `container.` and the container name, and the value must include `localhost/` for a custom profile, leading candidates to confuse the pod-level annotation with the container-level one.
Detailed technical explanation
How to think about this question
AppArmor profiles are enforced via Kubernetes annotations using the key format `container.apparmor.security.beta.kubernetes.io/<container_name>`. The value must be either `localhost/<profile_name>` for a profile loaded on the node, `runtime/default` to use the runtime's default profile, or `unconfined` to disable AppArmor. The profile must be pre-loaded on the node (e.g., via `apparmor_parser`) before the pod is scheduled, otherwise the pod will be rejected. This annotation is beta and may be replaced by a future field in the Pod Security Context.
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 CKS 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKS question in full detail.
System Hardening — This question tests System Hardening — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: container.apparmor.security.beta.kubernetes.io/nginx: localhost/k8s-apparmor-example — Option A is correct because the annotation format for applying an AppArmor profile to a container in a pod is `container.apparmor.security.beta.kubernetes.io/<container_name>`. The value `localhost/k8s-apparmor-example` specifies that the profile named `k8s-apparmor-example` is loaded locally on the node. This annotation enforces the profile on the container named 'nginx'.
What should I do if I get this CKS 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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