- A
apparmor.security.beta.kubernetes.io/container-name: "k8s-apparmor-example-deny-write"
Why wrong: The annotation prefix is 'container.apparmor.security.beta.kubernetes.io', not 'apparmor.security.beta.kubernetes.io'.
- B
container.apparmor.security.beta.kubernetes.io/pod-name: "k8s-apparmor-example-deny-write"
Why wrong: The annotation key must specify the container name, not the pod name.
- C
container.apparmor.security.beta.kubernetes.io/container-name: "localhost/k8s-apparmor-example-deny-write"
This annotation correctly references the local profile using the 'localhost/' prefix.
- D
container.apparmor.security.beta.kubernetes.io/container-name: "k8s-apparmor-example-deny-write"
Why wrong: This lacks the 'localhost/' prefix. Without it, Kubernetes may interpret it as a different profile type.
CKS System Hardening Practice Question
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.
A security engineer needs to apply a custom AppArmor profile to a pod. The profile is named 'k8s-apparmor-example-deny-write' and is loaded on the node. Which annotation should be added to the pod's metadata to enforce this profile?
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
container.apparmor.security.beta.kubernetes.io/container-name: "localhost/k8s-apparmor-example-deny-write"
Option C is correct because the AppArmor annotation for a container follows the format `container.apparmor.security.beta.kubernetes.io/<container-name>` and the profile name must be prefixed with `localhost/` when referencing a profile loaded on the node. The annotation value `"localhost/k8s-apparmor-example-deny-write"` correctly specifies the node-local profile.
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.
- ✗
apparmor.security.beta.kubernetes.io/container-name: "k8s-apparmor-example-deny-write"
Why it's wrong here
The annotation prefix is 'container.apparmor.security.beta.kubernetes.io', not 'apparmor.security.beta.kubernetes.io'.
- ✗
container.apparmor.security.beta.kubernetes.io/pod-name: "k8s-apparmor-example-deny-write"
Why it's wrong here
The annotation key must specify the container name, not the pod name.
- ✓
container.apparmor.security.beta.kubernetes.io/container-name: "localhost/k8s-apparmor-example-deny-write"
Why this is correct
This annotation correctly references the local profile using the 'localhost/' prefix.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
container.apparmor.security.beta.kubernetes.io/container-name: "k8s-apparmor-example-deny-write"
Why it's wrong here
This lacks the 'localhost/' prefix. Without it, Kubernetes may interpret it as a different profile type.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the requirement for the `localhost/` prefix in the annotation value, causing candidates to pick Option D which omits it, or Option A which uses the wrong annotation key format.
Detailed technical explanation
How to think about this question
AppArmor profiles are enforced per container via a pod annotation; the annotation key must match the container name exactly. The `localhost/` prefix tells Kubernetes that the profile is loaded on the node (in `/etc/apparmor.d/`), as opposed to a runtime default or unconfined state. This mechanism is part of the `security.beta.kubernetes.io` API group and is available in Kubernetes v1.4+.
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 security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
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.
- →
System Hardening — study guide chapter
Learn the concepts, then practise the questions
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Certified Kubernetes Security Specialist CKS study guide
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FAQ
Questions learners often ask
What does this CKS question test?
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/container-name: "localhost/k8s-apparmor-example-deny-write" — Option C is correct because the AppArmor annotation for a container follows the format `container.apparmor.security.beta.kubernetes.io/<container-name>` and the profile name must be prefixed with `localhost/` when referencing a profile loaded on the node. The annotation value `"localhost/k8s-apparmor-example-deny-write"` correctly specifies the node-local profile.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 30, 2026
This CKS practice question is part of Courseiva's free CNCF certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CKS exam.
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