This CKAD practice question tests your understanding of application environment, configuration 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 of the following is a valid YAML snippet for a container that sets the seccomp profile to 'RuntimeDefault' in a PodSecurityContext?
securityContext: seccompProfile: type: RuntimeDefault
Correct. This sets the seccomp profile to RuntimeDefault.
securityContext: seccompProfile: profile: RuntimeDefault
Why wrong: There is no 'profile' subfield; it should be 'type'.
securityContext: seccomp: RuntimeDefault
Why wrong: The field is 'seccompProfile', not 'seccomp'.
securityContext: seccomp: type: RuntimeDefault
Why wrong: The field is 'seccompProfile', not 'seccomp'.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
securityContext: seccompProfile: type: RuntimeDefault
Option A is correct because in a PodSecurityContext, the seccomp profile is configured under the `seccompProfile` field with a `type` key set to `RuntimeDefault`. This tells the container runtime (e.g., containerd) to use the default seccomp profile provided by the runtime, which blocks a set of syscalls that are not typically needed by containers.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
securityContext: seccompProfile: type: RuntimeDefault
Why this is correct
Correct. This sets the seccomp profile to RuntimeDefault.
Related concept
Read the scenario before looking for a memorised answer.
securityContext: seccompProfile: profile: RuntimeDefault
Why it's wrong here
There is no 'profile' subfield; it should be 'type'.
securityContext: seccomp: RuntimeDefault
Why it's wrong here
The field is 'seccompProfile', not 'seccomp'.
securityContext: seccomp: type: RuntimeDefault
Why it's wrong here
The field is 'seccompProfile', not 'seccomp'.
Common exam traps
The trap here is that candidates confuse the `type` key (which specifies the profile type, e.g., RuntimeDefault, Localhost, Unconfined) with a `profile` key, or they flatten the YAML structure by omitting the `seccompProfile` nesting, leading to invalid configuration.
Detailed technical explanation
Under the hood, the `RuntimeDefault` seccomp profile is the runtime's default seccomp policy (e.g., containerd's default profile), which is based on the Docker default seccomp profile that allows ~300 syscalls and blocks ~44 dangerous ones. In Kubernetes, the PodSecurityContext's `seccompProfile` field was introduced in v1.19 (beta) and became stable in v1.25, replacing the older `seccomp.security.alpha.kubernetes.io/pod` annotation. A real-world scenario where this matters is when a container requires a syscall like `clone` with specific flags that the default profile blocks, forcing you to use `Localhost` with a custom profile instead.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CKAD 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
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FAQ
Application Environment, Configuration and Security — This question tests Application Environment, Configuration and Security — Read the scenario before looking for a memorised answer..
The correct answer is: securityContext: seccompProfile: type: RuntimeDefault — Option A is correct because in a PodSecurityContext, the seccomp profile is configured under the `seccompProfile` field with a `type` key set to `RuntimeDefault`. This tells the container runtime (e.g., containerd) to use the default seccomp profile provided by the runtime, which blocks a set of syscalls that are not typically needed by containers.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This CKAD 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 CKAD exam.
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