CKS Monitoring Logging and Runtime Security Practice Question
This CKS practice question tests your understanding of monitoring logging and runtime security. 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.
You are auditing a cluster for runtime security best practices. Which TWO of the following actions are recommended to improve container runtime 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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Deploy Falco to monitor system calls and detect anomalous behavior.
Falco is a CNCF-graduated runtime security tool that uses eBPF or kernel modules to monitor system calls in real time, detecting anomalous behavior such as unexpected process execution or file writes. Deploying Falco is a recommended best practice for runtime security because it provides deep visibility into container activity without requiring application changes, and it can trigger alerts or actions based on customizable rules.
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.
✓
Deploy Falco to monitor system calls and detect anomalous behavior.
Why this is correct
Falco is a standard runtime security tool.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Disable the container runtime's security engine to reduce overhead.
Why it's wrong here
Disabling security reduces protection.
✗
Run containers in privileged mode for better performance.
Why it's wrong here
Privileged containers weaken security.
✓
Enable seccomp profiles to restrict available system calls.
Why this is correct
Seccomp reduces kernel attack surface.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set AppArmor to unconfined for all pods to avoid profile conflicts.
Why it's wrong here
Unconfined disables AppArmor protection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CNCF often tests the misconception that disabling security features (like seccomp or AppArmor) improves performance without understanding the severe security trade-offs, or that privileged mode is an acceptable performance tuning technique.
Detailed technical explanation
How to think about this question
Seccomp (secure computing mode) works by intercepting syscalls and allowing only a whitelist (e.g., the default Docker seccomp profile blocks ~44 dangerous syscalls like `mount` and `ptrace`). AppArmor uses LSM (Linux Security Module) hooks to enforce per-pod profiles; setting it to 'unconfined' removes all MAC restrictions, which is especially dangerous in multi-tenant clusters where a compromised container could escape. Falco's rules are written in YAML and can detect patterns like 'spawned a shell in a container' or 'unexpected network connection' by correlating syscall events with container metadata.
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 junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKS question in full detail.
Monitoring Logging and Runtime Security — This question tests Monitoring Logging and Runtime Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Deploy Falco to monitor system calls and detect anomalous behavior. — Falco is a CNCF-graduated runtime security tool that uses eBPF or kernel modules to monitor system calls in real time, detecting anomalous behavior such as unexpected process execution or file writes. Deploying Falco is a recommended best practice for runtime security because it provides deep visibility into container activity without requiring application changes, and it can trigger alerts or actions based on customizable rules.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". 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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