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.
Which THREE of the following are recommended steps during incident response for a compromised pod? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Take a memory dump of the container for analysis
Isolating via egress denial, collecting logs/exec output, and taking a memory dump for forensic analysis are appropriate. Restarting pods may destroy evidence, and deleting the namespace is too drastic.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Take a memory dump of the container for analysis
Why this is correct
Preserves in-memory evidence.
Related concept
Standard ACLs match source addresses.
✗
Delete the entire namespace containing the pod
Why it's wrong here
Destroys evidence and affects other workloads.
✓
Use kubectl logs and kubectl exec to collect forensic data
Why this is correct
Collects logs and runtime state.
Related concept
Standard ACLs match source addresses.
✓
Apply a NetworkPolicy to deny egress traffic from the pod
Why this is correct
Isolates the pod to prevent further damage.
Related concept
Standard ACLs match source addresses.
✗
Immediately restart the pod to stop the attack
Why it's wrong here
Restarting may destroy volatile evidence.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKS question in full detail.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related CKS ACL questions on filtering logic and placement.
Monitoring, Logging and Runtime Security — This question tests Monitoring, Logging and Runtime Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Take a memory dump of the container for analysis — Isolating via egress denial, collecting logs/exec output, and taking a memory dump for forensic analysis are appropriate. Restarting pods may destroy evidence, and deleting the namespace is too drastic.
What should I do if I get this CKS question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related CKS ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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