Question 1hardmulti select
Full question →hardmulti selectObjective-mapped
A SOC is tuning a detection for suspected DNS tunnelling. Which evidence points are useful before escalating the alert? (Choose two.)
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
The user's monitor size
Monitor size has no bearing on DNS tunnelling.
B
Best answer
Volume and timing of queries to the same domain or name server
Regular high-volume queries support a tunnelling or beaconing hypothesis.
C
Best answer
Query length and entropy compared with normal DNS traffic
Long, high-entropy labels can indicate encoded data in DNS queries.
D
Distractor review
The colour scheme of the SIEM dashboard
Dashboard appearance does not validate network behaviour.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Related practice questions
Related CS0-003 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
CompTIA A+ hardware practice questions
Practise CS0-003 questions linked to CompTIA A+ hardware.
CompTIA A+ mobile devices practice questions
Practise CS0-003 questions linked to CompTIA A+ mobile devices.
CompTIA A+ networking practice questions
Practise CS0-003 questions linked to CompTIA A+ networking.
CompTIA A+ operating systems practice questions
Practise CS0-003 questions linked to CompTIA A+ operating systems.
CompTIA A+ security practice questions
Practise CS0-003 questions linked to CompTIA A+ security.
CompTIA A+ software troubleshooting questions
Practise CS0-003 questions linked to CompTIA A+ software troubleshooting questions.
CompTIA A+ operational procedures questions
Practise CS0-003 questions linked to CompTIA A+ operational procedures questions.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A responder is acquiring evidence from a potentially compromised server. Which actions support forensic integrity? (Choose two.)
Question 2
A SOC wants to reduce alert fatigue without missing confirmed malicious activity. Which actions are appropriate? (Choose two.)
Question 3
A user reports approving an unexpected OAuth consent prompt for an app named 'Invoice Reader'. The app now has mailbox read permissions. What should the incident responder do first? During detection and analysis, which decision is most defensible?
Question 4
A business owner accepts delayed remediation for a production system. What must the report include? If the primary audience is business service owner, which content choice is most appropriate?
Question 5
A business owner accepts delayed remediation for a production system. What must the report include? If the primary audience is legal/privacy stakeholder, which content choice is most appropriate?
Question 6
A host alert shows certutil.exe downloading a file from an external URL, followed by execution from a user-writable directory. What should the analyst focus on? In the containment trade-off phase, Which response balances containment with evidence preservation?
FAQ
Questions learners often ask
What does this CS0-003 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Volume and timing of queries to the same domain or name server — DNS tunnelling triage should combine statistical DNS characteristics with communication pattern analysis.
What should I do if I get this CS0-003 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
Loading comments…
Sign in to join the discussion.