Quick Answer
The correct answer is NetFlow or proxy logs showing destination, volume, and timing, combined with database audit logs. This pairing works because database audit logs reveal exactly which tables or columns were accessed and by which accounts, directly exposing unauthorized queries or unusual retrieval patterns that signal data exfiltration. Meanwhile, NetFlow or proxy logs capture the destination IP addresses, data volumes, and timing of HTTPS sessions, allowing a threat hunter to spot large or anomalous outbound transfers to suspicious hosts even when the payload is encrypted. On the CompTIA CySA+ CS0-003 exam, this question tests your ability to distinguish between sources that show the “what” of database activity and the “where/how much” of network flow, a common trap being to rely solely on encrypted traffic logs. Remember the mnemonic “Audit the Access, Flow the Volume”—database logs track who touched what, while flow logs track how much went where.
This CS0-003 practice question tests your understanding of security operations. 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 threat hunter suspects data exfiltration over HTTPS from a database server. Which data sources are most useful? (Choose two.)
Database audit logs showing queried objects and accounts
Database logs reveal whether sensitive data was accessed before transfer.
Printer toner status
Why wrong: Toner status is unrelated to exfiltration.
Building temperature logs
Why wrong: Environmental telemetry does not explain outbound data transfer.
NetFlow or proxy logs showing destination, volume, and timing
Flow/proxy data establishes transfer pattern and destination.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Database audit logs showing queried objects and accounts
Database audit logs record which objects (tables, columns) were queried and by which accounts, directly revealing unauthorized access or unusual data retrieval patterns that could indicate exfiltration. NetFlow or proxy logs capture destination IP addresses, data volumes, and timing of HTTPS sessions, allowing the hunter to spot large or anomalous outbound transfers to suspicious hosts, even though the payload is encrypted.
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.
Database audit logs showing queried objects and accounts
Why this is correct
Database logs reveal whether sensitive data was accessed before transfer.
Related concept
Read the scenario before looking for a memorised answer.
Printer toner status
Why it's wrong here
Toner status is unrelated to exfiltration.
Building temperature logs
Why it's wrong here
Environmental telemetry does not explain outbound data transfer.
NetFlow or proxy logs showing destination, volume, and timing
Why this is correct
Flow/proxy data establishes transfer pattern and destination.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Cisco often tests the misconception that encrypted traffic (HTTPS) is completely opaque, leading candidates to overlook metadata sources like NetFlow or proxy logs that can reveal exfiltration patterns without decryption.
Detailed technical explanation
HTTPS exfiltration often uses encrypted tunnels to blend with legitimate traffic; NetFlow v9/IPFIX records provide flow-level metadata (bytes, packets, duration, TCP flags) without decrypting payloads, while database audit logs (e.g., Oracle Fine-Grained Auditing or SQL Server Audit) capture exact SELECT statements and row counts. In a real-world scenario, a threat actor might use a compromised service account to query a sensitive table and send the results via HTTPS to a cloud storage endpoint; the database audit log would show the query pattern, and NetFlow would reveal a spike in outbound bytes to that endpoint.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
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FAQ
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
The correct answer is: Database audit logs showing queried objects and accounts — Database audit logs record which objects (tables, columns) were queried and by which accounts, directly revealing unauthorized access or unusual data retrieval patterns that could indicate exfiltration. NetFlow or proxy logs capture destination IP addresses, data volumes, and timing of HTTPS sessions, allowing the hunter to spot large or anomalous outbound transfers to suspicious hosts, even though the payload is encrypted.
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 11, 2026
This CS0-003 practice question is part of Courseiva's free CompTIA 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 CS0-003 exam.
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