This CS0-003 practice question tests your understanding of vulnerability management. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: dAST simulates external attacker behavior against a running application.. 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 DAST scan cannot reach authenticated pages of a web application and reports only public content findings. What should be configured? For control selection, Which control best addresses the stated weakness without hiding risk?
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.
Disable all application authentication
Why wrong: This would change the application and create risk.
Treat absence of findings as proof of security
Why wrong: Unreached pages were not tested.
Reduce the scan to only the landing page
Why wrong: That further limits coverage.
Authenticated scanning with a test account and session handling
DAST needs valid authentication and session management to test protected functionality.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Authenticated scanning with a test account and session handling
DAST scanners require authenticated access to crawl and test pages behind login forms. By configuring authenticated scanning with a test account and session handling (e.g., using cookies or OAuth tokens), the scanner can traverse protected routes and detect vulnerabilities such as SQL injection or XSS on authenticated pages. This directly addresses the stated weakness without masking risk.
Key principle: DAST simulates external attacker behavior against a running application.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Disable all application authentication
Why it's wrong here
This would change the application and create risk.
Treat absence of findings as proof of security
Why it's wrong here
Unreached pages were not tested.
Reduce the scan to only the landing page
Why it's wrong here
That further limits coverage.
Authenticated scanning with a test account and session handling
Why this is correct
DAST needs valid authentication and session management to test protected functionality.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
DAST simulates external attacker behavior against a running application.
Common exam traps
CompTIA often tests the misconception that a DAST scanner's lack of findings on public pages implies the entire application is secure, when in fact the scanner never accessed the authenticated areas, so the risk remains hidden.
Detailed technical explanation
Authenticated scanning typically involves configuring the DAST tool with a pre-recorded login sequence or providing session tokens (e.g., JSESSIONID or Bearer tokens) so the scanner can maintain an authenticated session via HTTP cookies or headers. In real-world scenarios, applications may use multi-factor authentication or CAPTCHA, requiring the test account to bypass these or the scanner to handle session renewal. Without proper session handling, the scanner may be logged out mid-scan, causing incomplete coverage of authenticated endpoints.
Key takeaway
DAST simulates external attacker behavior against a running application.
Real-world example
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
What to study next
Review dAST simulates external attacker behavior against a running application., then practise related CS0-003 questions on the same topic to reinforce the concept.
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FAQ
Vulnerability Management — This question tests Vulnerability Management — DAST simulates external attacker behavior against a running application..
The correct answer is: Authenticated scanning with a test account and session handling — DAST scanners require authenticated access to crawl and test pages behind login forms. By configuring authenticated scanning with a test account and session handling (e.g., using cookies or OAuth tokens), the scanner can traverse protected routes and detect vulnerabilities such as SQL injection or XSS on authenticated pages. This directly addresses the stated weakness without masking risk.
Review dAST simulates external attacker behavior against a running application., then practise related CS0-003 questions on the same topic to reinforce the concept.
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.
DAST simulates external attacker behavior against a running application.
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Last reviewed: Jun 30, 2026
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