CS0-003 Vulnerability Management Practice Question
This CS0-003 practice question tests your understanding of vulnerability management. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 scanner flags TLS 1.0 on a server, but the service owner says TLS 1.0 is disabled. What is the BEST validation method? For stakeholder management, Which documentation or approval is required to keep the programme defensible?
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
✓
Manually test the service with a TLS client or scanner profile that negotiates protocol versions
Option B is correct because the scanner may have detected TLS 1.0 due to a false positive from a misconfigured cipher suite or a server-side protocol negotiation artifact. Manually testing with a TLS client (e.g., OpenSSL s_client -tls1) or a scanner profile that explicitly negotiates protocol versions provides definitive evidence of whether TLS 1.0 is actually enabled, resolving the discrepancy between the scanner result and the owner's claim.
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.
✗
Close the finding because the owner disagrees
Why it's wrong here
Owner statements need evidence before closure.
✓
Manually test the service with a TLS client or scanner profile that negotiates protocol versions
Why this is correct
Direct protocol validation determines whether TLS 1.0 is actually accepted.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the severity to informational automatically
Why it's wrong here
Severity should reflect verified exposure, not disagreement.
✗
Delete the server from the scan scope
Why it's wrong here
Removing assets hides risk and breaks governance.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a scanner's automated result is always authoritative, when in fact manual validation is required to confirm protocol-level findings, especially when the service owner disputes the result.
Detailed technical explanation
How to think about this question
TLS 1.0 (RFC 2246) uses a different handshake structure than TLS 1.2/1.3, and some servers may respond to a ClientHello with a ServerHello that includes a TLS 1.0 version field even if the protocol is disabled, due to a fallback mechanism or a misconfigured cipher suite. A manual test using OpenSSL's `s_client -tls1` forces the client to send a TLS 1.0 ClientHello; if the server completes the handshake, TLS 1.0 is active. In real-world scenarios, load balancers or reverse proxies may terminate TLS and re-encrypt with a different version, causing scanner false positives that only manual testing can clarify.
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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CS0-003 question in full detail.
Vulnerability Management — This question tests Vulnerability Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Manually test the service with a TLS client or scanner profile that negotiates protocol versions — Option B is correct because the scanner may have detected TLS 1.0 due to a false positive from a misconfigured cipher suite or a server-side protocol negotiation artifact. Manually testing with a TLS client (e.g., OpenSSL s_client -tls1) or a scanner profile that explicitly negotiates protocol versions provides definitive evidence of whether TLS 1.0 is actually enabled, resolving the discrepancy between the scanner result and the owner's claim.
What should I do if I get this CS0-003 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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