- A
Increase the failed attempt threshold to 20 attempts within the same 5-minute window.
Why wrong: Raising the threshold reduces sensitivity but may still generate false positives from fast typists and could allow a true brute-force attack to succeed if the attacker keeps under the new limit.
- B
Modify the rule to trigger only when the failed attempts originate from multiple distinct source IP addresses.
This is correct because a genuine brute-force attack often uses a distributed set of source IPs to evade rate limiting, whereas a legitimate user mistyping typically connects from a single IP. This change filters out most false positives while still detecting distributed attacks.
- C
Modify the rule to trigger only when the failed attempts are against multiple distinct user accounts.
Why wrong: This would detect password spraying attacks (many accounts, one password), not brute-force against a single account. It does not address the false positive issue described.
- D
Add an exception to suppress alerts for any user account that has a valid password reset request within the same time period.
Why wrong: This is unreliable because not all users submit password reset requests, and an attacker could also initiate a reset to evade detection. It does not effectively reduce false positives in a consistent manner.
SY0-701 Security Operations Practice Question
This SY0-701 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 security operations analyst is tuning a SIEM correlation rule designed to detect brute-force password attacks against domain user accounts. The current rule generates an alert when a single user account has more than 10 failed logon attempts within a 5-minute window. The SOC team is overwhelmed by thousands of alerts each day, the vast majority of which are triggered by legitimate users who accidentally mistype their passwords. Which of the following modifications to the rule would most effectively reduce false positives while still detecting actual brute-force attacks?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Modify the rule to trigger only when the failed attempts originate from multiple distinct source IP addresses.
Option B is correct because brute-force attacks often distribute failed attempts across multiple source IP addresses to evade detection, while legitimate users typically mistype from a single IP. By requiring failed attempts from multiple distinct source IPs, the rule filters out accidental mistypes (single IP) and still catches distributed brute-force attacks, which is a common evasion technique.
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.
- ✗
Increase the failed attempt threshold to 20 attempts within the same 5-minute window.
Why it's wrong here
Raising the threshold reduces sensitivity but may still generate false positives from fast typists and could allow a true brute-force attack to succeed if the attacker keeps under the new limit.
- ✓
Modify the rule to trigger only when the failed attempts originate from multiple distinct source IP addresses.
Why this is correct
This is correct because a genuine brute-force attack often uses a distributed set of source IPs to evade rate limiting, whereas a legitimate user mistyping typically connects from a single IP. This change filters out most false positives while still detecting distributed attacks.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Modify the rule to trigger only when the failed attempts are against multiple distinct user accounts.
Why it's wrong here
This would detect password spraying attacks (many accounts, one password), not brute-force against a single account. It does not address the false positive issue described.
- ✗
Add an exception to suppress alerts for any user account that has a valid password reset request within the same time period.
Why it's wrong here
This is unreliable because not all users submit password reset requests, and an attacker could also initiate a reset to evade detection. It does not effectively reduce false positives in a consistent manner.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may focus on adjusting numeric thresholds (Option A) as a quick fix, overlooking the behavioral pattern of source IP diversity that distinguishes accidental mistypes from coordinated brute-force attacks.
Detailed technical explanation
How to think about this question
In SIEM correlation rules, the source IP address field is critical for distinguishing between human error and automated attacks. Attackers often use botnets or proxy chains to rotate source IPs, making the 'multiple distinct source IPs' condition a strong indicator of a distributed brute-force attempt. Legitimate users, even when mistyping, almost always originate from a single IP (e.g., their workstation or VPN endpoint), so this modification leverages behavioral baselining to reduce noise without sacrificing detection efficacy.
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 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
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SY0-701 question test?
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Modify the rule to trigger only when the failed attempts originate from multiple distinct source IP addresses. — Option B is correct because brute-force attacks often distribute failed attempts across multiple source IP addresses to evade detection, while legitimate users typically mistype from a single IP. By requiring failed attempts from multiple distinct source IPs, the rule filters out accidental mistypes (single IP) and still catches distributed brute-force attacks, which is a common evasion technique.
What should I do if I get this SY0-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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