A SIEM correlation rule alerts when a single user account fails to authenticate 20 times in 5 minutes and then succeeds from the same source IP. What is the most likely reason the team should investigate this event?
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.
Distractor review
The account was probably being used normally because the password was changed
Normal password changes do not usually produce many rapid failures followed by success from the same source.
Best answer
The pattern may indicate password guessing or credential stuffing
Repeated failures followed by a success can show automated guessing, and it is worth investigating for compromise.
Distractor review
The SIEM is misconfigured because all failed logons are false positives
Failed logons are valid security events; the sequence can be suspicious even if some failures are legitimate.
Distractor review
The account is definitely malicious and should be deleted immediately
The pattern is suspicious, but confirmation and scope checking should happen before destructive account actions.
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.
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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 laptop is suspected of being used in a malware incident. It is still powered on and connected to Wi-Fi. What should the responder do before shutting it down?
Question 2
An employee reports a ransomware note on a file server. The server is still powered on, shares are still being accessed, and management wants service restored as quickly as possible. What should the incident response team do first?
Question 3
An employee reports a ransomware note on a finance laptop. The laptop is still powered on, connected to Wi-Fi, and the user says they were just working in a spreadsheet. Management wants the fastest safe response that also preserves evidence. What should the responder do first?
Question 4
You are handed a company laptop suspected in an insider theft case. Legal says the evidence may be needed in court. Which action best preserves admissibility?
Question 5
A developer wants to reduce the risk of SQL injection in a new customer search form. Which two changes are the best mitigations? Select two.
Question 6
A branch office uses a flat LAN, and a compromise on one user workstation could spread quickly to finance systems. Management wants finance workstations isolated from general users, but finance staff still need access to a central finance application and network printer. What is the best design change?
FAQ
Questions learners often ask
What does this SY0-701 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: The pattern may indicate password guessing or credential stuffing — The pattern may indicate password guessing or credential stuffing. A burst of failed logons followed by a success from the same IP is a common sign that someone is trying multiple passwords until one works. This does not prove compromise by itself, but it is a strong signal that the account should be reviewed, the source investigated, and related logs correlated to determine whether the login was legitimate. Why others are wrong: A normal password change does not usually create this exact pattern from the same source. The SIEM is not necessarily misconfigured; the alert is based on a meaningful behavioral pattern. Deleting the account immediately is too aggressive without confirmation and may disrupt business if the login was legitimate. Investigation should come before irreversible action.
What should I do if I get this SY0-701 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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