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A security analyst reviews authentication logs and discovers hundreds of failed login attempts from a single external IP address within a five-minute window. All attempts target the same username 'jsmith' but use different passwords. Which type of password attack does this pattern most likely indicate?

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A security analyst reviews authentication logs and discovers hundreds of failed login attempts from a single external IP address within a five-minute window. All attempts target the same username 'jsmith' but use different passwords. Which type of password attack does this pattern most likely indicate?

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.

A

Distractor review

Password spraying

Incorrect. Password spraying attempts a single common password against many usernames to avoid lockouts. This scenario targets one username with many passwords.

B

Best answer

Brute force

Correct. A brute force attack systematically tries many passwords against a single account. The log pattern of hundreds of different passwords for the same username matches this method.

C

Distractor review

Credential stuffing

Incorrect. Credential stuffing uses stolen username/password pairs from previous breaches to log in automatically. The attempts here show varying passwords, not reused known credentials.

D

Distractor review

Dictionary attack

Incorrect. While a dictionary attack also uses a list of likely passwords, it is a subset of brute force. The broader category 'brute force' is more accurate given the large volume and systematic nature of the attempts.

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.

Related practice questions

Related SY0-701 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

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.

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: Brute force — The scenario describes many different passwords being tried against a single username. This is characteristic of a brute force attack, where an attacker systematically attempts all possible password combinations (or a large set) for a specific account until the correct one is found. Password spraying would involve trying the same password against many usernames. Credential stuffing uses previously breached username/password pairs. A dictionary attack uses a list of common passwords but still focuses on a single account or multiple accounts; the key difference here is the volume and pattern of attempts against one username.

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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