Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) — Question 258

Which attack method is being used when an attacker tries to compromise a network with an authentication system that uses only 4-digit numeric passwords and no username?

Answer options

• A. replay
• B. SQL injection
• C. dictionary
• D. cross-site scripting

Correct answer: C

Explanation

The correct answer is C, dictionary attack, as this method involves systematically guessing passwords from a predefined list, which is effective given the limited combination of 4-digit numeric passwords. The other options, such as replay, SQL injection, and cross-site scripting, pertain to different attack vectors that do not specifically target weak password systems.