CPENT Network And Perimeter Exploitation Practice Question
An external penetration tester is tasked with enumerating valid usernames on an enterprise Microsoft Active Directory environment through the SMB protocol without triggering account lockout policies. Which tool is standard for this task?
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
✓
Enum4linux
enum4linux or rpcclient can enumerate users. From an Nmap perspective, script-based enumeration using smb-enum-users is common, but specialized tools like enum4linux query RID cycling.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enum4linux
Why this is correct
Enum4linux is a specialized tool for enumerating information from Windows and Samba hosts, including users and shares.
- ✗
Aircrack-ng
Why it's wrong here
Aircrack-ng is a wireless network auditing suite.
- ✗
John the Ripper
Why it's wrong here
John the Ripper is an offline password hash cracker.
- ✗
Hydra
Why it's wrong here
Hydra is a credential brute-forcing tool, not an enumeration tool.
About these practice questions
Courseiva writes every CPENT question from scratch — 274 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official EC-Council exam blueprint
This CPENT practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CPENT exam.