200-201 Network Intrusion Analysis Practice Question
A security analyst is investigating a PCAP that shows multiple failed SMB authentication attempts from a single host to different IP addresses, followed by a successful authentication. Which TWO techniques are likely being used?
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
✓
SMB brute force
Pass-the-hash uses NTLM hashes for authentication, and SMB brute force involves trying multiple passwords or hashes. Both can produce multiple failed attempts then success.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SQL injection
Why it's wrong here
SQL injection is for web apps, not SMB.
- ✓
SMB brute force
Why this is correct
Brute force attempts multiple credentials until success.
- ✗
ARP spoofing
Why it's wrong here
ARP spoofing is for man-in-the-middle, not SMB auth.
- ✗
DNS tunnelling
Why it's wrong here
Not related to SMB authentication.
- ✓
Pass-the-hash
Why this is correct
Uses NTLM hash instead of password, often seen in lateral movement.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-201 practice question is part of Courseiva's free Cisco 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 200-201 exam.