200-201 Security Concepts Practice Question
An attacker intercepts communication between a client and server and modifies the data being transmitted. The client and server are unaware of the modification. Which type of attack is being performed?
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
✓
Man-in-the-Middle
Man-in-the-Middle (MitM) attack involves an attacker intercepting and potentially altering communication between two parties without their knowledge.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Man-in-the-Middle
Why this is correct
MitM attacks intercept and can modify communications between two parties.
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ARP spoofing
Why it's wrong here
ARP spoofing is a technique used to enable MitM attacks by associating the attacker's MAC with the IP of the target, but the attack itself is MitM.
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DNS poisoning
Why it's wrong here
DNS poisoning corrupts DNS records to redirect traffic, not necessarily modify data in transit.
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Replay attack
Why it's wrong here
A replay attack captures and retransmits valid data, but does not modify it in transit.
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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.