200-201 Security Concepts Practice Question
A security analyst is investigating a potential data breach. The analyst identifies that the attacker used a technique to impersonate a legitimate user by spoofing the MAC address and IP address. Which TWO types of network attacks could involve these techniques? (Choose two.)
⚠ Common exam trap
Cisco often tests the distinction between IP spoofing (Layer 3) and ARP spoofing (Layer 2), and candidates may incorrectly assume that IP spoofing alone is sufficient for impersonation on a local network, forgetting that ARP resolution is required for actual traffic interception.
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
✓
ARP spoofing
ARP spoofing is correct because it involves an attacker sending forged ARP messages over a local network to associate their MAC address with the IP address of a legitimate user. This allows the attacker to intercept, modify, or redirect traffic intended for that user, effectively impersonating them at Layer 2.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
ARP spoofing
Why this is correct
ARP spoofing links an attacker's MAC to a legitimate IP.
- ✗
Denial of Service
Why it's wrong here
DoS floods a target, not necessarily spoofing.
- ✗
DNS poisoning
Why it's wrong here
DNS poisoning corrupts DNS cache, not direct MAC/IP spoofing.
- ✓
IP spoofing
Why this is correct
IP spoofing uses a fake source IP address.
- ✗
Phishing
Why it's wrong here
Phishing is social engineering, not network spoofing.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
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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.