ISC2 CC Network Security Practice Question
Which THREE of the following are common mitigation techniques against Denial of Service (DoS) attacks?
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
✓
Implementing rate limiting on servers
DoS mitigation includes using DDoS protection services, rate limiting, and filtering traffic based on IP reputation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Implementing rate limiting on servers
Why this is correct
Rate limiting restricts the number of requests from a source.
- ✗
Disabling all firewall rules
Why it's wrong here
Disabling firewalls worsens the attack.
- ✗
Allowing all inbound traffic to avoid blocking legitimate users
Why it's wrong here
This would not mitigate the attack.
- ✓
Filtering traffic based on IP reputation
Why this is correct
Blocking known malicious IPs helps reduce attack volume.
- ✓
Using a Content Delivery Network (CDN) to absorb traffic
Why this is correct
CDNs like Cloudflare distribute traffic and absorb DDoS.
Go deeper
Related to this question
Learn chapter
Wireless and Remote Access Security
Key term
Denial-of-service
A Denial-of-service (DoS) attack is an attempt to make a computer, network, or online service unavailable to its intended users by overwhelming it with fake traffic or requests.
Key term
DDoS
A DDoS (Distributed Denial-of-Service) attack is a malicious attempt to disrupt normal traffic of a targeted server, service, or network by overwhelming it with a flood of internet traffic from multiple compromised systems.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 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 CC exam.