ISC2 CC Network Security Practice Question
A security analyst is investigating a potential DDoS attack. Which of the following are common indicators of a DDoS? (Choose TWO)
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
✓
Unusually high traffic volume from multiple IP addresses
High volume of traffic from many sources and increased latency are signs of DDoS.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Low CPU usage on servers
Why it's wrong here
DDoS typically causes high CPU.
- ✓
Unusually high traffic volume from multiple IP addresses
Why this is correct
DDoS uses distributed sources.
- ✗
Single source sending many packets
Why it's wrong here
DDoS involves multiple sources; single source may indicate DoS.
- ✓
Slow network performance and increased latency
Why this is correct
DDoS consumes resources causing slowdown.
- ✗
Decrease in DNS queries
Why it's wrong here
DDoS may increase queries, not decrease.
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
Distributed Denial-of-service
A cyberattack where many compromised computers flood a target system with traffic, making it unavailable to legitimate users.
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.
About these practice questions
One of 976 original CC practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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.