The answer is an unusual increase in ICMP echo requests, often alongside a flood of traffic from many distributed sources. This is correct because a distributed denial-of-service (DDoS) attack leverages a botnet—a network of compromised devices—to send massive volumes of packets, such as ICMP echo requests, toward a single target. The goal is to exhaust the target’s bandwidth or processing capacity, making it unreachable for legitimate users. On the Cisco CyberOps Associate 200-201 exam, this question tests your ability to distinguish DDoS characteristics from a standard DoS attack, which originates from a single source. A common trap is confusing a simple ping flood with a DDoS; remember that the “distributed” element is key—multiple sources, not just high volume. For a memory tip, think “Many Machines, One Mission: Overwhelm.”
200-201 Network Intrusion Analysis Practice Question
This 200-201 practice question tests your understanding of network intrusion analysis. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which two characteristics are commonly associated with a distributed denial-of-service (DDoS) attack?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
High volume of traffic from multiple sources
A DDoS attack is characterized by a high volume of traffic originating from multiple compromised sources (a botnet) to overwhelm a target. This distributed nature distinguishes it from a DoS attack, which typically uses a single source. The goal is to exhaust the target's bandwidth, processing capacity, or application resources, causing denial of service for legitimate users.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
High volume of traffic from multiple sources
Why this is correct
Multiple sources are a defining feature of DDoS.
Related concept
Read the scenario before looking for a memorised answer.
✗
Multiple failed login attempts
Why it's wrong here
Failed logins indicate password guessing, not DDoS.
✗
Slow application response time
Why it's wrong here
This is a symptom, not a characteristic of the attack itself.
Read the scenario before looking for a memorised answer.
✗
Traffic from a single IP address
Why it's wrong here
Single source is typical of DoS, not DDoS.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between a DoS (single source) and a DDoS (multiple sources), so the trap here is that candidates may incorrectly select 'Traffic from a single IP address' (option E) as a DDoS characteristic, confusing the two attack types.
Detailed technical explanation
How to think about this question
Under the hood, DDoS attacks often leverage amplification techniques, such as using ICMP echo requests (option D) to trigger larger responses from vulnerable servers (e.g., Smurf attack). In a real-world scenario, a DNS amplification DDoS sends small queries with a spoofed victim IP to open resolvers, which then flood the victim with large responses, achieving a high amplification factor. The use of multiple sources makes it difficult to filter traffic without impacting legitimate users, requiring advanced mitigation techniques like BGP Flowspec or scrubbing centers.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Network Intrusion Analysis — This question tests Network Intrusion Analysis — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: High volume of traffic from multiple sources — A DDoS attack is characterized by a high volume of traffic originating from multiple compromised sources (a botnet) to overwhelm a target. This distributed nature distinguishes it from a DoS attack, which typically uses a single source. The goal is to exhaust the target's bandwidth, processing capacity, or application resources, causing denial of service for legitimate users.
What should I do if I get this 200-201 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.