easyMultiple ChoiceObjective-mapped
200-201 Practice Question: Refer to the exhibit
Exhibit
Refer to the exhibit. Event: 1 Timestamp: 2023-10-01 08:00:00 Src IP: 10.0.0.1 -> Dst IP: 10.0.0.255 Protocol: ICMP Type: 8 (Echo Request) Event: 2 Timestamp: 2023-10-01 08:00:01 Src IP: 10.0.0.1 -> Dst IP: 10.0.0.255 Protocol: ICMP Type: 8 (Echo Request) Event: 3 Timestamp: 2023-10-01 08:00:02 Src IP: 10.0.0.1 -> Dst IP: 10.0.0.255 Protocol: ICMP Type: 8 (Echo Request)
Refer to the exhibit. An analyst sees repeated ICMP echo requests from a host to the broadcast address. What is this an example of?
⚠ Common exam trap
Cisco often tests the distinction between a generic DoS and a specific named attack (Smurf) to see if candidates recognize the unique broadcast amplification mechanism rather than just the outcome of service disruption.
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
✓
Smurf attack
A Smurf attack sends ICMP echo requests to a network broadcast address with the source IP spoofed to the victim's address. All hosts on the network reply to the victim, overwhelming it with traffic. This is a classic amplification-based denial-of-service attack.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Ping sweep
Why it's wrong here
Ping sweep uses unicast to multiple IPs.
- ✓
Smurf attack
Why this is correct
Smurf attack uses broadcast ICMP to amplify traffic.
- ✗
ICMP tunneling
Why it's wrong here
ICMP tunneling uses unicast with data payload.
- ✗
Denial of service
Why it's wrong here
DoS targets a specific IP.
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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.