210-250 · Question #153
What two types of attacks are examples of ICMP DoS attacks? (Choose two.)
The correct answer is A. smurf attack C. ping of death attack. Smurf and ping of death attacks both exploit ICMP to amplify or crash target systems, making them the two classic examples of ICMP-based DoS attacks.
Question
What two types of attacks are examples of ICMP DoS attacks? (Choose two.)
Options
- Asmurf attack
- Bblooming onion attack
- Cping of death attack
- DDHCP depletion attack
How the community answered
(54 responses)- A89% (48)
- B4% (2)
- D7% (4)
Why each option
Smurf and ping of death attacks both exploit ICMP to amplify or crash target systems, making them the two classic examples of ICMP-based DoS attacks.
A smurf attack sends ICMP echo requests to a network broadcast address with a spoofed source IP matching the victim's address, causing all hosts on the subnet to reply to the victim and amplify the denial-of-service traffic against it.
A blooming onion attack is not a recognized standard network security attack - it is a fictitious term with no documented association with ICMP or any denial-of-service methodology.
A ping of death attack sends malformed or oversized ICMP echo request packets exceeding 65,535 bytes to a target, causing the receiving system to crash or reboot due to a buffer overflow when the OS attempts to reassemble the fragments.
DHCP depletion attacks exhaust a DHCP server's address pool by sending spoofed DHCP Discover messages over UDP, which exploits the DHCP protocol rather than ICMP.
Concept tested: ICMP-based denial-of-service attack types
Source: https://www.cisco.com/c/en/us/about/security-center/flood-attacks.html
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