Which of the following is a denial of service attack that attempts to overwhelm a target with ICMP echo requests?

A Smurf attack is a type of DoS attack that uses ICMP echo requests directed to a network's broadcast address, causing all hosts on that network to reply to a spoofed source IP, amplifying the attack.

A Ping flood attack specifically involves sending a high volume of ICMP (Internet Control Message Protocol) echo request packets to a target, aiming to consume its bandwidth and processing resources. The sheer volume of these requests can overwhelm the target, leading to a denial of service for legitimate users.

A Ping of death attack involves sending a malformed or oversized ICMP echo request packet, which can crash older, vulnerable systems when they try to reassemble the fragmented packet.

A SYN flood is a DoS attack that exploits the TCP three-way handshake by sending a flood of SYN requests to a server but never completing the handshake, exhausting server connection resources.