A SYN flood looks to overwhelm a system by tying up all the open sessions that it can create. Which of the following types of attack is this?

A SYN flood is a type of resource exhaustion attack and uses up all available sessions on the system it is aimed at. Although a SYN flood can be a DDoS, no mention was made of multiple source machines for the attack. No application was mentioned, and a SYN flood targets the TCP/IP stack on the system rather than an application. No vulnerability was mentioned, and none is required for a SYN flood, since it simply tries to overwhelm the target’s ability to handle the opened connections. Protections against SYN floods tend to focus on preventing opened connections from causing resource exhaustion and identifying and blocking abusive hosts.