Which type of attack is this?

Posted by: Pdfprep Category: CISSP-ISSAP Tags: , ,

A user is sending a large number of protocol packets to a network in order to saturate its resources and to disrupt connections to prevent communications between services.

Which type of attack is this?
A . Denial-of-Service attack
B . Vulnerability attack
C . Social Engineering attack
D . Impersonation attack

Answer: A