How does a denial-of-service attack work?

How does a denial-of-service attack work?
A . A hacker prevents a legitimate user (or group of users) from accessing a service
B . A hacker uses every character, word, or letter he or she can think of to defeat authentication
C . A hacker tries to decipher a password by using a system, which subsequently crashes the network
D . A hacker attempts to imitate a legitimate user by confusing a computer or even another person

View Answer

Answer: A