Which of the following can be described as a DoS attack?

A.
Disabling a specific system and making it unavailable to users

B.
Implementing a keylogger

C.
Intercepting a packet and decrypting the contents

D.
Communicating with employees to get company information

Explanation:

A denial of service (DoS) attack is a malicious attempt to make a server or a network resource
unavailable to users, usually by temporarily interrupting or suspending the services of a host
connected to the Internet.