Q. A malicious attempt by a single person or a group of people to cause the victim, site or node to deny service to it customers is

A
Denial of service attack
B
Ethical hacking
C
Authentication
D
None of these
Solution:

Denial-Of-Service Attack = DOS Attack is a malicious attempt by a single person or a group of people to cause the victim, site or node to deny service to it customers.When a denial of service (DoS) attack occurs, a computer or a network user is unable to access resources like e-mail and the Internet. An attack can be directed at an operating system or at the network.

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