(tco 1) "the protection afforded to an automated information system in order to attain the applicable objectives of preserving the integrity, availability and confidentiality of information system resources" is the definition of

Computer Security (Cyber security)

Explanation:

Computers are also considered as information processing systems, computer security is an all encompassing term referring to the protection against different types of threats, these threats could be;

Theft (Hardware, electronic data)

Damage (Hardware and software application)

Disruption of the services of the computer leading to loss in Confidentiality, Integrity and Availability of its services.

All measures that are put in place to mitigate against these threats are referred to as computer security.

b and c ( ip address and port number)