provides vital protection and maintenance services for system hardware and software, including enterprise computing systems, networks, transaction processing systems, and corporate IT infrastructure. a. User support
b. Database administration
c. Systems support and security
d. Network administration

C) System support and security.

Explanation:

The aspect of systems support and security in ICT has to do with troubleshooting, fixing and installation of computer system software and hardware of many different types.

It also involves the monitoring and implementation of security measures to protect networks, systems and information.

Also, innovation of security architectural designs and identification and resolution of the causes of security threats and application of effective secured enhancements.

It also has to do with the testing of security softwares for possible breaches and fixing them if found.

System support specialists and security engineers work in these fields and are responsible for these roles. They may work independently or sometimes in groups, brainstorming and contributing creative ideas for their companies.

answer; i do believe its (faster);

the answers b, i just took the quiz on e2020