The IT field is integral to the functioning of modern corporations. The IT department will administrate and monitor the computer networks, software, and hardware that is used by the company and its employees. This will include maintenance and troubleshooting.
Each IT department will have its own structure, so be sure to tailor your CV to the specifications of the position that you are applying for. If you are just entering the industry, focus on your skills and education. If you are more experienced and looking to become an IT manager, your CV should showcase your leadership capabilities and your experience with the relevant technologies.