Please help me with this:

In the given reference, which IT function should be segregated from the other function (at least 3)? Why is it important to segregate duties of the following IT functions? How those duties should be segregated among IT personnel? Illustrate possible scenarios (optional, but I'd really appreciate your ideas)

 

 

Reference: (IT functions)

Systems Analysts

          The system analyst is responsible for analyzing the present user environment and requirements and recommending the specific changes which can be made, recommending the purchases of a new system, designing a new IT system. The analyst is in constant contact with the user department And the programming staff to ensure the user's actual an ongoing needs are being met. A system flow chart is one tool used by analysts to define the system requirement.

 

Applications Programmer

          The applications programmer is responsible for writing, testing, and debugging the application programs from the specifications (whether general or specific) provided by the systems analyst. A program flow chart is one tool used by the applications programmer to define the program logic. 

 

Systems Programmer

          The systems programmer is responsible for implementing, modifying, and debugging the software necessary for making the hardware work (such as the operating system, telecommunications monitor, and the data base management system)

 

Operator

          The operator is responsible for the daily computer operations of both the hardware and the software. She/he mouths magnetic tapes on the tape drives, supervises operations on the operator's console (a special CRT), accepts any required input, and distributes any generated output. 

 

Data librarian

          The librarian is responsible for the custody of the removable media, i.e., magnetic tapes or disks, and for the maintenance of program and system documentation.

 

Quality assurance

          The quality assurance function is a relatively new function established primarily to ensure that new systems under development and old systems being changed are adequately controlled and that they meet the user's specifications and follow department documentation standards.

 

Control group

          The control group acts as liaison between users and the processing center. This group records input data in a control log, follows the progress of processing, distributes output and ensures compliance with control totals.

 

Data security

          The data security function is responsible for maintaining the integrity of the on-line access control security software. Passwords and IDs are issued to users and follow up is done on all security violations. Review of the work of the data security function can minimize testing.

 

Database Administrator

          In a database environment, a database administrator (DBA) may exist as another key function. The DBA is responsible for maintaining the database and restricting access to the database to authorized personnel.

 

Network technician

          The network technician is fast becoming the most powerful position in a MIS organization. Using line monitoring equipment, we can see each keystroke  made by any user. This group must have strict accountability controls.