Computer Fundamentals

Explain how dust affects the performance of computers, What precautions should be taken against dust?

Give advantages of preventive maintenance.

Distinguish between a stabilizer and a UPS.

Explain the terms blackout, blowout, transient and EMI.

List the physical factors that affect the performance of a computer.

What is meant by virus and worm? Discuss the necessity to make backup for data security.

Describe the disaster, losses and recover plants of an information system.

What is meant by security of information systems? Discuss the methods of network security.

What is meant by access control? Explain the methodology for access control in information systems?

Briefly describe the methods to prevent viruses and worms of information systems.