Which of the following protects the system from hackers ?

Related Mcqs:

1. A device that provides emergency power to your computer, conditions the voltage, and protects against powers surges is called a __________________?

   A. PSU = Power supply unit
   B. USP = Universal surge protector
   C. UPPS = Universal power protection and supply
   D. UPS = Uninterruptible power supply

2. Which of the following refers to the fastest, biggest and most expansive computer ?

   A. Personal computer
   B. Super computer
   C. Laptop
   D. Note book

3. The biggest memory size in the following is____________________?

   A. Gigabyte
   B. Terabyte
   C. Petabyte
   D. Megabyte

4. Which of the following is the storage area within the computer itself which holds data only temporarily as the computer processes instruction ?

   A. the hard disk
   B. main memory
   C. the control unit
   D. read only memory

5. All of the following storage media have read and write capabilities except _____________________?

   A. Flash memory cards
   B. CD-ROMs
   C. Hard disk drives
   D. Floppy disks

6. Which of the following are not the four major data processing functions of a computer ?

   A. processing data into information
   B. analysing the data or information
   C. storing the data or information
   D. gathering data

7. Which one of the following extends a private network across public networks ?

   A. local area network
   B. virtual private network
   C. enterprise private network
   D. storage area network

8. Which of the following could be digital input devices for computers ?

   A. Digital camcorder
   B. Microphone
   C. Scanner
   D. All of the above

9. Which of the following terms applies to communication between separate computer systems ?

   A. Computer literacy
   B. Power supply
   C. Applications software
   D. Connectivity

10. All the following are examples of input devices EXCEPT a____________________?

    A. mouse
    B. printer
    C. keyboard
    D. scanner