A program that repeatedly and disruptively displays advertisements on a user’s computer.
A malware program that uses the resources of the computer in which it is installed to spread to other computers and cause the computers to become unreliable. (Unlike a virus, a worm does not attach itself to files.)
A utility that searches for and removes any malware on a computer.
7. What Is System diagnosis utility
A utility that scans the computer for common faults and problems and presents the results (and suggestions for the solution) to the user.
The tools provided by the operating system to allow the computer and the user to give instructions to the computer and receive and understand the results.
Systems software that performs a common maintenancece task.
8. What Is Device driver
Software that enables the program to operate.
System software that is used by the operating system to contol peripheral devices.
A function of the operating system that involves allocating memory to programs and data which are being used.
9. What Is an Input device
A device that is used to enter data into a computer. It takes data that a user presents and converts it into binary code.
A device that presents the result of processing. It converts binary data into a form which can be read by a user, or into a result in the external world.
Storage that can be disconnected from the main computer unit, for example to transfer files between computers.
10. What Is Firewall
A utility that searches for and removes any viruses on a computer.
A utility or device that monitors the traffic between a computer and the internet and only allows connections that are authorised.
A utility that searches for and removes any malware on a computer
11. What Is A Fetch–Execute cycle
Memory buffer on the processor that stores instructions which have been fetched before and allows them to be fetched more quickly the next time.
The process by which programs are run on a computer. The processor repeatedly fetches the instructions of the program from memory and executes them.
The speed at which the processor carries out instructions, measured in Megahertz (MHz) or Gigahertz (GHz).
12. What Is Read-Only Memory (ROM)
Memory that is used to store programs permanently and in the same location, such as the boot-up program. This memory is non-volatile and is not deleted when the computer is switched off.
Memory that is used to store the programs and data currently in use by a computer. It is volatile, which means that it gets erased when the computer is switched off.
Memory that can be addressed and accessed directly by the processor.
