d7 6-2 Operating Systems 1 - GCSE Quiz

Which of the following statements best describes an operating system.

• It is a part of a user interface that allows a user to interact with parts of the computer.

• It is the software that controls the operation of the computer and allows users to interact with it.

• It is a program that allows you to control manufacturing equipment.

• It is a function of a computer system that allows you to start your device.

Answer explanation

The operating system is the software that controls the operation of the computer and allows users to interact with it, making it the best description among the options provided.

What is the purpose of memory management? Choose two options.

• It deallocates memory from programs when they are closed.

• It will assign processing time to each program that is running in memory.

• It allocates memory to each program that is running.

• It will allow peripheral devices to communicate with memory.

• It will allow you to permanently delete files from memory.

Answer explanation

Memory management deallocates memory from programs when they are closed and allocates memory to each program that is running.

How many instructions can a CPU carry out at a time?

• One

• Four

• Eight

• Infinite

Answer explanation

A CPU can carry out one instruction at a time, making the correct answer choice 'One'.

Operating systems can allocate small amounts of processing time to different applications to allow you to run more than one at the same time. What do we call this?

• Memory Management

• Device Drivers

• Multi-Tasking

• User Interface

Answer explanation

Multi-Tasking allows operating systems to allocate small amounts of processing time to different applications to run more than one at the same time.

What is scheduling?

• The process of assigning memory to each application currently running.

• The process of assigning a portion of processing time to each application running.

• The process of transferring data to virtual memory from main memory.

• A utility program that allows you to view how much processing time and memory is being used.

Answer explanation

Scheduling is the process of assigning a portion of processing time to each application running.

What is Virtual Memory? Select three statements that are correct.

• It is used by single-core processors when running two or more programs.

• It is a file on your hard drive.

• It is where some data is written to the hard drive when RAM is full.

• It is managed by the operating system.

• It is managed by the CPU.

Answer explanation

Virtual Memory is a file on the hard drive where data is written when RAM is full. It is managed by the operating system.

What is the name of the file used in virtual memory?

• Virtualfile

• Pagefile

• Memoryfile

• Indexfile

Answer explanation

The name of the file used in virtual memory is called Pagefile, not Virtualfile, Memoryfile, or Indexfile.