H046 Paging and Segmentation

What are the two main strategies for memory management?

• Paging and segmentation

• Virtual memory and paging

• Segmentation and virtual memory

• Paging and virtual memory

Why is it not desirable to move a program in memory?

• It takes a lot of time to move a program

• All the addresses and free space references need updating

• Both of the options given

• None of the options given

What is the main difference between paging and segmentation?

• Paging divides memory into fixed size pages, while segmentation divides memory based on logical divisions

• 
  Paging divides memory based on logical divisions, while segmentation divides memory into fixed size pages

• None of the above

• 
  Paging and segmentation are the same

What is virtual memory?

• 
  Memory that is physically divided into fixed size pages

• Memory that is stored on the hard disk and used when RAM is full

• Memory that is divided based on logical divisions

• Memory that is used to store programs and data being executed by the CPU

Why is virtual memory used?

• To make use of cheaper hard disk space

• To give the impression that a computer has more memory than it actually has

• To allow programs from loading when RAM is full

• All of the above

What happens when a computer runs out of RAM?

• 
  Different programs are swapped out of RAM to make room for instructions that are needed

• 
  Instructions that are not being used are transferred to virtual memory

• nstructions are fetched one at a time and some may not be fetched in the near future

• All of these

How does virtual memory help in handling the running out of memory?

• It swaps out different programs from RAM to virtual memory

• It transfers instructions that are not being used to a space on the hard disk

• It frees up space in RAM to allow more efficient allocation of memory

• All of these

Why does a computer slow down when it runs out of memory?

• Because swapping programs between RAM and virtual memory takes time

• Because virtual memory is slower than RAM

• 
  Because instructions that are not being used are stored in virtual memory

• 
  None of the above

What is the purpose of using virtual memory?

• To reduce the cost of physical memory

• To provide a larger memory space than physical memory

• To speed up the memory access time

• To eliminate the need for hard disk storage

How does paging differ from segmentation in memory management?

• Paging divides memory based on logical divisions, while segmentation divides memory into fixed size pages

• Paging and segmentation are the same

• None of the above

• Segmentation divides memory based on logical divisions, while paging divides memory into fixed size pages