Memory Management Questions and Answers

Q: The size of the swap space is decided :

The size of the swap space is decided at the time of operating system installation.Swap space is disk space set aside for pages or processes moved out of main memory. On most systems it is a separate disk partition or a preallocated swap file, created and sized when the disk is partitioned during installation of the operating system.It is not fixed afresh at every start-up or when the swapper is loaded; those simply use the space already configured. The hardware does not decide it either, although the amount of physical memory guides the administrator's choice.

Q: A 32-bit X86 system with Windows operating system will have ................. GB as theoretical maximum size of virtual address space.

The theoretical maximum virtual address space is 4 GB.A 32-bit address can name \(2^{32}\) distinct bytes:\[ 2^{32} = 4{,}294{,}967{,}296\ \text{bytes} = 4\ \text{GB} \]On 32-bit Windows this space is split, by default 2 GB for the process and 2 GB for the system, but the total that 32-bit addresses can reach is 4 GB. 8, 16 and 32 GB would need 33, 34 and 35 address bits, which is the mistake of doubling the answer.

Q: Where does the swap space reside ?

Swap space resides on disk.Swap space is an area of secondary storage, a dedicated partition or a swap file, used to hold pages or whole processes moved out of main memory. It extends the memory available to virtual memory.RAM is the memory being relieved, ROM is read-only and cannot store swapped pages, and on-chip cache is far too small and is managed by hardware.

The size of the swap space is decided :

A.At the time of operating system installation
B.At the time of system start up
C.At the time of loading the swapper process
D.By the hardware

Exam Year(s)

MH SET - 2018, SET Exam - 2018,

Answer: A

The size of the swap space is decided at the time of operating system installation.

Swap space is disk space set aside for pages or processes moved out of main memory. On most systems it is a separate disk partition or a preallocated swap file, created and sized when the disk is partitioned during installation of the operating system.

It is not fixed afresh at every start-up or when the swapper is loaded; those simply use the space already configured. The hardware does not decide it either, although the amount of physical memory guides the administrator's choice.

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A 32-bit X86 system with Windows operating system will have ................. GB as theoretical maximum size of virtual address space.

A.4
B.8
C.16
D.32

Exam Year(s)

MH SET - 2021, SET Exam - 2021,

Answer: A

The theoretical maximum virtual address space is 4 GB.

A 32-bit address can name \(2^{32}\) distinct bytes:

\[ 2^{32} = 4{,}294{,}967{,}296\ \text{bytes} = 4\ \text{GB} \]

On 32-bit Windows this space is split, by default 2 GB for the process and 2 GB for the system, but the total that 32-bit addresses can reach is 4 GB. 8, 16 and 32 GB would need 33, 34 and 35 address bits, which is the mistake of doubling the answer.

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Where does the swap space reside ?

A.RAM
B.Disk
C.ROM
D.On chip cache

Exam Year(s)

MH SET - 2024, SET Exam - 2024,

Answer: B

Swap space resides on disk.

Swap space is an area of secondary storage, a dedicated partition or a swap file, used to hold pages or whole processes moved out of main memory. It extends the memory available to virtual memory.

RAM is the memory being relieved, ROM is read-only and cannot store swapped pages, and on-chip cache is far too small and is managed by hardware.

Discuss in Forum

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