Memory Management MCQs Questions Answers

By: Prof. Dr. Fazal Rehman | Last updated: April 16, 2025

1. Instructions fetched by the CPU according to the value of —— from memory?
(A) Program status word
(B) Status register
(C) Program counter
(D) Instruction register

2. —– is called a memory buffer and it is used to contain a speed differential.
(A) Cache
(B) Accumulator
(C) Disk buffer
(D) Stack pointer

3. The address generated by the CPU is:
(A) Absolute address
(B) Logical address
(C) Physical address
(D) MAC address

4. Which of the following option is true for virtual to physical address run-time mapping?
(A) CPU
(B) Operating system
(C) Memory management unit
(D) PCI

5. —— is used to point the address of a page table in memory.
(A) Page register
(B) Program counter
(C) Stack pointer
(D) Page table base register

6. ——– address is always dealt with by the program.
(A) Absolute
(B) Relative
(C) Logical
(D) Physical

7. ——- is contained by the page table.
(A) Page size
(B) Base address of every page
(C) Page offset
(D) Page

8. For ——–, the page table is maintained by the Operating System.
(A) Each instruction
(B) Each process
(C) Each thread
(D) Each address

9. The operating system is in?
(A) High memory
(B) System bus
(C) Either A or D (depending on the location of interrupt vector)
(D) Low memory

10. Relocation registers are used to:
(A) Provide a different address space to processes
(B) Provide less address space to processes
(C) Protect the address spaces of processes
(D) Provide more address space to processes

11. With limit registers and relocation, each logical address must be _______ the limit register.
(A) Not equal to
(B) Equal to
(C) Greater than
(D) Less than

12. The code that ——- is Transient operating system code.
(A) Stays in the memory always
(B) Comes and goes as needed
(C) Never enters the memory space
(D) Is not easily accessible

13. The size of the operating system during program execution is ——— while using transient code.
(A) Changed
(B) Increased
(C) Maintained
(D) Decreased

14. Each partition may contain ________ when memory is divided into several fixed-sized partitions.
(A) Multiple processes at once
(B) Exactly one process
(C) Two processes
(D) At least one process

15. The degree of multiprogramming is bounded to which extent in fixed-sized partitions?
(A) All of these
(B) The memory size
(C) The CPU utilization
(D) The number of partitions

16. The strategies like the first fit, best fit, and worst fit are used to select a ______.
(A) Process from a queue to put in storage
(B) Process from a queue to put in memory
(C) Processor to run the next process
(D) Free hole from a set of available holes

17. The number of ——- can be granted by the Owner of the address space.
(A) Computers
(B) Modules
(C) Pages
(D) Devices

18. To load and store the system data from memory ——- is used.
(A) Register
(B) RAM
(C) ROM
(D) Buses

19. The stack pointer is a register that points to the:
(A) Push of the stack
(B) Bottom of the stack
(C) Top of the stack
(D) Pop of the stack

20. To read the ———— I/O instruction transfer is used.
(A) Information
(B) Instructions
(C) Description
(D) Data