Memory management is a fundamental aspect of operating systems that ensures efficient utilization of a computer’s memory resources. It plays a crucial role in maintaining system stability and performance. we’ve compiled a set of Memory management MCQ multiple-choice questions to help you understand the key concepts of memory management in operating systems. Whether you’re a student, an aspiring IT professional, or simply interested in enhancing your knowledge, these MCQs are designed to be informative . Test your memory management expertise and expand your understanding of this critical operating system function.
Which of the following is responsible for translating logical addresses to physical addresses in memory management?
A. Memory Unit
B. CPU
C. Memory Management Unit (MMU)
D. Operating System
Answer: C. Memory Management Unit (MMU)
What is the primary purpose of memory management in an operating system?
A. To allocate memory to processes
B. To ensure memory protection
C. To optimize memory usage
D. All of the above
Answer: D. All of the above
What is the term used to describe a memory management technique that allows multiple programs to reside in memory simultaneously?
A. Virtual memory
B. Paging
C. Segmentation
D. Swapping
Answer: A. Virtual memory
Which of the following is an advantage of using demand paging in memory management?
A. Reduced memory access time
B. Higher CPU utilization
C. Efficient use of physical memory
D. Lower disk space requirements
Answer: C. Efficient use of physical memory
Which memory management scheme uses fixed-size partitions for allocating memory to processes?
A. Paging
B. Segmentation
C. Contiguous memory allocation
D. Swapping
Answer: C. Contiguous memory allocation
In paging, what is the smallest unit of data that is transferred between main memory and secondary storage?
A. Page
B. Frame
C. Block
D. Segment
Answer: A. Page
Which of the following is a disadvantage of using segmentation in memory management?
A. Internal fragmentation
B. External fragmentation
C. Inefficient memory utilization
D. Limited address space
Answer: B. External fragmentation
Which of the following algorithms is used to select a page for replacement in the page replacement policy?
A. First-In-First-Out (FIFO)
B. Least Recently Used (LRU)
C. Optimal
D. All of the above
Answer: D. All of the above
What is the purpose of the Translation Lookaside Buffer (TLB) in memory management?
A. To store the mapping between logical and physical addresses
B. To speed up the translation of logical addresses
C. To prevent page faults
D. To manage the page table entries
Answer: B. To speed up the translation of logical addresses
Which memory management technique allows a process to be executed even if it is not completely loaded into memory?
A. Demand paging
B. Swapping
C. Segmentation
D. Page replacement
Answer: A. Demand paging
In a paged memory management system, how is the logical address divided?
A. Into pages
B. Into frames
C. Into blocks
D. Into segments
Answer: A. Into pages
What is the term used to describe the situation when a process is requesting more memory than is available in the system?
A. Thrashing
B. Fragmentation
C. Overcommitting
D. Page fault
Answer: B. Fragmentation
Which of the following memory management techniques allows different processes to share the same physical memory addresses?
A. Paging
B. Segmentation
C. Swapping
D. Virtual memory
Answer: D. Virtual memory
What is the purpose of the page table in memory management?
A. To store the physical addresses of pages
B. To store the logical addresses of pages
C. To map logical addresses to physical addresses
D. To manage the allocation of pages
Answer: C. To map logical addresses to physical addresses
Which of the following is a disadvantage of using the First-In-First-Out (FIFO) page replacement algorithm?
A. It suffers from the Belady’s Anomaly
B. It may not always result in the optimal solution
C. It requires a complex data structure
D. It is slow and inefficient
Answer: A. It suffers from the Belady’s Anomaly
What is the purpose of the Memory Management Unit (MMU) in memory management?
A. To manage the allocation of physical memory
B. To translate logical addresses to physical addresses
C. To manage the page table entries
D. To prevent external fragmentation
Answer: B. To translate logical addresses to physical addresses
Which memory management technique allows a process to be larger than the available physical memory?
A. Paging
B. Segmentation
C. Swapping
D. Virtual memory
Answer: D. Virtual memory
What is the primary goal of the page replacement policy in memory management?
A. To minimize the number of page faults
B. To maximize CPU utilization
C. To minimize the execution time of processes
D. To prevent external fragmentation
Answer: A. To minimize the number of page faults
Which of the following is an advantage of using the Least Recently Used (LRU) page replacement algorithm?
A. It always results in the optimal solution
B. It is easy to implement
C. It reduces the number of page faults
D. It requires less memory overhead
Answer: C. It reduces the number of page faults
What is the purpose of the Swapping technique in memory management?
A. To allocate memory to processes
B. To prevent page faults
C. To balance the load among processes
D. To allow processes to be temporarily moved out of memory
Answer: D. To allow processes to be temporarily moved out of memory
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