Operating System Memory Management

Which of the following is NOT a function of memory management in an operating system?

• Allocating memory to processes

• Protecting memory from unauthorized access

• Scheduling CPU time

• Ensuring efficient memory utilization

What is the main purpose of virtual memory?

• To increase the physical memory of the system

• To simulate additional memory beyond physical RAM

• To enhance the speed of memory operations

• To organize memory into fixed-sized units

What is a page fault in the context of paging?

• Accessing a memory location outside the allocated segment

• Accessing a page not currently in physical memory

• Writing data to a protected segment

• Fragmentation caused by page swapping

Which of the following describes fragmentation where memory blocks are too small to be used?

• External fragmentation

• Internal fragmentation

• Physical fragmentation

• Virtual fragmentation

In which memory management technique is the entire process loaded into a single contiguous block?

• Paging

• Segmentation

• Partitioning

• Swapping

In paging, which component maps logical pages to physical frames?

• Segment table

• Page table

• Memory management unit

• Disk scheduler

Which of the following is true for segmentation?

• Memory is divided into fixed-size pages

• Memory is divided into variable-sized segments

• Logical addresses are divided into page number and offset

• Physical memory must be contiguous

Which type of fragmentation is caused by paging?

• Internal fragmentation

• External fragmentation

• Both internal and external fragmentation

• No fragmentation

What is the main purpose of a segment table?

• To store the base and limit of each segment

• To map logical pages to physical frames

• To store the free and allocated memory blocks

• To monitor memory access violations

In segmented memory, a logical address consists of:

• Frame number and offset

• Segment number and offset

• Page number and frame size

• Base address and limit