MCQs on Segmentation in Memory Management

What is segmentation in memory management?

• Breaking memory into equal-sized blocks called pages

• Breaking memory into variable-sized blocks called segments

• Mapping logical memory directly to physical memory

• Using fixed block sizes to store data

What does a segment map table contain?

• The base address of each segment in logical memory

• The offset value for each segment

• The segment number, size, and start address in physical memory

• The number of frames used by a segment

In segmentation, what is the primary purpose of the offset value?

• To define the size of a segment

• To indicate the address of the segment in physical memory

• To define the address of a segment in logical memory

• To manage external fragmentation

Which of the following is a key difference between paging and segmentation?

• Paging uses variable-size blocks, while segmentation uses fixed-size blocks

• Segmentation uses variable-size blocks, while paging uses fixed-size blocks

• Segmentation reduces external fragmentation, while paging reduces internal fragmentation

• Segmentation has less memory overhead compared to paging

What happens when a segment is loaded into physical memory?

• It is divided into pages

• It becomes a contiguous block of memory

• It cannot be accessed by the CPU

• It is stored at random locations

What is one advantage of segmentation over paging?

• It minimizes the risk of external fragmentation

• It reduces the risk of internal fragmentation

• It allows separation of procedures and associated data

• It does not require a segment map table

In which memory management scheme does a user provide the address in two parts (segment number and offset)?

• Paging

• Segmentation

• Swapping

• Virtual memory

What is external fragmentation?

• Unused space within a segment

• Unused space between segments in memory

• Wasted space inside a page

• Fragmentation caused by paging

Which of the following is a disadvantage of segmentation?

• Risk of internal fragmentation

• Harder to manage memory dynamically

• Risk of external fragmentation

• Fixed segment size for all data

Which of the following is a characteristic of a paging system?

• The address provided by the user consists of a segment number and offset

• Pages are of variable size

• Pages are of fixed size

• Segments can be dynamically sized