Slow Learner Operating System Memory Management Quiz

What is the purpose of the Memory Management Unit (MMU)?

• To manage CPU scheduling

• To map virtual addresses to physical addresses

• To allocate disk space

• To handle input/output operations

Which memory management technique involves dividing memory into fixed-sized blocks?

• Segmentation

• Paging

• Swapping

• Contiguous Allocation

What does the valid-invalid bit in a page table indicate?

• Whether the page is modified

• Whether the page is read-only

• Whether the page is in the process' logical address space

• Whether the page is in the cache

What is external fragmentation?

• Memory that is allocated but not used

• Total memory space exists to satisfy a request but is not contiguous

• Memory that is freed but not returned to the system

• Memory that is used by the operating system only

Which algorithm replaces the page that will not be used for the longest period of time?

• Second-Chance Algorithm

• Optimal Page Replacement

• First-In-First-Out (FIFO)

• Least Recently Used (LRU)

What is the main advantage of demand paging?

• It allows for faster CPU scheduling

• It loads entire processes into memory at once

• It reduces the need for I/O operations

• It requires more memory

What is the purpose of the base and limit registers?

• To track page faults

• To allocate memory for the operating system

• To define the logical address space for a user process

• To manage CPU clock cycles

What does the term 'thrashing' refer to in memory management?

• A process that is waiting for I/O operations

• A process using too much CPU time

• A process frequently swapping pages in and out

• A process that is terminated unexpectedly

Which of the following is a characteristic of segmentation?

• It is less efficient than paging

• It divides memory into fixed-size pages

• It allows for logical units like functions and objects

• It requires contiguous memory allocation

What is the role of the page table in a paging system?

• To store the physical addresses of all processes

• To allocate memory for the operating system

• To translate logical addresses to physical addresses

• To manage the CPU scheduling