Operating Systems Quiz Unit 4

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

• To handle I/O operations

• To provide network connectivity

• To manage CPU scheduling

• To map virtual addresses to physical addresses

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

• Segmentation

• Paging

• Swapping

• Contiguous Allocation

What does the term 'thrashing' refer to in operating systems?

• Excessive context switching

• High page fault rate leading to low CPU utilization

• Overloading the CPU with processes

• Inefficient memory allocation

Which of the following is a method of dynamic memory allocation?

• Best-fit

• All of the above

• First-fit

• Worst-fit

What is the main advantage of using virtual memory?

• Increased physical memory

• Ability to run larger applications than physical memory allows

• Faster access to disk storage

• Simplified memory management

In which memory management technique are pages brought into memory only when needed?

• Demand Paging

• Swapping

• Contiguous Allocation

• Static Paging

What is the role of the base and limit registers in memory management?

• To define the logical address space

• To allocate memory dynamically

• To manage I/O operations

• To handle CPU scheduling

Which of the following is NOT a page replacement algorithm?

• Shortest Job First (SJF)

• First-In-First-Out (FIFO)

• Optimal Page Replacement

• Least Recently Used (LRU)

What is the purpose of a page table?

• To handle disk scheduling

• To manage CPU registers

• To store process control blocks

• To map logical addresses to physical addresses

Which of the following describes segmentation in memory management?

• Using a single contiguous block of memory

• Dividing memory into fixed-size pages

• Dividing memory into variable-sized segments based on logical units

• Swapping processes in and out of memory