Solution

The correct answer is Option 2.

Key Points

• If the virtual memory size is 32 MB and the physical memory size is 4 MB with a page size of 2 KB, we need to calculate the number of frames available in physical memory.
• Calculation:
  • First, convert the physical memory size into kilobytes (KB):
    • 4 MB = 4 * 1024 KB = 4096 KB
  • Next, divide the physical memory size by the page size to get the number of frames:
    • Number of frames = Physical Memory Size / Page Size
    • Number of frames = 4096 KB / 2 KB = 2048 frames
• Therefore, the number of frames available in physical memory is 2048.

Additional Information

• Virtual Memory:
  • Virtual memory allows a computer to compensate for shortages of physical memory by temporarily transferring data from random access memory (RAM) to disk storage.
  • It uses both hardware and software to enable a computer to run larger applications or multiple applications simultaneously.
• Physical Memory:
  • Physical memory refers to the actual RAM installed in a computer.
  • It is a volatile memory that temporarily stores data and machine code currently being used.
• Page Size:
  • Page size is the size of a page in memory management schemes. It is a fixed-length contiguous block of virtual memory.
  • Page sizes are typically a power of 2, ranging from 512 bytes to several megabytes.