Question

RAM consists of 16GB, there are 100 processes, each process is on an average of 100MB each. Will virtual RAM be necessary?

• A. No, because the total memory required (approx. 10 GB) is less than the available 16 GB physical RAM.
• B. Yes, because the OS reserves 10GB by default, leaving insufficient space.
• C. Wrong Option 2: Yes, because 100 processes exceed the multitasking thread limit of physical RAM.
• D. No, because virtual RAM is exclusively used for hard disk storage space, not running processes.

Hint:

Virtual memory acts as backup storage when RAM becomes insufficient. If required memory is already less than available RAM, virtual memory need not be actively used.

Answer 1

The Correct Option is A

Step 1: Calculate total memory requirement.
Each process uses: \[ 100\text{ MB} \] Number of processes: \[ 100 \] Total memory required: \[ 100 \times 100=10000\text{ MB} \] \[ 10000\text{ MB}\approx 10\text{ GB} \]

Step 2: Compare with available RAM.
Available RAM: \[ 16\text{ GB} \] Required RAM: \[ 10\text{ GB} \] Since \[ 10<16 \] the processes can fit into physical memory.

Step 3: Conclusion.
Virtual memory is generally required when physical RAM is insufficient. Here RAM is sufficient. Hence, \[ \boxed{\text{Virtual RAM is not necessary}} \]