Solution

The correct answer is option 1

Key Points

Virtualization is a technique where multiple operating systems run simultaneously on a single machine virtually.

These machines can be accessed remotely by different users at the same time.

Here, the same hardware like memory and CPU are utilized by all the operating systems in a systematic manner.

Additional Information

Virtual Memory:

• In computers, the size of the main memory is very less compared to the size of the secondary memory.
• This limits the size of the program and the degree of concurrency.
• The concept of virtual memory is developed to address this problem.
• Here the entire secondary memory can be accessed just like main memory using page replacement algorithms.