SSC CGL Exam > SSC CGL Videos > Computer Awareness and Proficiency > Operating System MCQs (Part-2)
Operating System MCQs (Part-2) Video Lecture | Computer Awareness and Proficiency - SSC CGL
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FAQs on Operating System MCQs (Part-2) Video Lecture - Computer Awareness and Proficiency - SSC CGL
| 1. What are the main functions of an operating system? |  |
| 2. What is the role of a device driver in an operating system? | |
Ans. A device driver is a software program that allows the operating system to communicate with hardware devices. It acts as a translator between the operating system and the hardware, enabling them to work together seamlessly.
| 3. How does virtual memory work in an operating system? | |
Ans. Virtual memory is a memory management technique that allows the operating system to use a portion of the hard drive as if it were RAM. When the physical RAM is full, the operating system transfers data to the virtual memory, freeing up space in the RAM for other processes.
| 4. What is the difference between multi-tasking and multi-processing in an operating system? | |
Ans. Multi-tasking allows multiple tasks to run concurrently on a single processor, switching between them rapidly. Multi-processing, on the other hand, involves multiple processors working together to execute tasks simultaneously, increasing overall system performance.
| 5. How does an operating system ensure system security? | |
Ans. An operating system ensures system security by implementing user authentication mechanisms, access control policies, encryption techniques, firewall protection, and regular software updates to patch security vulnerabilities.
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Video Description: Operating System MCQs (Part-2) for SSC CGL 2025 is part of Computer Awareness and Proficiency preparation.
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