Introduction to OS, Its Roles & Types Video Lecture | Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)

FAQs on Introduction to OS, Its Roles & Types Video Lecture - Question Bank for GATE Computer Science Engineering - Computer Science Engineering (CSE)

1. What is an Operating System (OS) and what are its primary functions?
Ans. An Operating System (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. Its primary functions include managing hardware resources (like CPU, memory, and storage), providing user interfaces (like command line or graphical interfaces), ensuring security and access control, facilitating multitasking, and managing files and directories.
2. What are the main types of Operating Systems?
Ans. The main types of Operating Systems include: 1. Batch Operating Systems, which process jobs in batches without user interaction. 2. Time-Sharing Operating Systems, which allow multiple users to share system resources simultaneously. 3. Distributed Operating Systems, which manage a group of independent computers and make them appear as a single system to users. 4. Real-Time Operating Systems (RTOS), which are designed for applications that require timely processing and response. 5. Network Operating Systems, which provide services to computers connected over a network.
3. How does an Operating System provide security?
Ans. An Operating System provides security through various mechanisms such as user authentication, access control, encryption, and firewalls. It ensures that only authorized users can access the system and sensitive data, protects against malware, and enforces user permissions to safeguard resources from unauthorized access or modification.
4. What are the differences between a user interface and a kernel in an OS?
Ans. The user interface is the part of the Operating System that interacts with the user, allowing them to input commands and receive output. This can be a command-line interface (CLI) or a graphical user interface (GUI). The kernel, on the other hand, is the core component of the OS that manages system resources, handles communication between hardware and software, and performs essential tasks like memory management and process scheduling.
5. Why is multitasking important in an Operating System?
Ans. Multitasking is important in an Operating System because it allows multiple processes to run concurrently, improving the efficiency and utilization of system resources. This capability enables users to perform several tasks simultaneously, such as listening to music while browsing the internet, enhancing user experience and productivity by making better use of the CPU and memory.
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