Operating Systems · Unit 1
Operating System Fundamentals
Exam-focused notes for Operating System Fundamentals (Operating Systems, BIT204): what the TU syllabus asks and how it has actually been tested, with 7 solved past questions from this unit.
What this unit covers
- Definition and purpose of operating systems
- Operating system as extended machine
- Operating system components
- Types of operating systems
- Batch systems
- Time sharing systems
- Real time systems
- Virtual machines and system protection
Operating system components
Explain about operating system components in brief. [5]
An operating system is made up of several key components that work together to manage hardware and software resources. The main components are described briefly below: --- - A process is a program in execution. - The OS is responsible for creating, scheduli...
Full solved answer →Batch systems
Explain about batch system and time sharing operating systems. [5]
Note: Reference notes were not available for this topic. The following answer is based on standard Operating Systems curriculum as taught in BSc CSIT. --- A batch operating system is one of the earliest types of operating systems where similar jobs (tasks) ...
Full solved answer →Virtual machines and system protection
What is virtual machine? Discuss about system protection. [2+3]
--- A virtual machine (VM) is a software emulation of a physical computer system that provides a virtual environment in which an operating system or application can run as if it were running on dedicated physical hardware. A virtual machine creates an illus...
Full solved answer →Types of operating systems
What are the different types of operating system? Differentiate between Real time and Batch OS.[10]
An Operating System (OS) is system software that manages hardware and software resources and provides services to computer programs. Operating systems are classified into the following types: --- - Jobs with similar requirements are grouped (batched) togeth...
Full solved answer →What is an operating system? Differentiate between time sharing and real time operating system. [5]
An Operating System (OS) is system software that acts as an intermediary between the user and the computer hardware. It manages all hardware resources and provides a platform for application programs to run. Key functions of an OS include: - Process managem...
Full solved answer →Definition and purpose of operating systems
What is an OS? Explain 3-state model of process with neat and clean diagram. [5]
--- An Operating System (OS) is system software that acts as an intermediary between the user and the computer hardware. It manages all hardware resources and provides a platform for application programs to run. Key functions of an OS: - Process management ...
Full solved answer →Time sharing systems
What does time sharing means in multiprogramming? Explain any three types of operating system structure. [5]
Time Sharing (also called multitasking) is a logical extension of multiprogramming. In multiprogramming, the CPU is switched among multiple jobs to maximize CPU utilization. Time sharing goes further by switching the CPU among jobs so frequently that users ...
Full solved answer →Make Unit 1 stick
Practice BIT204 with flashcards & quizzes