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Questions and Answers
What are the basic functions of an operating system?
What are the basic functions of an operating system?
The basic functions of an operating system include process management, memory management, and handling deadlocks.
What are the different types of operating systems discussed in the text?
What are the different types of operating systems discussed in the text?
The different types of operating systems discussed are multiprogramming, batch, time sharing, single user and multiuser, and real-time systems.
What is the difference between non-preemptive and preemptive scheduling strategies?
What is the difference between non-preemptive and preemptive scheduling strategies?
Non-preemptive scheduling allows a process to run until it finishes or blocks itself, while preemptive scheduling allows the operating system to forcibly switch between processes.
What is the purpose of virtual memory in memory management?
What is the purpose of virtual memory in memory management?
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What is the role of the shell in an operating system?
What is the role of the shell in an operating system?
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What is the purpose of system calls in an operating system?
What is the purpose of system calls in an operating system?
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What is the difference between deadlock prevention and deadlock avoidance techniques?
What is the difference between deadlock prevention and deadlock avoidance techniques?
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What is the purpose of pipes and filters in shell scripting?
What is the purpose of pipes and filters in shell scripting?
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What is the role of the grep utility in shell scripting?
What is the role of the grep utility in shell scripting?
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Study Notes
Operating System Concepts
- Introduction to System Software: System software provides a platform for running application software
- Resource Abstraction: OS manages computer resources and provides a abstracted view to the user
- OS Strategies: Types of operating systems include Multiprogramming, Batch, Time Sharing, Single user and Multiuser, Process Control, and Real Time Systems
Process Management
- Process View: Process is a program in execution, with its own address space and resources
- Process Abstraction: OS provides a abstracted view of the process to the user
- Process Hierarchy: Processes are organized in a hierarchical structure
- Thread Model: A thread is a lightweight process that shares the same address space as the parent process
Scheduling
- Scheduling Mechanisms: Non-pre-emptive, Pre-emptive, and Time-Sharing scheduling strategies
- Strategy Selection: Choosing the best scheduling strategy based on system requirements
Memory Management
- Mapping Address Space to Memory Space: OS maps the logical address space to the physical memory space
- Memory Allocation Strategies: Fixed Partition, Variable Partition, Paging, and Virtual Memory
- Virtual Memory: A technique that allows a program to use more memory than physically available
Shell and Shell Scripting
- Shell Introduction: Shell is a command-line interface to interact with the OS
- Shell Scripting: A method of automating tasks using shell commands
- Shell Types: Command-line shells, graphical shells, and hybrid shells
- Shell Editors: Various editors present in Linux, such as Vi, Emacs, and Nano
- Shell Scripting Basics: Writing and executing shell scripts, using shell variables, and system calls
- Shell Scripting Control Structures: If-else, switch, loops, and functions
- Utility Programs: Cut, paste, join, tr, and unique utilities
- Pattern Matching Utility: Grep
Deadlocks
- Deadlock System Model: A system where multiple processes are blocked, waiting for resources
- Deadlock Characterization: Conditions for deadlock to occur: Mutually Exclusion, Hold and Wait, No Preemption, and Circular Wait
- Methods for Handling Deadlocks: Deadlock Prevention, Deadlock Avoidance, and Deadlock Detection
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Description
This quiz covers topics related to system software, resource abstraction, types of operating systems (multiprogramming, batch, time sharing, single user, multiuser), process control, real-time systems, operating system organization, basic functions, process management, and system calls. It also includes factors in operating system design and implementation considerations.
