Podcast
Questions and Answers
Which of the following is NOT a typical function of an operating system?
Which of the following is NOT a typical function of an operating system?
- Executing machine code directly without abstraction (correct)
- File management and storage
- Providing a user interface
- Resource allocation (e.g., CPU time, memory)
A process in the 'Blocked' or 'Waiting' state consumes CPU cycles while waiting for an event.
A process in the 'Blocked' or 'Waiting' state consumes CPU cycles while waiting for an event.
False (B)
Briefly explain the difference between user-level threads and kernel-level threads.
Briefly explain the difference between user-level threads and kernel-level threads.
User-level threads are managed by a thread library in user space, while kernel-level threads are managed directly by the operating system kernel.
In the context of process scheduling, _________ scheduling aims to ensure each process gets a fair share of the CPU over time.
In the context of process scheduling, _________ scheduling aims to ensure each process gets a fair share of the CPU over time.
Match the scheduling algorithm with its primary goal:
Match the scheduling algorithm with its primary goal:
Flashcards
Operating System (OS)
Operating System (OS)
Manages computer hardware and software resources; provides a basis for application programs.
Process
Process
A program in execution; an instance of a running program.
Thread
Thread
A unit of execution within a process; a lightweight process.
Scheduling
Scheduling
Signup and view all the flashcards
Uniprocessor Scheduling
Uniprocessor Scheduling
Signup and view all the flashcards
Study Notes
- An operating system's objectives include managing resources, providing an interface between the user and hardware, and enabling efficient computer operation.
- The functions of an operating system encompass process management, memory management, file system management, I/O management, and security.
- Operating systems have evolved from simple batch systems to more complex time-sharing, multiprogramming, and real-time systems.
- Major advances in OS components include virtual memory, file systems, and the GUI.
- Modern operating systems are characterized by their ability to support multitasking, multiprocessing, and distributed processing.
Process Description and Control
- A process is a program in execution and the fundamental unit of work in an operating system.
- A process can be in one of several states: new, ready, running, waiting, or terminated.
- The process description, or Process Control Block (PCB), contains information about a process, including its state, priority, and memory allocation.
- Process control involves managing process creation, termination, and transitions between states.
- Threads are lightweight processes that share the same address space, and there are user-level threads and kernel-level threads.
- Multicore processors and multithreading allow for parallel execution of threads, enhancing performance.
Scheduling
- Scheduling involves determining which processes or threads should be executed by the CPU.
- Types of scheduling include long-term, medium-term, and short-term scheduling.
- Uniprocessor scheduling algorithms include First-Come, First-Served (FCFS), Shortest Job First (SJF), Priority Scheduling, and Round Robin.
- Multiprocessor scheduling algorithms include load sharing, gang scheduling, and dedicated processor assignment.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
