Podcast
Questions and Answers
Which of the following best describes a process?
Which of the following best describes a process?
- A member of process-level multitasking
- An abstraction of a running program (correct)
- A lightweight unit of work schedulable by the operating system
- A thread residing within a regular process
What is the main difference between a process and a thread?
What is the main difference between a process and a thread?
- A process must reside within a regular process, while a thread can be independent
- A process is a lightweight unit of work, while a thread is an abstraction of a running program
- A process is a member of system-level multitasking, while a thread is a member of process-level multitasking (correct)
- A process can share resources with other processes, while a thread cannot
What does a private data structure of a process typically contain?
What does a private data structure of a process typically contain?
- Identity, priority level, and resources
- Identity, priority level, state of execution, and resources (correct)
- State of execution and resources
- Identity and priority level
In what type of operating systems are processes and threads commonly available?
In what type of operating systems are processes and threads commonly available?
How are multiple threads within the same process related to each other?
How are multiple threads within the same process related to each other?
Which type of system commonly implements polled loops as a background task?
Which type of system commonly implements polled loops as a background task?
When are polled loops commonly used in a cyclic code structure?
When are polled loops commonly used in a cyclic code structure?
What is a variation of the polled loop that uses a fixed clock interrupt?
What is a variation of the polled loop that uses a fixed clock interrupt?
What is contact bounce?
What is contact bounce?
In what type of systems are interrupt-driven systems and cyclic code structures discussed?
In what type of systems are interrupt-driven systems and cyclic code structures discussed?
Which type of system commonly implements polled loops as a background task?
Which type of system commonly implements polled loops as a background task?
What is a variation of the polled loop that uses a fixed clock interrupt?
What is a variation of the polled loop that uses a fixed clock interrupt?
When are polled loops commonly used in a cyclic code structure?
When are polled loops commonly used in a cyclic code structure?
What is contact bounce?
What is contact bounce?
In what case does the polled loop poll each cycle for a finite number of times?
In what case does the polled loop poll each cycle for a finite number of times?
Study Notes
Processes and Threads
- A process is best described as a program in execution, including current activity, memory, and system resources.
- The main difference between a process and a thread is that processes have separate memory spaces, while threads share memory space within a process.
Process Data Structure
- A private data structure of a process typically contains the program counter, stack, and memory allocation.
Operating Systems
- Processes and threads are commonly available in modern, multi-user, and multi-tasking operating systems.
Threads Relationship
- Multiple threads within the same process are related to each other by sharing memory space and system resources.
Polled Loops
- Polled loops are commonly used in real-time systems as a background task.
- Polled loops are used in cyclic code structures to continuously check for a specific condition or event.
- A variation of the polled loop that uses a fixed clock interrupt is called a clock-driven loop.
Interrupt-Driven Systems
- Interrupt-driven systems and cyclic code structures are discussed in real-time systems.
Contact Bounce
- Contact bounce refers to the mechanical rebound effect of a switch or button when pressed, causing multiple signals to be sent.
Polled Loop Variations
- In some cases, a polled loop polls each cycle for a finite number of times, known as a timeout.
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Description
Test your knowledge of process management in operating systems with this quiz. Learn about process abstractions, priorities, execution states, and associated resources. Perfect for students and professionals in computer science and IT.
