Operating System Top Questions.
An operating system (OS) is software that manages computer hardware and provides a user-friendly interface for software applications. It coordinates the execution of programs, allocates system resources, and handles input/output operations. Operating systems come in various types, including Windows, macOS, Linux, and mobile OS like Android and iOS. They enable users to interact with computers and devices, handling tasks such as file management, multitasking, and security. Operating systems play a vital role in computer functionality, ensuring smooth and efficient operation while abstracting complex hardware details from users and applications.
What is the main function of the command interpreter?
To get and execute the next user-specified command.
The main function of a command interpreter is to get and execute the next user-specified command. Command Interpreter checks for valid command and then runs that command else it will throw an error.
In Operating Systems, which of the following is/are CPU scheduling algorithms?
In Operating Systems, CPU scheduling algorithms are:
i) First Come First Served scheduling
ii) Shortest Job First scheduling
iii) Priority scheduling
iv) Round Robin scheduling
v) Multilevel Queue scheduling
vi) Multilevel Feedback Queue scheduling
All of these scheduling algorithms have their own advantages and disadvantages.
To access the services of the operating system, the interface is provided by the
System calls.
To access services of the Operating System an interface is provided by the System Calls. Generally, these are functions written in C and C++. Open, Close, Read, Write are some of most prominently used system calls.
CPU scheduling is the basis of____
multiprogramming operating systems
Where is the operating system placed in the memory?
either low or high memory (depending on the location of interrupt vector)
If a process fails, most operating system write the error information to a
log file.
If a process fails, most operating systems write the error information to a log file. Log file is examined by the debugger, to find out what is the actual cause of that particular problem. Log file is useful for system programmers for correcting errors.
What does OS X has?
hybrid kernel.
OS X has a hybrid kernel. Hybrid kernel is a combination of two different kernels. OS X is developed by Apple and originally it is known as Mac OS X.
In operating system, each process has its own
In a timeshare operating system, when the time slot assigned to a process is completed, the process switches from the current state to?
Ready state.
In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the Ready State. In a time-sharing operating system, unit time is defined for sharing CPU, it is called a time quantum or time slice. If a process takes less than 1 time quantum, then the process itself releases the CPU.