The process of restarting a computer that is already switched on is known as
- A.Cold boot
- B.Warm boot
- C.Logging in
- D.Formatting
Correct answer
Explanation
The correct answer is B, warm boot. A warm boot, also called a soft boot, is the restarting of a computer that is already running, usually through the restart option of the operating system or a reset key combination. The power supply is not interrupted and some of the start-up hardware checks are skipped, so a warm boot is faster than starting from the off state.
Option A, cold boot, is the opposite case: the machine is switched on from a completely powered off state, the full power on self test runs and the operating system is loaded afresh. Option C, logging in, is only the act of proving identity with a user name and password after the operating system is already running, and it does not restart anything. Option D, formatting, prepares a disk for storing data by creating a fresh file system on it and erases what was there.
Read the full article: Software and Operating Systems: Types, Functions and MCQs
Practice Questions
View allWhich of the following is the core part of an operating system that always remains in main memory?
- A.Shell
- B.Kernel
- C.Compiler
- D.Loader
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The kernel is the central part of the operating system and is the portion that is loaded at boot time and stays resident in main memory for as long as the computer is running.
Read the full explanation →Which type of software is permanently stored on a chip and is required before any other program can run?
- A.Application software
- B.Utility software
- C.Firmware
- D.Freeware
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Firmware is software written permanently into a read only memory chip at the time of manufacture.
Read the full explanation →Which scheduling algorithm allots a fixed time slice to every process in rotation and is therefore used in time sharing systems?
- A.First Come First Served
- B.Shortest Job First
- C.Round Robin
- D.Priority scheduling
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In Round Robin scheduling every ready process is given the processor for a fixed period called the time quantum, and when that period expires the process is moved to the back of the queue and the next one is served.
Read the full explanation →UNIX operating system was developed in 1969 at which organisation?
- A.Bell Laboratories
- B.IBM
- C.Microsoft
- D.Apple
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UNIX was developed in 1969 at Bell Laboratories by Ken Thompson and Dennis Ritchie, and it became the model for almost every multi user operating system that followed.
Read the full explanation →The situation in which two processes each hold a resource the other needs and neither can proceed is called
- A.Thrashing
- B.Deadlock
- C.Spooling
- D.Fragmentation
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Deadlock is the state in which every process in a set is waiting for a resource that another process in the same set is holding, so none of them can ever move forward without the operating system stepping in.
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