Operating System - Study Mode

[#161] The OS used to operate the mobile phone is a
Correct Answer

(B) Embedded OS

Explanation

Solution: The OS used to operate the mobile phone is a Embedded OS. An embedded operating system is a specialized operating system (OS) designed to perform a specific task for a device that is not a computer. The main job of an embedded OS is to run the code that allows the device to do its job.

[#162] UNIX operating system is a(n)
Correct Answer

(D) All of the above

Explanation

Solution: UNIX operating system is a(n) Time sharing operating system, Multi-user operating system, and Multi-tasking operating system.

[#163] The ability of an operating system to control the activities of multiple program at the same time is called
Correct Answer

(A) Multitasking

Explanation

Solution: In computing, multitasking is the concurrent execution of multiple tasks over a certain period of time. New tasks can interrupt already started ones before they finish, instead of waiting for them to end.

[#164] Disk label name can be up to ...... characters
Correct Answer

(C) 11

Explanation

Solution: Disk label name can be up to 11 characters

[#165] ...... is used in operating system to separate mechanism from policy
Correct Answer

(B) Two level implementation

Explanation

Solution: Two level implementation is used in operating system to separate mechanism from policy. It uses two different schedulers, one lower-level scheduler which can only select among those processes in memory to run. That scheduler could be a Round-robin scheduler. The other scheduler is the higher-level scheduler whose only concern is to swap in and swap out processes from memory.