Operating System - Study Mode

[#356] Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because
Correct Answer

(B) they are initially stored on disk

Explanation

Solution: Microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because they are initially stored on disk

[#357] The CPU, after receiving an interrupt from an I/O device
Correct Answer

(D) branches off to the interrupt service routine after completion of the current instruction

Explanation

Solution: It stands for Interrupt service routine or also known as an interrupt handler. It is a software process invoked by an interrupt request from a hardware device. It handles the request and sends it to the CPU i.e. interrupting the active process.

[#358] Seeks analysis
Correct Answer

(B) is used for analyzing device busy problems

Explanation

Solution: Seeks analysis is used for analyzing device busy problems

[#359] Which is a permanent database in the general model of the compiler?
Correct Answer

(C) Terminal Table

Explanation

Solution: Terminal Table is a permanent database in the general model of the compiler

[#360] What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?
Correct Answer

(B) Multitasking

Explanation

Solution: In Multitasking the operating system of a computer executes several programs concurrently by switching back and forth between them.