MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -False, An operating system (OS) is system software that manages or ensures computer hardware, software resources, and provides common services for computer programs. It can not ensure the computer system components like hard disk and RAM never crash or malfunction.

Detailed explanation-2: -The operating system uses several software techniques to manage memory. All memory areas, allocated or available, are preceded and followed by structures known as memory links. These links contain information about the area that they enclose.

Detailed explanation-3: -An operating system manages the resources like disk drives, memory and processors. Any device inside the computer is managed by the operating system. The operating system manages running applications or programs, called processes.

Detailed explanation-4: -Memory management at the OS level. As part of this operation, an OS might use swapping to accommodate more processes. Swapping is an approach to memory management in which the OS temporarily swaps a process out of main memory into secondary storage so the memory is available to other processes.