What is OS?

Question 1

What is OS?

Answer 1

OS is the middleware between User Applications and Hardware

Question 2

.c files are converted to?

Answer 2

.exe or .out files

Question 3

.c files to .exe files using what?

Answer 3

Compiler

Question 4

Which compiler converts .c to .exe

Answer 4

gcc

Question 5

What type of instruction are present in .exe files?

Answer 5

Assembly Language

Question 6

What is the rule book for assembly language of a CPU

Answer 6

Instruction Set Architecture (ISA)

Question 7

Name some ISAs

Answer 7

x86-64, ARM, RISC - V

Question 8

What is the tool that converts assembly language to Binary Code

Answer 8

Assembler

Question 9

What is the procedure for converting code from .c to binary

Answer 9

CAB -> Compiler, Assembler, Binary

Question 10

Name the working components of CPU?

Answer 10

Registers & Cache

Question 11

Name some registers present in the CPU

Answer 11

PC & Operands Register

Question 12

How are binary insruction executed by the CPU?

Answer 12

It fetches the instruction using the PC.

Flushes the registers with required data.

Decodes and executes the instructions

Stores the result

Question 13

What are the important role of CPU?

Answer 13

Program Memory Management

CPU management

External Devices

Concurrency

Question 14

What does OS do in terms of CPU management?

Answer 14

Initialize PC & Other Registers

Question 15

What does OS do in terms of memory management

Answer 15

Load the program files form disk to memory

Question 16

What does OS do in terms of concurrency?

Answer 16

Run multiple threads concurrently with the same memory space.