Operating-System

Overview:

What is an Operating System?

An Operating System (OS) is an interface between a computer user and computer hardware.

• What happens when we turn on computer?

• Services provided by an Operating System?

Types of OS?

• Batched OS:
• Time-Sharing OS:
• Distributed OS:
• Network OS:
• Real-Time OS:

RAM vs ROM

SRAM vs DRAM

PROM, EPROM & EEROM

Virtualization vs Containerisation

BIOS vs UEFI

MBR vs GPT

Compiler

Loader

Linker

Assembler

Interpreter

System Calls

Application Programming Interface

Kernel

Shell

JVM

Booting

MultiProgramming, MultiProcessing, MultiTasking & MultiThreading

Monolithic Architecture vs MicroKernel Mrchitecture

Why Windows kernel is more monolithic & not microkernel?

What happens when we turn on our Computer?

Process Concept

Process vs Program

Different State of process.

Types of Process?

PCB structure in Detail

How does a process look like in memory?

Process vs Thready

Process Scheduling:

Scheduling Queue

Job Queue

Ready Queue

Device Queue

Scheduler

Long-term Scheduler

Short-term Scheduler

Medium-term Scheduler

CPU Bound Process vs I/O Bound Process

What is a Context Switch?

IPC by Shared Memory

IPC by Message Passing

Define Pipe

Maximum number of Zombie process a system can handle?

Synchronization

Why Process Co-ordination/sync is needed?

Physical Address Space vs Logical Address Space

Mutual Exclusion

Critical Section

Critical Section Problem,”Peterson Solution”

Why PreEmptive kernel is better than Non-PreEmptive?

Semaphore

Binary Semaphore/Mutex Locks

Counting Semaphore

Busy Waiting

Spin Lock

Example of Busy waiting & Spin Lock

How to implement Binary Semaphore in real world coding implementation?

What is Deadlock & Starvation?

Bounded Buffer, Reader-winter Problem & Dining Philosopher Problem.

Deadlocks

https://drive.google.com/file/d/1FAxjhyIlsGGouIyCPyR3xqKVgU7mhEmQ/view