WeCours > IT & Software > Operating Systems & Servers > Systèmes d’exploitation à partir de zéro – Partie 1
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Systèmes d’exploitation à partir de zéro – Partie 1

Apprenez les concepts des systèmes d'exploitation à partir de zéro, car le système d'exploitation constitue le cœur de l'informatique
Instructeur :
Mahefa Abel
English En savoir plus
Vous vous familiariserez avec les concepts de base des systèmes d'exploitation
Vous pourrez challenger l'intervieweur sur des questions liées aux systèmes d'exploitation
Vous verrez l'informatique dans une autre dimension
Vous serez en mesure de répondre à toutes les questions des examens comme GATE, PGEE, ISRO (après avoir terminé toutes les parties du cours OS
Vous pourrez obtenir une note de haut niveau dans votre cursus Systèmes d'exploitation en licence
Comprendre le fonctionnement des systèmes d'exploitation
Comprendre comment se crée un processus
Comprendre comment la planification du processeur est effectuée dans les systèmes d'exploitation
Comprendre les différents algorithmes d'ordonnancement que nous avons dans les systèmes d'exploitation
Comprendre comment le CPU, la mémoire et le disque fonctionnent ensemble
Comprendre la gestion de la mémoire dans les systèmes d'exploitation
Comprendre comment un processus est déplacé du disque dur vers la RAM
comprendre les stratégies d'allocation de mémoire utilisées par les systèmes d'exploitation

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Introduction

1
Introduction
2
Important Tip

Introduction to Operating Systems

1
Introduction to Computer Systems
2
How hardware devices work together
3
Need for Operating Systems from scratch
4
How Input and Output devices work together

Operating System Concepts

1
Program vs Process, States of a process
2
Degree of Multiprogramming
3
Types of Operating Systems
4
An Important point to note
5
Process Control block, Attributes of a process

CPU Scheduling Algorithms - SJF, SRTF, FCFS

1
Types of scheduler, Context switching
2
Various times of a process
3
Types of Scheduling Algorithms
4
SJF Scheduling Algorithm
5
SJF Example 1
6
SJF Example 2
7
Shortest Remaining Time First Scheduling Algorithm
8
Response time explained with example
9
SRTF assignment problem
10
SRTF assignment problem solution
11
Response Time example 2
12
SRTF assignment problem 2
13
SRTF assignment problem 2 solution
14
First Come First Served Scheduling Algorithm
15
FCFS with Context Switching overhead

Comparision of FCFS, SJF and SRTF - Advantages and Disadvantages

1
Starvation
2
Convoy Effect
3
Practical Implementation
4
Throughput

CPU Scheduling Algorithms - LJF, LRTF, Priority-based, HRRN

1
Longest Job First Scheduling Algorithm
2
LJF Example 1
3
Longest Remaining Time First Scheduling Algorithm
4
LRTF Example 1
5
LRTF Example 2
6
LRTF Example 2 continuation
7
Round Robin Scheduling Algorithm
8
RR Example 1
9
RR Example 2
10
RR Important Observations
11
Advantages and Limitations of RR Algorithm
12
Non Preemptive Priority based Scheduling Algorithm
13
Preemptive Priority based Scheduling Algorithm
14
Preemptive Priority based Scheduling Algorithm Continuation
15
SRTF with processes requiring CPU and IO time 2
16
Priority based scheduling with processes requiring CPU and IO time
17
Highest Response Ratio Next Scheduling Algorithm
18
HRRN Example
19
Process State Diagram
20
Suspend Ready State and Suspend IO state
21
Dispatcher

Basics of Number System

1
Basics of Binary Numbers
2
Basics of Binary Numbers

Memory Allocation Techniques

1
Basics of Memory Allocation
2
Contiguous Allocation vs Non Contiguous Allocation
3
Fixed Partitioning
4
Variable Partitioning
5
Memory Allocation Algorithms
6
Problem
7
Problem continued
8
Important point to note
9
Problem
10
Binary addressing revisited
11
Example to explain binary addressing concepts
12
Need for paging

Bonus : How to proceed further

1
Bonus : What to do next
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Absolumentu00a0! Si vous disposez d'une connexion Internet, les cours sur WeCours sont disponibles u00e0 tout moment sur n'importe quel appareil. Si vous n'avez pas de connexion Internet, certains instructeurs permettent u00e9galement u00e0 leurs u00e9tudiants de tu00e9lu00e9charger les cours. instructeur cependant, alors assurez-vous d'u00eatre de leur bon cu00f4tu00e9u00a0!
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Détails des Notes

Étoiles 5
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Étoiles 4
670
Étoiles 3
180
Étoiles 2
20
Étoiles 1
27
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