Index

TECHNICAL SUPPORT FUNDAMENTALS

  1. INTRO -> IT
    1. HISTORY OF COMPUTING
    2. DIGITAL LOGIC
    3. COMPUTER ARCHITECTURE LAYER
  2. HARDWARE
    1. The Modern Computer
    2. MOBILE DEVICES
    3. PERIPHERALS
    4. STARTING IT UP
  3. OPERATING SYSTEM
    1. INTO KERNEL
    2. USER SPACE
    3. INSTALLING OS
  4. NETWORKING
    1. INTERNET
  5. SOFTWARE
  6. TROUBLESHOOTING

OPERATING SYSTEM

SSH : Secure shell
A protocol implemented by other programs to securely access one computer from another.
Public(lock) and private key(unlock).
ssh illuminati@192.128.7.3


VPN : Private Network

Remote Connections on Windows:
PuTTy : A free open source software that you can use to make remote connections through several network protocols, including SSH.
22 deafault SSH port
putty.exe -ssh host@ip

RDP : Remote Desktop Protocol(allow remote connection from properties of PC)
mstc.exe

Components of OS :
Whole package that manages computer resources and helps us use it.
KERNEL SPACE : Main Core . Talks directly to hardware . FIle storage .Process Management. Process scheduler . Optimizes memory management.
Process Manager
Memory Manager
File Manager
I/O Manager

USER SPACE : We interact with directly. UI
Applications

MAJORS:
windows ↔ pc
linux ↔ OPEN SOURCE . DISTRUBUTION - UBUNTU DEBIAN REDHAT
mac ↔ APPLE

Mobile OS: ios,android

Android dereived from linux
IOS derived from MACOS