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

USER SPACE

Human interaction

Shell - interprets tecxt commands sends them to OS to execute
GUI - Graphical User Interface

Power users : Above average compuer users

BASH - Bourne Again Shell

LOGS :
Files that record system events on our computer, just like a system's diary.

BOOT Process :
Booting : To start from nothin and follow a series of steps to reach a end

1. Powered on
2. BIOS/UEFI : initializes computer's hardware to makesure everything is good to go ↔ POST
3. Boot Device check
4. Search for bootloader Bootloader: A small program that loads the operating system
5. Performs more complex program
6. the loads OS
7. Then Kernel loads
8. Drivers loaded
9. Essential System Processes and user space processes launched