# I/O Componetns
 - KB/M HID
 - Monitor
 - CPU
 - Memory
 - Storage
 
# storage
## Units of storage
 - and speed

## Type of storage
 - Magnetic Storage
 - Optical
 - Solid State

# MAchine language
 - Binary

# networking explain
 - Explain Protocols
 - TCP
 - UDP
 - MAC Address
 - IP/DNS
 - Network ports
 - Subnetting
 - firewall usage
 - other protocols ( HTTP, FTP, SSH, TELNET)
 - OSI Model
 - VPNs

# Operating System
 - BIOS
 - File system
 - Kernel
 - Drivers
 - explamples of operating systems


# Troubleshooting Hardware
 - RAM
 - CPU
 - MB
 - PSU

# Troubleshooting Network
 - OSI Model