Operating System Flashcards
Operating System is?
Set of programs that sits between application software and computer hardware
Composed of modular code that may be easily modified w/out having to replace hardware
The Core of an OS is a Kernel
What is CLI
Command Line Interface
32 Bit Processor
x86
Can store 2^32 values
can handle 4gb of memory
Can not run 64 bit apps
64 Bit processor
x64 can store 2^64 values
Can handle approx 17 billing GB of memory
Can handle 32 bit
Android
Open-source OS based on a Linux Kernel
Quick and easy app approval process
iOS
Closed-sourse OS based on BSD Unix
Windows 10
Tablets (Surface Pro)
It is Windows 10 just a lighter version
Cloud Based OS
Google Chrome
- Based on linux kernel
- Centers around Chrome Web Browser
EOL
End of Life - How long an OS is supported by each company
Updates
iOS, Android, and Windows require users to accept
Chrome updates automatically
OSI Model Layers
Physical Data Link Network Transport Session Presentation Application
Physical
Moves bits from hop to the next
Data Link
Moves frames from one node to the next, and is responsible for physical (MAC) addressing
OSI Model
Open System Interconnection
-a conceptual model
Upper Layers on OSI
Application
Presentation
Session