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SYSTEM SOFTWARE - Coggle Diagram

- - - - Proprietary server OS
        
        Windows Server
        
        macOS Server
      - Open source Server OS
        
        Ubuntu
        
        Linux
  - - - Proprietary mobile OS
        
        iOS
        
        Windows (mobile edition)
      - Open source mobile OS
        
        Android
        
        Tizen
  - - - Proprietary desktop OS
        
        Windows
        
        macOS
      - Open source desktop OS
        
        Chrome OS
        
        Linux
  - - - To optimizes the use of RAM
    - - To provides a means to establish an Internet connections
    - - Some OS which are multitasking allows user to run multiple programs concurrently
    - - Operating system often provides users with the capabilities of:
        
        managing files
        
        searching files
        
        viewing images
        
        securing a computer
        
        uninstalling programs
        
        cleaning up disk
        
        defragmenting disks
        
        diagnosing problems
        
        backing up files and disks
        
        setting up screen saver
    - - User interface (UI) controls how users enter data and instructions and how information is displayed on the screen
      - Techniques of UI
        
        Command-line interface
        
        Graphical User Interface (GUI)
    - - To organize and coordinate how multiple users access and share resources on a network
    - - Starting
        
        Cold boot
        
        Warm boot
      - Shutting down
        
        Sleep mode
        
        Hibernate
        
        Shutting down
    - - To access and reports information about various computer resources and devices
- - - - Function
        
        Back-up Utility
        
        Allows user to copy selected files or the entire hard disk to another storage medium
        
        Restore Utility
        
        Restore data from a backup to the original storage location or to replacement device
      - Example
        
        iDrive
        
        iCloud Backup
    - - To protect a computer against viruses by identifying and removing any computer viruses found in memory, on storage media or on incoming files
      - Example
        
        Kaspersky Antivirus
        
        Avira Antivirus
      - A utility program that protects a computer against malware such as virus, worm, and Trojan horse
    - - A utility program that shrinks the size of files
      - Example
        
        WinRaR
        
        WinZip
    - - A program placed on a computer without the user's knowledge that secretly collects information about the user
      - To detects and deletes spyware
      - Example
        
        Spyware Protection
        
        SpyHunter
    - - Disk cleanup is a utility program that searches for and removes unnecessary files
      - To search for and removes unnecessary files such as:
        
        downloaded program files
        
        temporary Internet files
        
        deleted files
        
        unused program files
      - Example
        
        Windows disk cleanup
        
        Avast cleanup premium
    - - To reorganizes files and unused space on a hard disk for optimal efficiency
      - Example
        
        WinContig
        
        MyDefrag
      - A utility program that reorganizes files and unused space on a hard disk so that OS access data more quickly and program runs faster
    - - Helps user to keep track of files and folders such as:
        
        display a list of files
        
        organize files in folders
        
        copy, rename, delete, move, and sort files
        
        create shortcuts
      - Example
        
        Windows explorer
        
        Finder
      - A file manager is a utility that performs function related to file management
    - - To detects and deletes adware
      - Example
        
        AdwCleaner
        
        Bitdefender
      - A software that displays unwanted ads when a user is online, collects marketing data and other information without the user's knowledge