macOS Overview - CompTIA A+ 220-1102 - 1.10

File Formats in Mac OS

  • Understanding file formats is essential when working with apps in Mac OS.

DMG File Format

  • Definition: DMG is the Apple disk image format.

  • Usage: Commonly used for software distribution.

  • Functionality: Upon double-clicking a DMG file:

    • Opens inside Finder.

    • Displays all files within the disk image.

    • Allows users to launch setup programs from the image.

Installer Package (.pkg)

  • Definition: .pkg files serve as installer packages in Mac OS.

  • Comparison: Similar to a setup.exe file in Windows.

  • Usage: Double-clicking a .pkg file initiates a setup program:

    • Prompts questions during installation.

    • Upon completion, software appears as an application bundle (.app file).

  • Application Bundle Management:

    • Appears in the file system as a single file, but can be inspected by right-clicking and selecting "View Package Contents."

    • Allows easy movement or removal by dragging the .app file.

App Management via Apple App Store

  • Management Options:

    • Applications installed from the App Store can be managed directly in the store.

    • Options for updates are available, with automatic background updates possible.

    • Lists all installed apps, enabling users to decide what to keep or remove.

  • Uninstallation:

    • Applications can be removed easily by placing the .app file in the trash.

    • Some apps may require a separate uninstallation program stored in their folder.

Apple IDs in Mac OS

  • Personal Apple ID:

    • Used for authentication and iCloud connection on personal devices.

  • Managed Apple ID:

    • Assigned by employers on company-provided hardware.

    • Managed through Apple Business Manager for integration with corporate systems.

    • Connects to Active Directory and Mobile Device Management (MDM) for application deployment.

Time Machine Backup System

  • Overview:

    • Built-in backup system in Mac OS.

  • Functionality:

    • Backs up all files to a separate repository.

    • Captures changes hourly, daily backups for a month, and then rolls into monthly updates.

    • Continues until drive space is insufficient, at which point it deletes oldest files automatically.

Malware Protection in Mac OS

  • Default Status:

    • No built-in antivirus or anti-malware software included.

  • Third-Party Options:

    • Numerous third-party anti-malware solutions available.

    • Essential to have real-time and on-demand scanning for enhanced security.

  • Security Recommendations:

    • Since Windows hosts the majority of malware, Mac OS includes protective measures.

    • Installing third-party software is advisable; ensure it updates regularly for latest malware signatures.