macOS Features for CompTIA A+ 220-1102

Finder: the macOS file manager — equivalent to Windows Explorer. Menu bar always at top of screen (application menus change based on active app). Dock: launcher at the bottom (or sides) of screen for frequently used applications. Mission Control (F3 or swipe up with 3 fingers): shows all open windows, Spaces (virtual desktops), and full-screen apps. Spotlight (Cmd+Space): system-wide search for files, apps, settings, web, calculations, and unit conversions. Launchpad: grid view of all installed applications (equivalent to Windows Start menu app list). Notification Center: slide out from right edge for notifications and widgets. System Preferences (macOS Ventura+: System Settings): central control panel for all macOS settings.

Activity Monitor (Applications → Utilities): equivalent to Windows Task Manager. Shows CPU, Memory, Energy, Disk, and Network usage per process. Force Quit: Cmd+Option+Esc to force quit unresponsive applications. Disk Utility (Applications → Utilities): manage disks and volumes, format drives, verify/repair disk permissions and file system, create disk images. First Aid button in Disk Utility checks and repairs the file system. Terminal: macOS command-line interface — uses bash or zsh. macOS is Unix-based, so most Linux commands work. System Information (About This Mac → System Report): detailed hardware and software inventory. Keychain Access: password manager built into macOS — stores Wi-Fi passwords, website credentials, certificates. iCloud Keychain syncs passwords across Apple devices.

Time Machine is macOS's built-in backup solution. Works like File History in Windows but backs up the entire system. Setup: System Preferences → Time Machine → Select Backup Disk (external drive, NAS, or AirPort Time Capsule). Automatic backups: hourly for the past 24 hours, daily for the past month, weekly until the backup drive is full (then oldest backups deleted). Restore files: open Time Machine, use timeline on right edge to navigate back in time, select files and click Restore. Restore entire system: boot to macOS Recovery (Cmd+R at startup) → Restore from Time Machine Backup. Should back up to dedicated external drive or network share — not the same drive being backed up. Always keep Time Machine running — a Mac without Time Machine is unprotected.

FileVault encrypts the entire macOS startup disk using XTS-AES-128 encryption with a 256-bit key. Equivalent to BitLocker on Windows. Setup: System Preferences → Security & Privacy → FileVault → Turn On FileVault. Users are given a recovery key (save to iCloud or record it securely — losing both the password and recovery key = permanent data loss). On Macs with Apple Silicon (M-series) or T2 chip, FileVault is always on (the hardware provides encryption). On older Intel Macs without T2, FileVault must be manually enabled. FileVault-encrypted Macs require login before startup disk mounts. If the login password is forgotten, the FileVault recovery key is required to access data.

Gatekeeper: prevents running software not from the App Store or identified developers. Settings: System Preferences → Security & Privacy → General → Allow apps downloaded from (App Store, App Store and identified developers). Override: right-click → Open (prompts to allow running for non-notarized apps). Notarization: Apple's malware scan for apps distributed outside the App Store. XProtect: Apple's built-in malware scanner (runs silently, updates automatically). System Integrity Protection (SIP): prevents even root/admin accounts from modifying protected system files. Can be disabled from Recovery Mode but should not be disabled in production. Privacy settings: System Preferences → Security & Privacy → Privacy — per-app permissions for Camera, Microphone, Location, Full Disk Access.

Network settings: System Preferences → Network. Wi-Fi, Ethernet, VPN configuration. Network Utility (legacy): ping, traceroute, nslookup, port scan from GUI (deprecated; use Terminal in modern macOS). Sharing: System Preferences → Sharing — File Sharing (SMB/AFP), Screen Sharing (built-in VNC), Remote Login (SSH), Remote Management (Apple Remote Desktop). File sharing from Terminal: SMB shares browsable from Windows. AirDrop: peer-to-peer file transfer between Apple devices via Wi-Fi Direct and Bluetooth. AirPlay: wireless display mirroring to Apple TV or AirPlay-compatible displays. Handoff: start a task on one Apple device and continue on another (requires same iCloud account and Bluetooth/Wi-Fi).

Safe Mode: hold Shift at startup (Apple Silicon: hold power button, then Shift+Continue in Safe Mode). Loads only essential kernel extensions, clears font caches, verifies startup disk. Recovery Mode: Intel Mac: hold Cmd+R at startup. Apple Silicon: hold power button until options appear. Provides: Restore from Time Machine, Reinstall macOS, Disk Utility, Terminal. Internet Recovery: boots macOS Recovery from Apple servers if local recovery partition is missing. NVRAM/PRAM reset (Intel Macs): hold Cmd+Option+P+R at startup for 20 seconds (resets display resolution, time zone, startup disk selection). SMC reset (Intel Macs with T2): hold power button 10 seconds when off. Spinning beach ball (SBOD — Spinning Beach Ball of Death): indicates application or system resource issue — check Activity Monitor. Verbose mode: hold Cmd+V at startup to see boot messages instead of Apple logo.