Apple 9L0 012 Mac Apple Service Practice Test - Set 1

Test your knowledge with this Apple 9L0 012 Mac Apple Service mock exam. Get real-world IT questions and prepare for certification success.

9L0-012: Mac Service Certification - Exam Information

Exam Information

Exam Code

Apple 9L0 012 Mac Apple Service

Exam Title

9L0-012: Mac Service Certification

Vendor

Apple

Difficulty

Advanced

Duration

3 Hours

Question Format

Multiple Choice

Last Updated

March 10, 2025

Validates expertise in servicing and repairing Mac computers.

Practice Test

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1. Which tool is used to replace components in a Mac?

Apple Service Toolkit

System Preferences

Terminal

Keychain Access

2. Which component stores firmware in modern Mac computers?

T2 Security Chip

Hard Drive

RAM

Graphics Card

3. What is the purpose of macOS Internet Recovery?

To reinstall macOS from Apple servers

To update system firmware

To enable safe mode

To reset PRAM

4. Which diagnostic tool is built into Mac hardware?

Apple Hardware Test

Disk Utility

Activity Monitor

Console

5. What is the function of macOS Migration Assistant?

To transfer files between Macs

To back up user data

To install macOS updates

To encrypt the startup disk

6. Which macOS tool is used to manage storage space?

Storage Management

Keychain Access

Spotlight

FileVault

7. Which key boots a Mac into Apple Diagnostics?

D key

Option key

Command + R

Shift key

8. Which Mac feature protects against unauthorized software?

Gatekeeper

Time Machine

AirDrop

iCloud Drive

9. What is the purpose of SMC in a Mac?

To manage power and thermal functions

To control the boot process

To store macOS system files

To update security patches

10. Which port is used to charge most modern MacBooks?

USB-C

Lightning

HDMI

Mini DisplayPort

11. What does PRAM store on a Mac?

System settings like volume and time

Wi-Fi passwords

User account credentials

Installed applications

12. What is a common symptom of a failed Mac logic board?

No power or response

Incorrect screen resolution

Slow Wi-Fi connection

Audio distortion

13. Which macOS feature allows running Windows on a Mac?

Boot Camp

Time Machine

Handoff

iCloud Drive

14. Which shortcut resets NVRAM on a Mac?

Command + Option + P + R

Command + Shift + 4

Command + R

Option + Esc

15. Which Apple service allows remote access to a Mac?

Screen Sharing

AirDrop

Gatekeeper

FileVault

16. Which macOS feature allows users to share files wirelessly?

AirDrop

Handoff

iCloud Drive

Spotlight

17. What is the purpose of macOS Disk Utility?

To manage and repair disks and volumes

To monitor system performance

To encrypt files

To manage user accounts

18. Which macOS feature allows users to search for files quickly?

Spotlight

Finder

Siri

Time Machine

19. What is the function of macOS Console?

To view system logs and diagnostic reports

To manage disks

To monitor CPU usage

To encrypt files

20. Which macOS feature allows users to unlock their Mac with an Apple Watch?

Auto Unlock

Handoff

Continuity Camera

Universal Clipboard

21. What is the purpose of macOS Target Disk Mode?

To use a Mac as an external hard drive

To boot into recovery mode

To reset SMC

To enable guest user mode

22. Which macOS feature allows users to copy and paste across Apple devices?

Universal Clipboard

Handoff

AirDrop

Continuity Camera

23. What is the function of macOS Activity Monitor?

To monitor system performance and processes

To manage disks

To encrypt files

To manage user accounts

24. Which macOS feature allows users to scan documents using an iPhone or iPad?

Continuity Camera

Handoff

Universal Clipboard

AirDrop

25. What is the purpose of macOS Safe Boot?

To start up with only essential kernel extensions

To enable guest user mode

To reset PRAM

To disable all network connections

26. Which tool is used to perform hardware diagnostics on Mac computers at Apple Stores?

AST 2 (Apple Service Toolkit 2)

Apple Configurator

System Information

Terminal

27. What is the first step when replacing a MacBook Pro battery?

Disconnect the battery connector

Remove the display assembly

Unscrew the logic board

Drain the battery completely

28. Which component requires special calibration after replacement in iMacs?

Display panel

SSD

RAM

Power supply

29. What does the amber light indicate on a MagSafe charger?

The battery is charging

There is a power surge

The charger is faulty

The Mac is in sleep mode

30. Which screwdriver is needed to open most modern MacBooks?

Pentalobe

Phillips

Torx

Flathead

31. What is the purpose of the Mac thermal management system?

To prevent overheating and throttle performance

To increase battery life

To enable faster charging

To improve Wi-Fi reception

32. Which Mac component is most likely to fail if the computer randomly shuts down?

Power management IC

Touch ID sensor

Webcam

Speakers

33. What does DFU mode stand for in Apple devices?

Device Firmware Update

Direct Firmware Upgrade

Data File Utility

Disk Format Utility

34. Which tool is used to remove adhesive when replacing a MacBook battery?

Adhesive remover cards

Isopropyl alcohol

Plastic pry tool

Compressed air

35. What is the maximum operating temperature for most Mac computers?

95°F (35°C)

85°F (29°C)

105°F (40°C)

75°F (24°C)

36. Which component would you check first if a MacBook has no display but powers on?

Display backlight

SSD

Keyboard

Trackpad

37. What is the purpose of the T2 Security Chip in Macs?

Hardware encryption and secure boot

Graphics processing

Wi-Fi connectivity

Battery management

38. Which diagnostic LED indicator is found on Mac logic boards?

ADP_LED

CPU_LED

RAM_LED

GPU_LED

39. What is the first step in troubleshooting a Mac that won't charge?

Try a known-good charger

Reset SMC

Replace battery

Check System Preferences

40. Which component stores the serial number in modern Macs?

T2 chip or System Management Controller

SSD

RAM

Power supply

41. 🛠️ A customer reports their MacBook Pro screen has "staingate" issues. What is the correct action?

Check for display replacement program eligibility

Clean with isopropyl alcohol

Replace the entire top case

Update macOS

42. 🛠️ A MacBook Air fan is constantly running at high speed. What should you check first?

Activity Monitor for CPU usage

Battery health

Wi-Fi signal strength

Display brightness

43. 🛠️ During a display replacement, you notice the webcam isn't working. What likely happened?

Flex cable wasn't reconnected properly

T2 chip needs reset

System Preferences needs update

SMC needs reset

44. 🛠️ A Mac won't boot after liquid spill. What's the first repair step?

Disconnect battery and dry components

Try Internet Recovery

Replace logic board immediately

Reset PRAM

45. 🛠️ A customer complains of keyboard repeating letters. What's the likely issue?

Faulty keyboard (butterfly mechanism)

Software bug

Bluetooth interference

Needs SMC reset

46. Which screw size is commonly used in MacBook assemblies?

1.2mm

2.0mm

3.5mm

5.0mm

47. What is the purpose of the MacBook clamshell sensor?

Detect when lid is closed for sleep mode

Measure display angle

Activate FaceTime camera

Control keyboard backlight

48. Which component is responsible for Touch ID functionality?

T2 Security Chip

SMC

RAM

Power management IC

49. What does a flashing question mark at startup indicate?

No bootable operating system found

Faulty RAM

Corrupted PRAM

Failed logic board

50. Which tool is used to check Mac hardware warranty status?

Apple Service Toolkit or checkcoverage.apple.com

System Information

Disk Utility

Terminal

51. What is the recommended way to clean a MacBook display?

Microfiber cloth with water only

Isopropyl alcohol

Glass cleaner

Compressed air

52. Which component would cause a Mac to not recognize USB devices?

USB hub IC

RAM

SSD

Keyboard controller

53. What is the purpose of the MacBook ambient light sensor?

Adjust keyboard backlight and display brightness

Enable Face ID

Measure temperature

Detect motion

54. Which diagnostic tool provides the most detailed hardware information?

Apple Service Toolkit diagnostics

System Information

Disk Utility

Activity Monitor

55. What is the first thing to check if Touch Bar isn't working?

Flex cable connection

macOS version

PRAM

Display settings

56. 🛠️ A MacBook Pro has distorted audio. What would you check first?

Speaker connections

Bluetooth settings

SMC

PRAM

57. 🛠️ During a battery replacement, you notice swelling. What safety precaution is most important?

Store battery in fireproof container

Wear gloves

Use metal tools

Work in humid environment

58. 🛠️ A customer reports their Mac gets extremely hot. What should you check first?

Fan operation and vents

Display brightness

Wi-Fi usage

Keyboard backlight

59. 🛠️ After a logic board replacement, the Mac won't power on. What did you likely forget?

Connect power button cable

Update macOS

Reset PRAM

Replace SSD

60. 🛠️ A MacBook keyboard types wrong characters. What would you check before replacing?

Keyboard input source in System Preferences

Battery health

Display cable

RAM

61. What is the purpose of the MacBook force touch trackpad?

Pressure-sensitive input with haptic feedback

Fingerprint recognition

Gesture control

Wireless charging

62. Which component would cause a Mac to not recognize an external display?

DisplayPort controller

RAM

SSD

Keyboard

63. What is the recommended way to store Mac components during repair?

Anti-static bags and labeled containers

Loose on workbench

Metal trays

Paper envelopes

64. Which tool is used to remove thermal paste during CPU replacement?

Isopropyl alcohol and lint-free cloth

Compressed air

Metal scraper

Water

65. What does a solid amber light on MagSafe indicate during startup?

Insufficient power for startup

Battery is fully charged

Hardware failure

Software update needed

66. 🛠️ A MacBook won't recognize any USB-C devices. What would you check first?

Try different USB-C ports

Replace logic board

Update macOS

Reset PRAM

67. 🛠️ During a repair, you strip a screw. What is the best next step?

Use rubber band or special extraction tool

Drill out the screw

Force prying

Skip reassembly

68. 🛠️ A customer reports their Mac randomly restarts. What diagnostic would you run first?

Apple Diagnostics (D key at boot)

Disk Utility

System Preferences

Activity Monitor

69. 🛠️ After replacing a MacBook keyboard, some keys don't work. What likely happened?

Flex cable not seated properly

Software bug

Wrong keyboard model

Needs PRAM reset

70. 🛠️ A Mac mini won't output video. What would you check first?

Try different cable and monitor

Replace logic board

Reset SMC

Update macOS

71. What is the purpose of the MacBook Pro Touch Bar?

Context-sensitive OLED control strip

Secondary display

Fingerprint scanner

Wireless charging surface

72. Which component would cause a Mac to not wake from sleep?

Faulty RAM

SSD

Webcam

Speakers

73. What is the recommended torque for MacBook screws?

1.2-1.4 Nm

0.5 Nm

2.0 Nm

As tight as possible

74. Which tool is used to check Mac component serial numbers?

Apple Service Toolkit

System Information

Disk Utility

Terminal

75. What does a folder with question mark icon indicate at startup?

Missing or corrupted operating system

Faulty RAM

Bad SSD

No power

76. Which component would cause a Mac to not recognize internal storage?

SSD controller

RAM

Wi-Fi card

Keyboard

77. What is the purpose of the MacBook Pro liquid contact indicators?

Detect liquid exposure for warranty purposes

Measure humidity

Control cooling

Monitor battery health

78. Which diagnostic would you run for a Mac with graphical glitches?

Apple Diagnostics and AHT

Disk Utility

System Preferences

Activity Monitor

79. What is the first step when replacing a MacBook display assembly?

Disconnect battery

Remove screws

Pry open display

Reset SMC

80. Which component would cause a Mac to not charge but otherwise work?

DC-in board

RAM

SSD

Keyboard

The Apple 9L0 012 Mac Apple Service certification is a globally recognized credential for IT professionals. This practice test helps you prepare by covering key topics like hardware, networking, troubleshooting, and security.

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Apple 9L0 012 Mac Apple Service Practice Test - Set 1

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