CompTIA A+ Core 1 (220-1201)
Hardware, networking, and mobile devices
8
Modules
200
Practice Questions
5
Field Missions
220-1201
CompTIA
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Exam Details
Free Preview — Module 1
Module 1 — Mobile Device Hardware, Displays, and Internal Components
Master the hardware fundamentals of laptops, tablets, and smartphones — from replaceable components to display technologies and embedded sensors.
Understanding Mobile Device Categories
Laptops, tablets, smartphones, 2-in-1s, and wearables — their tradeoffs in portability, serviceability, and performance.
Laptop Replaceable Components and Service Concepts
Batteries, RAM, storage, wireless cards, keyboards, and the repair sequence a technician follows on every job.
Display Technologies and Mobile Screens
LCD vs. OLED, backlight failures, digitizer layers, and diagnosing display symptoms step by step.
Mobile Cameras, Sensors, and Embedded Components
Proximity sensors, gyroscopes, accelerometers, webcams, and how their failure surfaces as user-reported symptoms.
Sample Practice Questions
Question 1
A user reports that a laptop battery percentage never increases even though the charging cable is connected. The laptop also powers off immediately when unplugged. Which component is the MOST likely cause?
If the system runs only while plugged in and shuts off immediately when external power is removed, the battery is not holding a charge or is no longer recognized. The touchpad, webcam, and display inverter do not affect power retention.
Question 2
A technician replaces a laptop wireless card. After reassembly, the system detects the card, but Wi-Fi range is extremely poor. What is the MOST likely cause?
Wireless cards rely on properly attached antenna cables for signal transmission. A loose or disconnected antenna lead causes weak signal strength — a common mistake during reassembly.
Question 3
A smartphone has a visible image on the screen, but touch input does not work at all. Which component has MOST likely failed?
The digitizer is the layer responsible for sensing touch. When the display produces an image but touch is completely unresponsive, the digitizer is the failed component.
Full course includes 8 modules, 200 practice questions, and 5 field missions.
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