CompTIA A+ Core 1 (220-1101) Exam 2026: Professional
Certification Practice Test — Hardware, Networking, Mobile
Devices, Virtualization & Cloud Computing, and Hardware &
Network Troubleshooting — 190 Multiple-Choice Questions with
Answers & Detailed Rationales
DOMAIN 1: Mobile Devices (Questions 1–25)
Question 1
A field technician is asked to replace a failing battery in a modern ultrabook. Upon opening
the chassis, the technician notices the battery is secured with adhesive and has a multi-pin
connector. Which type of battery is MOST likely installed?
A. Nickel-Cadmium (NiCd)
B. Lithium-Ion (Li-Ion)
C. Nickel-Metal Hydride (NiMH)
D. Alkaline
Correct Answer: B
Explanation: Modern ultrabooks use Lithium-Ion batteries due to high energy density, low
weight, and no memory effect, making them ideal for thin form factors.
Question 2
A user reports that their smartphone display shows a faint image even when the backlight
appears off, and colors look washed out. Which display technology is MOST likely used in this
device?
,A. IPS LCD
B. TN LCD
C. OLED
D. AMOLED
Correct Answer: A
Explanation: IPS LCDs can exhibit backlight bleed and washed-out colors; faint images with
backlight issues suggest LCD rather than self-emissive OLED technology.
Question 3
A technician must connect a laptop to a projector that only supports VGA. The laptop has
only USB-C and HDMI ports. Which solution is MOST appropriate?
A. USB-C to VGA adapter
B. HDMI to DVI cable
C. DisplayPort to HDMI cable
D. USB-A to VGA converter
Correct Answer: A
Explanation: A USB-C to VGA adapter converts the digital USB-C signal to analog VGA,
enabling connection to legacy projectors without native VGA ports.
Question 4
A user wants to add cellular connectivity to a laptop that lacks a built-in WWAN module.
Which component should the technician install?
,A. Wi-Fi 6E card
B. Bluetooth 5.2 adapter
C. LTE/5G M.2 modem
D. NFC module
Correct Answer: C
Explanation: WWAN connectivity requires an LTE or 5G M.2 modem, which provides cellular
data access independent of Wi-Fi networks.
Question 5
A technician is configuring a tablet for a healthcare worker who needs to take notes with a
stylus. Which specification is MOST important?
A. Refresh rate
B. Digitizer sensitivity and pressure levels
C. Screen resolution
D. Battery capacity
Correct Answer: B
Explanation: Stylus functionality depends on digitizer pressure sensitivity and palm rejection,
which determine writing accuracy and natural feel.
Question 6
, A user complains that their laptop trackpad cursor jumps erratically. Which action should the
technician take FIRST?
A. Replace the trackpad
B. Reinstall the operating system
C. Check for debris or moisture on the trackpad surface
D. Update the BIOS
Correct Answer: C
Explanation: Erratic cursor movement often results from debris, moisture, or oily residue;
cleaning the surface is the least invasive first step.
Question 7
A technician is replacing a laptop keyboard. The replacement keyboard has a different ribbon
cable connector size. What should the technician do?
A. Force the connector into place
B. Order the correct keyboard model for the laptop
C. Cut the ribbon cable to fit
D. Use tape to secure the connection
Correct Answer: B
Explanation: Keyboard ribbon connectors are model-specific; forcing an incompatible
connector can damage the motherboard, so the correct part must be ordered.
Question 8
Certification Practice Test — Hardware, Networking, Mobile
Devices, Virtualization & Cloud Computing, and Hardware &
Network Troubleshooting — 190 Multiple-Choice Questions with
Answers & Detailed Rationales
DOMAIN 1: Mobile Devices (Questions 1–25)
Question 1
A field technician is asked to replace a failing battery in a modern ultrabook. Upon opening
the chassis, the technician notices the battery is secured with adhesive and has a multi-pin
connector. Which type of battery is MOST likely installed?
A. Nickel-Cadmium (NiCd)
B. Lithium-Ion (Li-Ion)
C. Nickel-Metal Hydride (NiMH)
D. Alkaline
Correct Answer: B
Explanation: Modern ultrabooks use Lithium-Ion batteries due to high energy density, low
weight, and no memory effect, making them ideal for thin form factors.
Question 2
A user reports that their smartphone display shows a faint image even when the backlight
appears off, and colors look washed out. Which display technology is MOST likely used in this
device?
,A. IPS LCD
B. TN LCD
C. OLED
D. AMOLED
Correct Answer: A
Explanation: IPS LCDs can exhibit backlight bleed and washed-out colors; faint images with
backlight issues suggest LCD rather than self-emissive OLED technology.
Question 3
A technician must connect a laptop to a projector that only supports VGA. The laptop has
only USB-C and HDMI ports. Which solution is MOST appropriate?
A. USB-C to VGA adapter
B. HDMI to DVI cable
C. DisplayPort to HDMI cable
D. USB-A to VGA converter
Correct Answer: A
Explanation: A USB-C to VGA adapter converts the digital USB-C signal to analog VGA,
enabling connection to legacy projectors without native VGA ports.
Question 4
A user wants to add cellular connectivity to a laptop that lacks a built-in WWAN module.
Which component should the technician install?
,A. Wi-Fi 6E card
B. Bluetooth 5.2 adapter
C. LTE/5G M.2 modem
D. NFC module
Correct Answer: C
Explanation: WWAN connectivity requires an LTE or 5G M.2 modem, which provides cellular
data access independent of Wi-Fi networks.
Question 5
A technician is configuring a tablet for a healthcare worker who needs to take notes with a
stylus. Which specification is MOST important?
A. Refresh rate
B. Digitizer sensitivity and pressure levels
C. Screen resolution
D. Battery capacity
Correct Answer: B
Explanation: Stylus functionality depends on digitizer pressure sensitivity and palm rejection,
which determine writing accuracy and natural feel.
Question 6
, A user complains that their laptop trackpad cursor jumps erratically. Which action should the
technician take FIRST?
A. Replace the trackpad
B. Reinstall the operating system
C. Check for debris or moisture on the trackpad surface
D. Update the BIOS
Correct Answer: C
Explanation: Erratic cursor movement often results from debris, moisture, or oily residue;
cleaning the surface is the least invasive first step.
Question 7
A technician is replacing a laptop keyboard. The replacement keyboard has a different ribbon
cable connector size. What should the technician do?
A. Force the connector into place
B. Order the correct keyboard model for the laptop
C. Cut the ribbon cable to fit
D. Use tape to secure the connection
Correct Answer: B
Explanation: Keyboard ribbon connectors are model-specific; forcing an incompatible
connector can damage the motherboard, so the correct part must be ordered.
Question 8
