CompTIA A+ 220-901 Practice Exam | Questions And
Correct Answers (Verified Answers) Plus Rationale 2026
Q&A | Instant Download Pdf
1. A technician needs to run a diagnostic DVD on a laptop running Windows 8.1. After
setting the boot order in the UEFI BIOS to the internal DVD-RW drive, the laptop still boots
into Windows. Which setting needs to be adjusted?
• A) TPM
• B) Virtualization
• C) Secure Boot
• D) UEFI BIOS password
Answer: C
Secure Boot prevents unauthorized boot devices from loading. Disabling Secure Boot or
enabling legacy/CSM boot allows booting from DVD.
2. A technician connects a second monitor to a desktop. It is physically located to the right
of the existing monitor, but the mouse pointer moves to the second monitor by moving to
the left edge of the screen. Which display setting needs to be adjusted?
• A) Scaling
• B) Rotation
• C) Position
• D) Resolution
, Answer: C
The display position/orientation setting in display properties allows dragging monitor icons to
match physical placement.
3. Which cable types are MOST likely used to connect an external hard drive? (Select TWO).
• A) Molex
• B) SPDIF
• C) eSATA
• D) HDMI
• E) USB 3.0
• F) CAT6e
Answer: C, E
eSATA and USB 3.0 are common external drive interfaces. eSATA provides SATA speeds
externally; USB 3.0 offers broad compatibility.
4. Which features should be considered when selecting a power supply for a high-end
gaming PC? (Select THREE).
• A) Mini-ITX form factor
• B) High number of connectors
• C) 24-pin main connector
• D) 20-pin main connector
• E) 350-450 watts of power
• F) Dual 12v rails
Answer: B, C, F
*High-end gaming PCs need robust power delivery: multiple connectors for components,
24-pin main connector (modern motherboards), and dual 12V rails for stable power*.
5. What is required during the installation of a digitizer?
,• A) Must be connected to the Internet
• B) Must be cleaned
• C) Must have the latest software installed
• D) Must be calibrated
Answer: D
Digitizers (touchscreens/stylus input) require calibration after installation to map input
coordinates to the display correctly.
6. A technician is troubleshooting an expansion card that receives faxes over a VoIP line.
The line connected to the expansion card is MOST likely which cable type?
• A) Coaxial
• B) CAT3
• C) CAT5
• D) Multi-mode fiber
• E) Single-mode fiber
Answer: C
*VoIP lines use standard Ethernet (CAT5/CAT5e/CAT6). Fax over VoIP is transmitted over the
IP network using CAT5 cabling*.
7. For which printer type should a technician obtain a maintenance kit containing a fuser,
transfer roller, and pickup rollers?
• A) Thermal
• B) Impact
• C) Inkjet
• D) Laser
, Answer: D
Laser printers use fuser assemblies, transfer rollers, and pickup rollers as
consumable/maintenance items. These are not found in other printer types.
8. Which cable connection type is an example of a mini DIN?
• A) BNC
• B) PS/2
• C) RCA
• D) DB9
Answer: B
*PS/2 connectors (keyboard/mouse) are 6-pin mini-DIN connectors. BNC is coaxial, RCA is
phono, DB9 is D-sub serial*.
9. For a single-threaded task, which CPU characteristic is MOST important?
• A) Clock speed
• B) Hyperthreading
• C) Fan speed
• D) Number of cores
Answer: A
Single-threaded tasks benefit most from high clock speed (GHz). More cores don't help if
software only uses one thread.
10. A technician is replacing a phone system that uses older technology. The handsets are
wired with CAT3 cabling to a central closet. Which connection type is being used?
• A) Analog PBX
• B) Digital PBX
• C) VoIP PBX
Correct Answers (Verified Answers) Plus Rationale 2026
Q&A | Instant Download Pdf
1. A technician needs to run a diagnostic DVD on a laptop running Windows 8.1. After
setting the boot order in the UEFI BIOS to the internal DVD-RW drive, the laptop still boots
into Windows. Which setting needs to be adjusted?
• A) TPM
• B) Virtualization
• C) Secure Boot
• D) UEFI BIOS password
Answer: C
Secure Boot prevents unauthorized boot devices from loading. Disabling Secure Boot or
enabling legacy/CSM boot allows booting from DVD.
2. A technician connects a second monitor to a desktop. It is physically located to the right
of the existing monitor, but the mouse pointer moves to the second monitor by moving to
the left edge of the screen. Which display setting needs to be adjusted?
• A) Scaling
• B) Rotation
• C) Position
• D) Resolution
, Answer: C
The display position/orientation setting in display properties allows dragging monitor icons to
match physical placement.
3. Which cable types are MOST likely used to connect an external hard drive? (Select TWO).
• A) Molex
• B) SPDIF
• C) eSATA
• D) HDMI
• E) USB 3.0
• F) CAT6e
Answer: C, E
eSATA and USB 3.0 are common external drive interfaces. eSATA provides SATA speeds
externally; USB 3.0 offers broad compatibility.
4. Which features should be considered when selecting a power supply for a high-end
gaming PC? (Select THREE).
• A) Mini-ITX form factor
• B) High number of connectors
• C) 24-pin main connector
• D) 20-pin main connector
• E) 350-450 watts of power
• F) Dual 12v rails
Answer: B, C, F
*High-end gaming PCs need robust power delivery: multiple connectors for components,
24-pin main connector (modern motherboards), and dual 12V rails for stable power*.
5. What is required during the installation of a digitizer?
,• A) Must be connected to the Internet
• B) Must be cleaned
• C) Must have the latest software installed
• D) Must be calibrated
Answer: D
Digitizers (touchscreens/stylus input) require calibration after installation to map input
coordinates to the display correctly.
6. A technician is troubleshooting an expansion card that receives faxes over a VoIP line.
The line connected to the expansion card is MOST likely which cable type?
• A) Coaxial
• B) CAT3
• C) CAT5
• D) Multi-mode fiber
• E) Single-mode fiber
Answer: C
*VoIP lines use standard Ethernet (CAT5/CAT5e/CAT6). Fax over VoIP is transmitted over the
IP network using CAT5 cabling*.
7. For which printer type should a technician obtain a maintenance kit containing a fuser,
transfer roller, and pickup rollers?
• A) Thermal
• B) Impact
• C) Inkjet
• D) Laser
, Answer: D
Laser printers use fuser assemblies, transfer rollers, and pickup rollers as
consumable/maintenance items. These are not found in other printer types.
8. Which cable connection type is an example of a mini DIN?
• A) BNC
• B) PS/2
• C) RCA
• D) DB9
Answer: B
*PS/2 connectors (keyboard/mouse) are 6-pin mini-DIN connectors. BNC is coaxial, RCA is
phono, DB9 is D-sub serial*.
9. For a single-threaded task, which CPU characteristic is MOST important?
• A) Clock speed
• B) Hyperthreading
• C) Fan speed
• D) Number of cores
Answer: A
Single-threaded tasks benefit most from high clock speed (GHz). More cores don't help if
software only uses one thread.
10. A technician is replacing a phone system that uses older technology. The handsets are
wired with CAT3 cabling to a central closet. Which connection type is being used?
• A) Analog PBX
• B) Digital PBX
• C) VoIP PBX
