COMPTIA A+ CORE 1 (220-1101) CERTIFICATION
PRACTICE EXAM
Actual Questions and Answers
Expert-Verified Explanation
This Exam contains:
✪ Multiple-choice and True/False Format
✪ Expert-Verified Explanations
✪ Verified with Trusted Textbooks
1. While making an online bank transaction, a customer sees a lock icon indicating encryption. What
TCP/IP port is used for this encrypted communication?
A. 25
B. 80
C. 143
D. 443
Answer: D
EXPLANATION: Port 443 is used for HTTPS, which encrypts communication between browser and server.
2. A laptop LCD screen flickers and dims. Brightness settings are correct. What's the MOST likely issue?
A. External display port is active
B. LCD screen inverter is failing
C. Video cable is loose
D. LCD screen is failing
Answer: B
EXPLANATION: A failing inverter is a common cause of dim or flickering screens on LCDs.
3. Which sound card port connects a non-amplified microphone?
A. Line in
B. Line out
C. Speaker out
D. Mic in
Answer: D
EXPLANATION: The Mic in port is designed for direct microphone input.
4. Images on a new LED monitor appear overly large. What should you do?
A. Use VGA instead
B. Change to 1280x720
C. Set to native resolution
D. Reduce color depth
Answer: C
EXPLANATION: Native resolution matches the monitor’s pixel display for optimal clarity.
, 5. A laser printer prints a vertical black line on every page even after replacing toner. What’s the likely
cause?
A. Poor quality paper
B. Worn drum
C. Damaged fuser
D. Dirty corona wire
Answer: D
EXPLANATION: A dirty corona wire can cause lines on each printout.
6. A PC won’t turn on. What steps should be done first? (Select two.)
A. Test PSU with multimeter
B. Check surge protector
C. Check wall outlet connection
D. Replace power supply
E. Plug in keyboard
Answer: B, C
EXPLANATION: Always check power source and connections before internal diagnostics.
7. How can you sync a Windows 11 PC to an iPad? (Select two.)
A. Serial cable
B. Wi-Fi
C. Ethernet
D. USB
E. FireWire
Answer: B, D
EXPLANATION: Wi-Fi and USB are standard methods for syncing iOS devices to PCs.
8. A laptop shuts off before 5% battery. What’s the likely cause?
A. BIOS settings
B. Power meter misreport
C. Failing battery
D. OS power settings
Answer: B
EXPLANATION: An inaccurate battery meter causes shutdowns before expected.
9. A user’s print job produces random characters. Others print fine. Why?
A. Incorrect printer driver
B. Network error
C. Insufficient permissions
D. Faulty cable
Answer: A
EXPLANATION: Wrong drivers send incorrect print commands, resulting in garbled output.
PRACTICE EXAM
Actual Questions and Answers
Expert-Verified Explanation
This Exam contains:
✪ Multiple-choice and True/False Format
✪ Expert-Verified Explanations
✪ Verified with Trusted Textbooks
1. While making an online bank transaction, a customer sees a lock icon indicating encryption. What
TCP/IP port is used for this encrypted communication?
A. 25
B. 80
C. 143
D. 443
Answer: D
EXPLANATION: Port 443 is used for HTTPS, which encrypts communication between browser and server.
2. A laptop LCD screen flickers and dims. Brightness settings are correct. What's the MOST likely issue?
A. External display port is active
B. LCD screen inverter is failing
C. Video cable is loose
D. LCD screen is failing
Answer: B
EXPLANATION: A failing inverter is a common cause of dim or flickering screens on LCDs.
3. Which sound card port connects a non-amplified microphone?
A. Line in
B. Line out
C. Speaker out
D. Mic in
Answer: D
EXPLANATION: The Mic in port is designed for direct microphone input.
4. Images on a new LED monitor appear overly large. What should you do?
A. Use VGA instead
B. Change to 1280x720
C. Set to native resolution
D. Reduce color depth
Answer: C
EXPLANATION: Native resolution matches the monitor’s pixel display for optimal clarity.
, 5. A laser printer prints a vertical black line on every page even after replacing toner. What’s the likely
cause?
A. Poor quality paper
B. Worn drum
C. Damaged fuser
D. Dirty corona wire
Answer: D
EXPLANATION: A dirty corona wire can cause lines on each printout.
6. A PC won’t turn on. What steps should be done first? (Select two.)
A. Test PSU with multimeter
B. Check surge protector
C. Check wall outlet connection
D. Replace power supply
E. Plug in keyboard
Answer: B, C
EXPLANATION: Always check power source and connections before internal diagnostics.
7. How can you sync a Windows 11 PC to an iPad? (Select two.)
A. Serial cable
B. Wi-Fi
C. Ethernet
D. USB
E. FireWire
Answer: B, D
EXPLANATION: Wi-Fi and USB are standard methods for syncing iOS devices to PCs.
8. A laptop shuts off before 5% battery. What’s the likely cause?
A. BIOS settings
B. Power meter misreport
C. Failing battery
D. OS power settings
Answer: B
EXPLANATION: An inaccurate battery meter causes shutdowns before expected.
9. A user’s print job produces random characters. Others print fine. Why?
A. Incorrect printer driver
B. Network error
C. Insufficient permissions
D. Faulty cable
Answer: A
EXPLANATION: Wrong drivers send incorrect print commands, resulting in garbled output.
