LATEST COMPTIA A+ (CORE 1 AND CORE
2) EXAM BANK | COMPLETE EXAM BANK
WITH CORRECT ANSWERS AND
RATIONALES. A+ GRADED
1. Which of the following connector types is used for
analog video and is typically blue with 15 pins?
A) HDMI
B) DisplayPort
C) VGA (DE-15)
D) DVI-D
Correct answer: C
Rationale: VGA (Video Graphics Array) is an analog
15-pin DE-15 connector, often blue. DVI-D is digital;
HDMI and DisplayPort are digital audio/video.
2. A user reports that their computer turns off
unexpectedly after a few minutes of use. The most
likely cause is:
A) The power supply is unplugged
B) The CPU overheating due to a failed heatsink fan
C) The hard drive is full
,D) The network cable is disconnected
Correct answer: B
Rationale: Overheating (CPU or GPU) causes thermal
shutdown. The heatsink fan may have failed or dust
accumulation is preventing cooling.
3. Which DDR memory type has 288 pins and
operates at a voltage of 1.2V?
A) DDR2
B) DDR3
C) DDR4
D) DDR5
Correct answer: C
Rationale: DDR4 uses 288 pins (240 for DDR3, 240 for
DDR2) and operates at 1.2V. DDR5 also has 288 pins
but higher voltage? DDR5 is 1.1V.
4. A technician needs to boot a computer from a USB
flash drive to run a diagnostic tool. Which key is most
commonly pressed during POST to access the boot
menu?
A) F1
B) Del
,C) F12
D) Esc
Correct answer: C
Rationale: F12 is common for boot menu (select boot
device). F2 or Del enters BIOS/UEFI setup. Esc or F1
may be used on some systems.
5. Which RAID level provides mirroring (redundancy)
without striping or parity?
A) RAID 0
B) RAID 1
C) RAID 5
D) RAID 10
Correct answer: B
Rationale: RAID 1 mirrors data across two drives
(redundancy, no striping). RAID 0 stripes (no
redundancy). RAID 5 uses parity. RAID 10 is striped
mirrors.
6. A laser printer produces pages with vertical white
streaks. The most likely cause is:
A) Empty toner cartridge
, B) Low toner or a dirty laser scan mirror (or toner
distribution issue)
C) A damaged fuser roller
D) The pickup roller is worn
Correct answer: B
Rationale: Vertical white streaks usually indicate low
toner or a dirty laser scanning assembly (blocked
beam). Pickup rollers cause paper feed issues.
7. What is the maximum data transfer rate of USB 3.2
Gen 1?
A) 480 Mbps
B) 5 Gbps
C) 10 Gbps
D) 20 Gbps
Correct answer: B
Rationale: USB 3.2 Gen 1 (formerly USB 3.0) is 5
Gbps. USB 3.2 Gen 2 is 10 Gbps. USB 2.0 is 480
Mbps.
8. Which of the following wireless standards operates
only in the 5 GHz band and supports up to 1300 Mbps
theoretical throughput?
2) EXAM BANK | COMPLETE EXAM BANK
WITH CORRECT ANSWERS AND
RATIONALES. A+ GRADED
1. Which of the following connector types is used for
analog video and is typically blue with 15 pins?
A) HDMI
B) DisplayPort
C) VGA (DE-15)
D) DVI-D
Correct answer: C
Rationale: VGA (Video Graphics Array) is an analog
15-pin DE-15 connector, often blue. DVI-D is digital;
HDMI and DisplayPort are digital audio/video.
2. A user reports that their computer turns off
unexpectedly after a few minutes of use. The most
likely cause is:
A) The power supply is unplugged
B) The CPU overheating due to a failed heatsink fan
C) The hard drive is full
,D) The network cable is disconnected
Correct answer: B
Rationale: Overheating (CPU or GPU) causes thermal
shutdown. The heatsink fan may have failed or dust
accumulation is preventing cooling.
3. Which DDR memory type has 288 pins and
operates at a voltage of 1.2V?
A) DDR2
B) DDR3
C) DDR4
D) DDR5
Correct answer: C
Rationale: DDR4 uses 288 pins (240 for DDR3, 240 for
DDR2) and operates at 1.2V. DDR5 also has 288 pins
but higher voltage? DDR5 is 1.1V.
4. A technician needs to boot a computer from a USB
flash drive to run a diagnostic tool. Which key is most
commonly pressed during POST to access the boot
menu?
A) F1
B) Del
,C) F12
D) Esc
Correct answer: C
Rationale: F12 is common for boot menu (select boot
device). F2 or Del enters BIOS/UEFI setup. Esc or F1
may be used on some systems.
5. Which RAID level provides mirroring (redundancy)
without striping or parity?
A) RAID 0
B) RAID 1
C) RAID 5
D) RAID 10
Correct answer: B
Rationale: RAID 1 mirrors data across two drives
(redundancy, no striping). RAID 0 stripes (no
redundancy). RAID 5 uses parity. RAID 10 is striped
mirrors.
6. A laser printer produces pages with vertical white
streaks. The most likely cause is:
A) Empty toner cartridge
, B) Low toner or a dirty laser scan mirror (or toner
distribution issue)
C) A damaged fuser roller
D) The pickup roller is worn
Correct answer: B
Rationale: Vertical white streaks usually indicate low
toner or a dirty laser scanning assembly (blocked
beam). Pickup rollers cause paper feed issues.
7. What is the maximum data transfer rate of USB 3.2
Gen 1?
A) 480 Mbps
B) 5 Gbps
C) 10 Gbps
D) 20 Gbps
Correct answer: B
Rationale: USB 3.2 Gen 1 (formerly USB 3.0) is 5
Gbps. USB 3.2 Gen 2 is 10 Gbps. USB 2.0 is 480
Mbps.
8. Which of the following wireless standards operates
only in the 5 GHz band and supports up to 1300 Mbps
theoretical throughput?
