CompTIA A+ Core 1 & Core 2
Complete Revision Guide
2026/2027 – Verified Q&As
with Detailed Rationales (Test
Bank Bundle - 73 Questions)
---
**QUESTION 1:**
Which component stores the BIOS/UEFI firmware?
A) Hard drive
B) RAM
C) CMOS chip
D) CPU
> 🎯 **CORRECT ANSWER:** C) CMOS chip
> 💡 **CLINICAL RATIONALE:** CMOS retains BIOS/UEFI settings.
---
**QUESTION 2:**
Which type of RAM is commonly used in modern desktops?
A) SDRAM
B) DDR4
C) RDRAM
D) SRAM
,> 🎯 **CORRECT ANSWER:** B) DDR4
> 💡 **CLINICAL RATIONALE:** DDR4 is standard desktop memory.
---
**QUESTION 3:**
What is the primary function of a power supply unit (PSU)?
A) Store data
B) Convert AC to DC power
C) Process instructions
D) Control input/output
> 🎯 **CORRECT ANSWER:** B) Convert AC to DC power
> 💡 **CLINICAL RATIONALE:** PSU converts AC to regulated DC.
---
**QUESTION 4:**
Which connector is used for modern hard drives and SSDs?
A) IDE
B) SATA
C) SCSI
D) M.2
> 🎯 **CORRECT ANSWER:** B) SATA
> 💡 **CLINICAL RATIONALE:** SATA is standard for storage devices.
---
**QUESTION 5:**
What does the acronym POST stand for?
A) Power-On Self-Test
B) Pre-Operating System Test
, C) Post-Operating System Test
D) Primary Operation System Test
> 🎯 **CORRECT ANSWER:** A) Power-On Self-Test
> 💡 **CLINICAL RATIONALE:** POST checks hardware during boot.
---
**QUESTION 6:**
Which of the following is a type of external storage device?
A) SSD
B) HDD
C) USB flash drive
D) RAM
> 🎯 **CORRECT ANSWER:** C) USB flash drive
> 💡 **CLINICAL RATIONALE:** USB drive is portable external storage.
---
**QUESTION 7:**
Which OS allows multiple users to run programs simultaneously?
A) Windows 10
B) Linux
C) macOS
D) All of the above
> 🎯 **CORRECT ANSWER:** D) All of the above
> 💡 **CLINICAL RATIONALE:** All are multi-user operating systems.
---
**QUESTION 8:**
Which command is used to view IP configuration in Windows?
Complete Revision Guide
2026/2027 – Verified Q&As
with Detailed Rationales (Test
Bank Bundle - 73 Questions)
---
**QUESTION 1:**
Which component stores the BIOS/UEFI firmware?
A) Hard drive
B) RAM
C) CMOS chip
D) CPU
> 🎯 **CORRECT ANSWER:** C) CMOS chip
> 💡 **CLINICAL RATIONALE:** CMOS retains BIOS/UEFI settings.
---
**QUESTION 2:**
Which type of RAM is commonly used in modern desktops?
A) SDRAM
B) DDR4
C) RDRAM
D) SRAM
,> 🎯 **CORRECT ANSWER:** B) DDR4
> 💡 **CLINICAL RATIONALE:** DDR4 is standard desktop memory.
---
**QUESTION 3:**
What is the primary function of a power supply unit (PSU)?
A) Store data
B) Convert AC to DC power
C) Process instructions
D) Control input/output
> 🎯 **CORRECT ANSWER:** B) Convert AC to DC power
> 💡 **CLINICAL RATIONALE:** PSU converts AC to regulated DC.
---
**QUESTION 4:**
Which connector is used for modern hard drives and SSDs?
A) IDE
B) SATA
C) SCSI
D) M.2
> 🎯 **CORRECT ANSWER:** B) SATA
> 💡 **CLINICAL RATIONALE:** SATA is standard for storage devices.
---
**QUESTION 5:**
What does the acronym POST stand for?
A) Power-On Self-Test
B) Pre-Operating System Test
, C) Post-Operating System Test
D) Primary Operation System Test
> 🎯 **CORRECT ANSWER:** A) Power-On Self-Test
> 💡 **CLINICAL RATIONALE:** POST checks hardware during boot.
---
**QUESTION 6:**
Which of the following is a type of external storage device?
A) SSD
B) HDD
C) USB flash drive
D) RAM
> 🎯 **CORRECT ANSWER:** C) USB flash drive
> 💡 **CLINICAL RATIONALE:** USB drive is portable external storage.
---
**QUESTION 7:**
Which OS allows multiple users to run programs simultaneously?
A) Windows 10
B) Linux
C) macOS
D) All of the above
> 🎯 **CORRECT ANSWER:** D) All of the above
> 💡 **CLINICAL RATIONALE:** All are multi-user operating systems.
---
**QUESTION 8:**
Which command is used to view IP configuration in Windows?
