CompTIA A Certification Exam Practice

CompTIA A+ Certification Exam Practice Test Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which of the following is a common connector type used for hard

drives?

A. USB-C

B. SATA

C. HDMI

D. RJ-45

Rationale: SATA (Serial ATA) is the standard interface for connecting

most modern hard drives and SSDs to the motherboard.

• Which type of memory is volatile and loses data when power is

removed?

A. ROM

• Flash 1 / 4

C. RAM

D. SSD

Rationale: RAM (Random Access Memory) is volatile memory used by

the system for active processes and data.

• What is the primary purpose of the BIOS?
• Store user files
• Initialize hardware during boot
• Manage network traffic
• Provide cloud backup

Rationale: BIOS (Basic Input/Output System) performs POST and

initializes hardware before the operating system loads.

• Which device translates digital signals into analog signals for

transmission over phone lines?

• Switch
• Hub
• Modem
• Router

Rationale: A modem modulates digital data into analog signals and

demodulates incoming analog signals into digital data.

• Which of the following is a common feature of a laser printer?
• Uses liquid ink
• Uses toner powder
• Prints only in color 2 / 4

• Uses impact printing

Rationale: Laser printers use toner, a fine powder, which is fused onto

paper with heat and pressure.

• Which type of expansion slot provides the fastest data transfer rate

for modern graphics cards?

A. PCI

B. AGP

C. PCI-X

• PCIe x16

Rationale: PCIe x16 slots are designed for high-speed graphics card

data transfer, much faster than older slot types.

• Which of the following is the primary function of an SSD?
• Backup data only
• Store data and programs
• Provide volatile memory
• Increase CPU speed

Rationale: SSD (Solid State Drive) stores operating system,

applications, and user data using flash memory for faster access than HDDs.

• Which tool is used to test the integrity of RAM?
• Disk Cleanup
• MemTest86
• MemTest86 3 / 4

D. CHKDSK

Rationale: MemTest86 is a diagnostic tool that checks RAM modules

for errors and stability.

• Which network device connects multiple networks and routes traffic

between them?

• Hub
• Router
• Switch
• Access point

Rationale: Routers direct network traffic between different networks

and manage IP address routing.

• Which Windows utility allows users to manage startup

programs?

• Device Manager
• Disk Management
• Task Manager
• Event Viewer

Rationale: Task Manager provides information about running

programs and allows users to manage startup applications.

• Which CPU socket type is commonly used in Intel desktop

systems released after 2016?

A. LGA 1151

• LGA 775
• / 4