NAVEDTRA Exam Questions with correct
Answers With Revised Rationales And Multiple
Choices | 2025 -2026 | GRADED A+ | 100 % PASS
| BRANDNEW !!!
What is the primary function of an operating system (OS)?
A. Performs calculations for software only
B. Manages computer operations including identifying, accessing, and processing
information
C. Serves as the physical framework of a computer
D. Protects the computer from viruses
Answer: B
Rationale: The OS is software that manages computer resources and operations. It controls
hardware, executes programs, and handles input/output processes. Choices A, C, and D
describe specific functions of hardware or antivirus programs, not the OS.
What defines a computer?
A. A machine that stores data permanently
B. An electronic machine that performs calculations based on instructions
C. Any electronic device with a screen
D. A machine that only connects to the internet
Answer: B
Rationale: A computer is an electronic device capable of processing instructions to perform
calculations. Data storage or internet connectivity alone does not define a computer.
Which components make up a computer system?
A. Only hardware
B. Only software
C. Hardware and software
D. Peripherals only
Answer: C
Rationale: A computer system consists of both physical components (hardware) and the
programs/instructions (software) that operate it. Peripherals are part of hardware but not
the entire system.
, Which of the following best describes hardware?
A. Programs that give instructions to the computer
B. The physical components of a computer, such as the case, keyboard, and monitor
C. Firmware that controls startup
D. A type of memory used by the CPU
Answer: B
Rationale: Hardware refers to the tangible parts of a computer. Programs, firmware, and
memory are software or components that interact with hardware but are not hardware
themselves.
What is the main purpose of a computer case?
A. Store data temporarily
B. House internal components, keep them cool, and protect against static electricity
C. Run software programs
D. Improve network speed
Answer: B
Rationale: The case provides physical protection and support, organizes components, and
helps maintain safe operating temperatures. Data storage and running programs are
functions of memory and the CPU.
Which current is required for all components inside a computer?
A. Alternating Current (AC)
B. Direct Current (DC)
C. Static Current
D. High Voltage AC
Answer: B
Rationale: Internal computer components require DC power. AC is supplied from the wall
but converted to DC by the power supply.
What is the motherboard?
A. A type of software
B. A peripheral device
C. The main circuit board of a computer connecting all components
D. A storage device
Answers With Revised Rationales And Multiple
Choices | 2025 -2026 | GRADED A+ | 100 % PASS
| BRANDNEW !!!
What is the primary function of an operating system (OS)?
A. Performs calculations for software only
B. Manages computer operations including identifying, accessing, and processing
information
C. Serves as the physical framework of a computer
D. Protects the computer from viruses
Answer: B
Rationale: The OS is software that manages computer resources and operations. It controls
hardware, executes programs, and handles input/output processes. Choices A, C, and D
describe specific functions of hardware or antivirus programs, not the OS.
What defines a computer?
A. A machine that stores data permanently
B. An electronic machine that performs calculations based on instructions
C. Any electronic device with a screen
D. A machine that only connects to the internet
Answer: B
Rationale: A computer is an electronic device capable of processing instructions to perform
calculations. Data storage or internet connectivity alone does not define a computer.
Which components make up a computer system?
A. Only hardware
B. Only software
C. Hardware and software
D. Peripherals only
Answer: C
Rationale: A computer system consists of both physical components (hardware) and the
programs/instructions (software) that operate it. Peripherals are part of hardware but not
the entire system.
, Which of the following best describes hardware?
A. Programs that give instructions to the computer
B. The physical components of a computer, such as the case, keyboard, and monitor
C. Firmware that controls startup
D. A type of memory used by the CPU
Answer: B
Rationale: Hardware refers to the tangible parts of a computer. Programs, firmware, and
memory are software or components that interact with hardware but are not hardware
themselves.
What is the main purpose of a computer case?
A. Store data temporarily
B. House internal components, keep them cool, and protect against static electricity
C. Run software programs
D. Improve network speed
Answer: B
Rationale: The case provides physical protection and support, organizes components, and
helps maintain safe operating temperatures. Data storage and running programs are
functions of memory and the CPU.
Which current is required for all components inside a computer?
A. Alternating Current (AC)
B. Direct Current (DC)
C. Static Current
D. High Voltage AC
Answer: B
Rationale: Internal computer components require DC power. AC is supplied from the wall
but converted to DC by the power supply.
What is the motherboard?
A. A type of software
B. A peripheral device
C. The main circuit board of a computer connecting all components
D. A storage device
