A computer accepts data, processes it and produces what?
A Mechanical torque
B Raw fuel
C Information output
D Hydraulic pressure
Answer: C. Information output. A computer processes input data into useful information.
Computer hardware refers to what?
A Physical components
B Programs and instructions
C User passwords
D Data formats only
Answer: A. Physical components. Hardware includes tangible components such as the processor, memory and peripherals.
Software is a set of what?
A Physical circuits
B Input devices
C Power cables
D Programs and instructions
Answer: D. Programs and instructions. Software tells computer hardware what operations to perform.
The CPU is often called the computer’s what?
A Central processing unit
B Primary storage
C Input controller
D Network cable
Answer: A. Central processing unit. The CPU executes instructions and coordinates processing.
The arithmetic logic unit performs arithmetic and what?
A Logical operations
B File storage
C Network routing
D Power conversion
Answer: A. Logical operations. The ALU handles arithmetic calculations and logical comparisons.
The control unit coordinates what inside the processor?
A Monitor brightness
B Printer ink
C Disk rotation only
D Instruction execution
Answer: D. Instruction execution. The control unit directs instruction sequencing and data movement.
A CPU register is a small, fast what?
A Storage location
B External disk
C Network protocol
D Power supply
Answer: A. Storage location. Registers hold immediate data and control values used by the CPU.
RAM is generally what kind of memory?
A Nonvolatile memory
B Optical memory
C Volatile memory
D Magnetic tape
Answer: C. Volatile memory. RAM loses stored contents when power is removed.
ROM is generally what kind of memory?
A Volatile memory
B Cache only
C Nonvolatile memory
D Temporary register
Answer: C. Nonvolatile memory. ROM retains stored contents without power.
Cache memory is placed close to what processor component?
A Printer
B Keyboard
C CPU core
D Power supply
Answer: C. CPU core. Cache provides fast access to frequently used data near the processor.
Secondary storage retains data when what is removed?
A Power
B The monitor
C The keyboard
D The network cable
Answer: A. Power. Persistent storage such as SSDs retains data without power.
A keyboard is which type of device?
A Output device
B Storage device
C Processing unit
D Input device
Answer: D. Input device. A keyboard sends text and commands into a computer.
A monitor is which type of device?
A Input device
B Output device
C Storage device
D Control unit
Answer: B. Output device. A monitor presents visual information from the computer.
The motherboard connects processor, memory and what?
A Only display pixels
B Only files
C Only software licenses
D Peripheral components
Answer: D. Peripheral components. The motherboard provides connections and buses among major components.
A computer bus carries data, addresses or what?
A Cooling fluid
B Mechanical torque
C Control signals
D Sound waves only
Answer: C. Control signals. Buses communicate data, addresses and control information between components.
CPU clock frequency measures cycles per what?
A Second
B Instruction only
C Byte
D File
Answer: A. Second. Clock frequency is measured in hertz, or cycles per second.
A bit can represent how many binary values?
A Four values
B Two values
C Eight values
D Ten values
Answer: B. Two values. A bit is a binary digit with value 0 or 1.
One byte contains how many bits?
A Four bits
B Eight bits
C Six bits
D Sixteen bits
Answer: B. Eight bits. A byte is commonly defined as eight bits.
The binary number system uses which digits?
A Zero to seven
B Zero and one
C Zero to nine
D One to sixteen
Answer: B. Zero and one. Binary is base two and uses digits 0 and 1.
Hexadecimal is a base what number system?
A Two
B Eight
C Sixteen
D Ten
Answer: C. Sixteen. Hexadecimal uses sixteen symbols, 0–9 and A–F.
ASCII encodes characters using what?
A Sound waves
B Numeric codes
C Image pixels only
D CPU voltages
Answer: B. Numeric codes. ASCII assigns numeric code values to characters.
Unicode supports characters from what range?
A English letters only
B Digits only
C Punctuation only
D Many writing systems
Answer: D. Many writing systems. Unicode provides code points for characters across many languages and symbol sets.
Firmware is software stored close to what hardware?
A Cloud accounts only
B Device hardware
C Printed manuals
D Network cables
Answer: B. Device hardware. Firmware provides low-level control for a device or computer component.
A boot process starts the computer and loads what?
A Application document only
B Printer queue
C Network packet only
D Operating system
Answer: D. Operating system. Booting initializes hardware and loads the operating system.
A device driver allows the operating system to control what?
A Hardware device
B User documents
C Network policy only
D Power outlet
Answer: A. Hardware device. Drivers provide software interfaces to hardware devices.