Basic Concepts - Practice MCQs for CCAT

Correct Answer: B - CPU

The CPU (Central Processing Unit) is called the brain of the computer as it performs all the processing and calculations.

Correct Answer: B - Random Access Memory

RAM stands for Random Access Memory. It is the computer's short-term memory used to store data that is actively being used.

Correct Answer: A - Keyboard

Keyboard is an input device used to enter data into the computer. Monitor, printer, and speaker are output devices.

Correct Answer: A - Read Only Memory

ROM stands for Read Only Memory. It is non-volatile memory that retains data even when power is off.

Correct Answer: C - RAM

RAM is volatile memory - it loses its contents when power is turned off.

Correct Answer: B - 1024 Bytes

1 Kilobyte (KB) = 1024 Bytes = 2¹⁰ Bytes.

Correct Answer: C - Oracle

Oracle is a database management system, not an operating system.

Correct Answer: B - Booting

Booting is the process of starting up a computer and loading the operating system.

Correct Answer: D - Hard Drive

Hard Drive is a secondary storage device used for permanent data storage and backup.

Correct Answer: D - Basic Input Output System

BIOS stands for Basic Input Output System. It initializes hardware during booting.

Correct Answer: C - First

First generation computers (1940-1956) used vacuum tubes for circuitry.

Correct Answer: B - Second

Second generation computers (1956-1963) used transistors instead of vacuum tubes.

Correct Answer: C - Third

Third generation computers (1964-1971) used Integrated Circuits.

Correct Answer: C - Cache

Cache memory is the fastest memory, located closest to the CPU.

Correct Answer: B - Universal Serial Bus

USB stands for Universal Serial Bus, a standard for connecting peripherals.

Correct Answer: D - ALU

The Arithmetic Logic Unit (ALU) performs all arithmetic and logical operations inside the CPU.

Correct Answer: D - Random Access Memory

RAM stands for Random Access Memory, which allows data to be read and written in any order.

Correct Answer: D - ROM

ROM (Read Only Memory) retains data even when the power is turned off, making it non-volatile.

Correct Answer: D - Vacuum Tubes

First generation computers (1940s-1950s) used vacuum tubes as the main electronic component.

Correct Answer: C - Plotter

A plotter is an output device used to print vector graphics and large drawings.

Correct Answer: A - Directs the flow of data and instructions

The Control Unit directs the operations of the processor by coordinating data flow and instruction execution.

Correct Answer: B - Registers

Registers are the fastest memory, located directly inside the CPU for immediate access.

Correct Answer: B - United States

ENIAC (Electronic Numerical Integrator and Computer) was developed in the United States in 1945.

Correct Answer: B - Touchscreen

A touchscreen serves as both input (touch/gesture detection) and output (display) device.

Correct Answer: C - Basic Input Output System

BIOS stands for Basic Input Output System, which initializes hardware during the boot process.

Correct Answer: A - Third Generation

Third generation computers (1964-1971) introduced Integrated Circuits, making computers smaller and more reliable.

Correct Answer: D - Connect and allow communication between components

The motherboard is the main circuit board that connects all computer components and allows them to communicate.

Correct Answer: D - Hard Disk Drive

A Hard Disk Drive is a secondary storage device used for long-term, non-volatile data storage.

Correct Answer: A - Bit

A bit (binary digit) is the smallest unit of data, representing a 0 or 1.

Correct Answer: A - 8

One byte consists of 8 bits, which can represent values from 0 to 255.

Correct Answer: B - CD-ROM

CD-ROM uses laser technology to read data from the disc surface.

Correct Answer: D - Transistors

Second generation computers (1956-1963) used transistors, which were smaller and more efficient than vacuum tubes.

Correct Answer: D - Graphics Processing Unit

GPU stands for Graphics Processing Unit, specialized for rendering images and graphics.

Correct Answer: A - Mask ROM

Mask ROM is programmed during the manufacturing process and cannot be modified afterward.

Correct Answer: D - 4.7 GB

A standard single-layer DVD can hold approximately 4.7 GB of data.

Correct Answer: A - Data Bus

The Data Bus transfers actual data between the CPU, memory, and other components.

Correct Answer: D - 4 bits

A nibble consists of 4 bits, which is half a byte.

Correct Answer: C - Modem

A modem (modulator-demodulator) converts digital signals to analog and vice versa for telephone line communication.

Correct Answer: B - DRAM

DRAM (Dynamic RAM) is volatile memory that loses its contents when power is removed.

Correct Answer: A - Universal Serial Bus

USB stands for Universal Serial Bus, a standard for connecting peripherals to a computer.

Correct Answer: C - Microprocessors

Fourth generation computers (1971-present) use microprocessors (VLSI technology) on a single chip.

Correct Answer: B - Blu-ray Disc

Blu-ray Disc is an optical storage medium that uses blue-violet laser to read and write data.

Correct Answer: B - Switched Mode Power Supply

SMPS stands for Switched Mode Power Supply, which converts AC power to DC for computer components.

Correct Answer: A - Cathode Ray

Cathode Ray is a display technology (CRT monitors), not a type of printer.

Correct Answer: A - Specifying memory locations

The address bus carries memory addresses from the CPU to identify specific memory locations.

Correct Answer: C - DRAM

DRAM stores data in capacitors that leak charge, requiring periodic refresh cycles to retain information.

Correct Answer: C - Pencil marks on paper

OMR (Optical Mark Recognition) reads pencil or pen marks on pre-defined positions on paper forms.

Correct Answer: A - 64 bits

A 64-bit processor has a word size of 64 bits, meaning it can process 64 bits of data in a single operation.

Correct Answer: A - Software permanently stored in ROM

Firmware is software programmed into ROM or flash memory that provides low-level control of hardware.

Correct Answer: C - 25 GB

A single-layer Blu-ray disc can store up to 25 GB of data.