Basic Structure of Computer System MCQs (Part 1 of 5)
* Which of the following is considered the "brain" of the computer?
a) Memory Unit
b) Control Unit
c) Arithmetic Logic Unit (ALU)
d) Input Unit
Answer: b) Control Unit
* The primary function of the input unit is to:
a) Display processed data.
b) Store data and instructions.
c) Accept data and instructions from the outside world.
d) Perform arithmetic and logical operations.
Answer: c) Accept data and instructions from the outside world.
* The output unit is responsible for:
a) Providing processed information to the user.
b) Controlling the sequence of operations.
c) Storing intermediate results.
d) Fetching instructions from memory.
Answer: a) Providing processed information to the user.
* Which of the following is NOT a basic operation of a computer?
a) Inputting data
b) Processing data
c) Storing data
d) Walking the dog
Answer: d) Walking the dog
* The part of the CPU that performs arithmetic and logical operations is the:
a) Control Unit (CU)
b) Memory Address Register (MAR)
c) Arithmetic Logic Unit (ALU)
d) Program Counter (PC)
Answer: c) Arithmetic Logic Unit (ALU)
* The Control Unit (CU) is responsible for:
a) Executing arithmetic operations.
b) Storing data temporarily.
c) Decoding instructions and controlling the flow of data.
d) Displaying output.
Answer: c) Decoding instructions and controlling the flow of data.
* Primary memory is also known as:
a) Secondary storage
b) Auxiliary memory
c) Main memory
d) Cache memory
Answer: c) Main memory
* Which of the following is an example of secondary storage?
a) RAM
b) ROM
c) Hard Disk Drive (HDD)
d) Cache
Answer: c) Hard Disk Drive (HDD)
* The speed of the CPU is often measured in:
a) Bytes per second (Bps)
b) Revolutions per minute (RPM)
c) Hertz (Hz)
d) Dots per inch (DPI)
Answer: c) Hertz (Hz)
* What does CPU stand for?
a) Central Processing Output
b) Computer Processing Unit
c) Central Processing Unit
d) Control Program Unit
Answer: c) Central Processing Unit
* Which register holds the address of the next instruction to be executed?
a) Accumulator
b) Instruction Register
c) Program Counter
d) Memory Data Register
Answer: c) Program Counter
* The process of fetching an instruction from memory, decoding it, and then executing it is known as:
a) Booting process
b) Instruction cycle
c) Data processing
d) Memory management
Answer: b) Instruction cycle
* Which type of memory is volatile?
a) ROM
b) PROM
c) RAM
d) EPROM
Answer: c) RAM
* Which type of memory is non-volatile and contains the initial startup instructions?
a) RAM
b) Cache
c) ROM
d) Hard Disk
Answer: c) ROM
* What is the purpose of cache memory?
a) To permanently store user data.
b) To speed up memory access by storing frequently used data.
c) To act as the main memory of the computer.
d) To connect the CPU to peripheral devices.
Answer: b) To speed up memory access by storing frequently used data.
* Which level of cache memory is typically the fastest and smallest?
a) L1 cache
b) L2 cache
c) L3 cache
d) Main memory
Answer: a) L1 cache
* What is the role of the Memory Address Register (MAR)?
a) To store the data being transferred to or from memory.
b) To store the address of the memory location being accessed.
c) To store the instruction currently being executed.
d) To store the results of arithmetic and logical operations.
Answer: b) To store the address of the memory location being accessed.
* What is the role of the Memory Data Register (MDR)?
a) To store the address of the memory location being accessed.
b) To store the instruction currently being executed.
c) To store the data being transferred to or from memory.
d) To control the read/write operations of memory.
Answer: c) To store the data being transferred to or from memory.
* Which component connects the CPU, memory, and other peripherals?
a) ALU
b) Control Unit
c) System Bus
d) Power Supply
Answer: c) System Bus
* The system bus is typically divided into three separate buses:
a) Data bus, address bus, and power bus
b) Control bus, data bus, and signal bus
c) Address bus, data bus, and control bus
d) Internal bus, external bus, and system bus
Answer: c) Address bus, data bus, and control bus
* What does WAN stand for?
a) Wide Area Network
b) Wireless Access Node
c) Wired Area Network
d) Web Application Network
Answer: a) Wide Area Network
* What does HTTP stand for?
a) Hypertext Transfer Protocol
b) High-Text Transmission Program
c) Hyper Transfer Text Procedure
d) High Transmission Transfer Protocol
Answer: a) Hypertext Transfer Protocol
* What does FTP stand for?
a) File Transfer Protocol
b) Fast Transmission Procedure
c) File Transmission Program
d) Fragment Transfer Protocol
Answer: a) File Transfer Protocol
* What does GUI stand for?
a) General User Interface
b) Graphical User Interface
c) Global Utility Interface
d) Guided User Interaction
Answer: b) Graphical User Interface
* What does CLI (or CUI) stand for?
a) Common Language Interface
b) Command Line Interface (or Character User Interface)
c) Central Logic Interface
d) Computer Language Instruction
Answer: b) Command Line Interface (or Character User Interface)
* What does TCP/IP stand for?
a) Transmission Control Protocol/Internet Protocol
b) Transfer Control Program/Internet Protocol
c) Telecommunication Control Protocol/Internet Program
d) Transport Communication Protocol/Inter-network Process
Answer: a) Transmission Control Protocol/Internet Protocol
* What does DNS stand for?
a) Digital Network System
b) Domain Name System
c) Data Network Service
d) Distributed Naming Standard
Answer: b) Domain Name System
* What does VPN stand for?
a) Virtual Private Network
b) Very Personal Network
c) Video Processing Node
d) Volatile Protocol Network
Answer: a) Virtual Private Network
Final One-Liner Question/Answer MCQs
* Question: What is the primary function of the operating system?
a) To run user applications.
b) To manage computer hardware and software resources.
c) To provide internet connectivity.
d) To perform complex calculations.
Answer: b) To manage computer hardware and software resources.
* Question: What is a program?
a) A piece of computer hardware.
b) A sequence of instructions that tells a computer what to do.
c) A user interface element.
d) A type of output device.
Answer: b) A sequence of instructions that tells a computer what to do.
* Question: What is the role of the memory unit?
a) To perform arithmetic and logical operations.
b) To store data and instructions.
c) To control the flow of information.
d) To interact with the user.
Answer: b) To store data and instructions.
* Question: What is the difference between primary and secondary memory?
a) Primary memory is slower than secondary memory.
b) Primary memory is directly accessible by the CPU, while secondary memory is not.
c) Secondary memory is volatile, while primary memory is non-volatile.
d) Primary memory is used for permanent storage, while secondary memory is temporary.
Answer: b) Primary memory is directly accessible by the CPU, while secondary memory is not.
* Question: What is the function of the control bus?
a) To carry data between the CPU and memory.
b) To carry address information.
c) To transmit control signals between different components.
d) To provide power to the components.
Answer: c) To transmit control signals between different components.
* Question: What is the purpose of pipelining in a CPU?
a) To reduce the number of registers.
b) To overlap the execution of multiple instructions.
c) To simplify the instruction set.
d) To increase the clock speed.
Answer: b) To overlap the execution of multiple instructions.
* Question: What is the main advantage of SIMD architecture?
a) Efficient execution of sequential code.
b) Parallel processing of large datasets with a single instruction.
c) Handling complex control flow efficiently.
d) Reduced power consumption.
Answer: b) Parallel processing of large datasets with a single instruction.
* Question: What is the role of the input devices in a computer system?
a) To display processed information.
b) To accept data and instructions from the user.
c) To store data permanently.
d) To perform calculations.
Answer: b) To accept data and instructions from the user.
* Question: What is the function of the output devices in a computer system?
a) To accept data from the user.
b) To present processed information to the user.
c) To store data temporarily.
d) To control the CPU's operations.
Answer: b) To present processed information to the user.
* Question: In the context of computer architecture, what is an instruction set?
a) The physical layout of the CPU.
b) The complete set of instructions that a CPU can understand and execute.
c) The software used to program the computer.
d) The way data is organized in memory.
Answer: b) The complete set of instructions that a CPU can understand and execute.
