Computer Architecture
69 Questions
Computer Architecture MCQs — Practice & Prepare
✅ Correct answer: All of these
Microprocessors form the core processing component used to build a wide range of devices, including computers, digital systems, and calculators, since they provide the compact processing power these devices need.
✅ Correct answer: transistors
A microprocessor is built from millions (in modern chips, often billions) of transistors, tiny electronic switches etched onto silicon that together perform all the processor's calculations and logic operations.
✅ Correct answer: understands only machine language
A microprocessor directly understands only machine language (binary instructions specific to its architecture); higher-level languages must first be translated (compiled or interpreted) into machine code before the processor can execute them.
✅ Correct answer: Input
Input refers to information or data coming from an external source and fed into computer software for processing — the starting point of any computing task.
✅ Correct answer: control unit, arithmetic logic unit, memory unit
The CPU consists of three main components: the control unit (which directs operations), the arithmetic logic unit (which performs calculations), and the memory unit (which temporarily holds data and instructions).
✅ Correct answer: Load
The 'Load' instruction is used to bring (load) data from memory into the CPU's accumulator register, preparing it for processing by the arithmetic logic unit.
✅ Correct answer: microprocessor
The CPU comprises three core units: the control unit, the memory unit, and the arithmetic/logic unit (ALU) — together forming the complete processing core of a computer.
48
Which unit of computer helps in communication between the memory and the arithmetic logical unit?
✅ Correct answer: CPU
The CPU itself is what facilitates communication between memory and the arithmetic logic unit (ALU), coordinating the flow of data and instructions between these key internal components.
✅ Correct answer: a set of ALU
The internal memory within a CPU is essentially a set of registers — small, extremely fast storage locations used to hold data and instructions temporarily during processing.
✅ Correct answer: Register
A register is a small data-holding location within the computer's processor, used to temporarily hold an instruction, a memory address, or any other small piece of data during processing.
✅ Correct answer: main memory
The CPU retrieves its data and instructions from main memory (RAM), since this is the fast, directly accessible memory that holds actively used information during processing.
52
Which computer memory is used for storing programs and data currently being processed by the CPU?
✅ Correct answer: Internal memory
Internal memory (RAM) is used for storing programs and data that are currently being processed by the CPU, providing fast, temporary access needed for active computing tasks.
✅ Correct answer: main memory
The I/O processor has direct access to main memory and manages a number of independent data channels, allowing input/output operations to occur efficiently without constantly burdening the main CPU.
✅ Correct answer: internal memory
The word 'computer' usually refers to the central processing unit (CPU) plus its internal memory, since these two components together form the core processing and short-term data-handling system of the machine.
✅ Correct answer: Direct Memory Access
DMA stands for Direct Memory Access, a feature that allows certain hardware components to transfer data directly to/from memory without needing to go through the CPU, improving system efficiency.
56
Which circuit board is used in all electronic systems such as computer, calculators, digital system?
✅ Correct answer: Architecture
A circuit board (also broadly called the underlying 'architecture' of the device) is the common structural component used across all electronic systems, including computers, calculators, and other digital devices.
✅ Correct answer: Motherboard
The CPU and memory are physically located on the motherboard, the main circuit board that houses and interconnects a computer's essential components.
✅ Correct answer: motherboard
The motherboard is the main circuit board in a computer that connects and allows communication between all the essential internal parts, including the CPU, memory, and expansion cards.
✅ Correct answer: Motherboard
The main circuit board holding a personal computer's chips is commonly called the motherboard, the central hub to which all other internal hardware components connect.
✅ Correct answer: All of these
The motherboard hosts several key components, including the CMOS battery (which maintains system settings), cooling fans, and PCI slots (for expansion cards) — making 'All of the above' the correct answer.