Introduction to Computer Engineering MCQs (Part-3)
What is the main purpose of the ALU (Arithmetic Logic Unit)?
A Store data
B Display results
C Process instructions
D Perform calculations
The Arithmetic Logic Unit (ALU) is responsible for performing arithmetic operations (like addition and subtraction) and logical operations (like comparisons) in a computer. It is a key component of the CPU that helps execute instructions.
Which device allows users to interact with the computer by entering commands?
A Input device
B Output device
C Monitor
D Printer
Input devices are used to send data or commands to a computer. Examples include keyboards, mice, and touchscreens. These devices enable users to interact with the computer and input information.
Which computer component is responsible for executing instructions?
A Keyboard
B CPU
C Printer
D Monitor
The CPU (Central Processing Unit) is responsible for executing instructions and performing calculations. It is the primary component that processes data and directs the activities of other parts of the computer.
What is the role of the Control Unit (CU) in a computer?
A Manage memory
B Provide power
C Direct instructions
D Perform calculations
The Control Unit (CU) directs the operation of the processor. It interprets instructions from programs and sends control signals to other components of the computer, directing the flow of data between the CPU, memory, and other devices.
Which of the following represents a form of persistent storage?
A Hard Drive
B Cache
C CPU
D RAM
A hard drive (HDD or SSD) is a form of persistent storage because it retains data even when the computer is turned off. In contrast, RAM is volatile memory and loses data when power is removed.
Which technology enables communication between devices in a local area network?
A Bluetooth
B 4G
C Wi-Fi
D Ethernet
Ethernet is the most common technology for wired communication in local area networks (LANs). It allows devices to connect to a network and exchange data through physical cables, offering reliable and fast communication.
Which of the following is used to connect multiple computers over long distances?
A LAN
B WAN
C USB
D Bluetooth
WAN (Wide Area Network) is used to connect computers over large geographical areas, such as between cities or countries. It uses telecommunications infrastructure to allow data transfer across long distances, unlike a LAN (Local Area Network).
What is the role of an operating system in a computer?
A Display data
B Provide software
C Manage hardware
D Execute instructions
The operating system (OS) manages hardware resources, controls peripheral devices, and provides a user interface. It acts as an intermediary between the user and the computer hardware, ensuring programs run efficiently.
What is the function of system software?
A Control hardware
B Store data
C Create content
D Run applications
System software is responsible for controlling and managing computer hardware. It includes the operating system and utility programs, which help the computer function efficiently and allow users to interact with hardware resources.
Which of the following is NOT an example of application software?
A Spreadsheet
B Operating System
C Word Processor
D Web Browser
An operating system is system software, not application software. System software manages hardware resources, whereas application software is designed for end users to perform specific tasks, such as writing documents or browsing the web.
Which programming language is commonly used for web development?
A Python
B Java
C JavaScript
D C++
JavaScript is widely used in web development to create interactive and dynamic websites. It is a client-side scripting language that runs in the browser and interacts with HTML and CSS to build responsive web pages.
What is the main advantage of cloud storage?
A Faster than local storage
B No need for backups
C Low cost
D Easy access from anywhere
Cloud storage allows users to store data on remote servers and access it from anywhere with an internet connection. It provides flexibility, scalability, and convenience, as users can easily retrieve and share files across devices.
What is the basic function of an algorithm?
A Process data
B Solve problems
C Store data
D Display output
An algorithm is a set of step-by-step instructions used to solve a specific problem or complete a task. In computing, algorithms are crucial for data processing, sorting, and performing calculations.
What is the primary function of a router in networking?
A Route data packets
B Encrypt data
C Connect devices
D Store data
A router is a networking device that forwards data packets between different networks. It directs the flow of data between devices on a local network and other networks, such as the internet, ensuring proper communication.
What is the binary equivalent of the decimal number 8?
A 111
B 101
C 1000
D 1100
The binary equivalent of the decimal number 8 is 1000. In binary, each digit represents a power of 2, and 8 in decimal corresponds to 2^3, which is represented as 1000 in binary.