Introduction to Computers MCQ Quiz - Objective Question with Answer for Introduction to Computers - Download Free PDF

The correct answer is option 3.

 Key Points

• The part of the computer used for calculating and comparing is the Arithmetic Logic Unit (ALU).
• The ALU performs arithmetic operations (addition, subtraction, multiplication, division) and logical operations (AND, OR, NOT) on data.
• The ALU is a component of the CPU (Central Processing Unit). • The ALU operates on binary data.

 Additional Information

• Disk unit: The disk unit is used for storage of data and programs. It is not involved in calculating or comparing data.
• Control unit: The control unit is responsible for coordinating and controlling the operations of the CPU. It does not directly perform calculations or comparisons.
• Modem: A modem is a device that enables communication between computers over a network. It is not involved in calculating or comparing data. 

The correct answer is C.

• The Control Unit of the computer is called the nerve centre of the computer. 
• The brain of the computer is called the CPU.
• CPU stands for Central Processing Unit.
• The central processing unit is known as the heart of the computer and the memory unit is known as the brains of the computer.
• It’s because the memory stores all the data and retrieves it anytime, anywhere.

Additional Information

• The computer was invented by Charles Babbage.
• Charles Babbage is known as the Father of the Computer.
• Ada Lovelace is known as the Mother of the Computer.
• First Personal Computer was invented in 1974 by MITS.
• Tata Institute of Fundamental Research Automatic Calculator(TIFRAC) was the first computer in India.

The correct answer is Control Unit (CU)

Key Points

• Control Unit (CU): The Control Unit is an essential part of the Central Processing Unit (CPU) and serves as the primary instructor for all other parts of the computer.
• It does not perform any actual processing on the data but instead manages and coordinates all of the hardware in the system.
• It sends timing and control signals to the other components to regulate the data flow and execution of instructions.

Additional Information

• ROM (Read-Only Memory): ROM is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM can only be read, not written to. It's used to permanently store instructions that bootstrap the computer system when powered on (also known as firmware). It doesn't direct or maintain order in the system.
• Motherboard: The motherboard is the main printed circuit board in a computer, and it holds many of the crucial components of the system, including the CPU, memory, and connectors for input and output devices. While it provides the connections between the CPU, RAM, and peripherals, it does not direct the operation of the entire system or process the data itself.
• I/O Unit (Input/Output Unit): The I/O unit is responsible for handling the input and output operations of a computer. These units take input from the user (like mouse clicks or key presses) and output data (like displaying things on the monitor or printing). While they transmit data between the user and the computer, they don't direct the operation of the entire system or

The correct answer is New Folder.

Key Points

• When a user creates a new folder in Windows, it is automatically named "New Folder".
• If a user creates multiple folders, the subsequent folders are automatically named "New Folder (1)", "New Folder (2)", etc.
• The name can be changed by the user immediately after creation or later by right-clicking on the folder and selecting "Rename".
• This default naming convention helps users quickly identify newly created folders before assigning custom names.

Additional Information

• The "New Folder" name convention applies to all recent versions of the Windows operating system, including Windows 10 and Windows 11.
• Users can also use the "Ctrl+Shift+N" shortcut to quickly create a new folder in Windows Explorer.
• After creating a folder, pressing "F2" allows the user to immediately rename the folder.

The correct answer is option 1 i.e Motherboard.

• Motherboard:
  • It is the main printed circuit board (PCB) in general-purpose computers and other expandable systems.
  • It allocates power and allows communication between, many of the electronic components of a system, such as the central processing unit (CPU) and memory, and all other hardware components.
• Peripheral card:
  • It is a supporting device used to put information into and get information out of the computer.
  • Some of the categories of peripheral devices based on their relationship with the computer:
    • An input device sends data or instructions to the computer, such as a mouse, keyboard, graphics tablet, image scanner etc.
    • An output device provides output from the computer, such as a computer monitor, projector, printer, headphones and computer speaker etc.
    • An input/output device performs both input and output functions, such as a computer data storage device e.g - disk drive, USB flash drive, memory card and tape drive.
• SCSI:
  • It stands for Small Computer System Interface.
  • It is a set of parallel interface standards developed by the American National Standards Institute (ANSI) for attaching printers, disk drives, scanners and other peripherals to computers.
• Port:
  • It is a physical docking point using which an external device can be connected to the computer.
  • It can also be programmatic docking point through which information flows from a program to the computer or over the Internet.
  • External devices attached via ports are the mouse, keyboard, monitor, microphone, speakers, etc.

The correct answer is Query language.

Key Points

The various generations of computers are listed below:

The correct answer is Integrated circuits.

Key Points

Third Generation (1964-1977):

• This generation was introduced by the development of a small chip consisting of the capacity of the 300 transistors
• These Integrated Circuits (IC)s are popularly known as Chips.
• So it is quite obvious that the size of the computer got further reduced
• Some of the computers developed during this period were IBM-360, ICL-1900, IBM-370, and VAX-750
• Higher-level language such as BASIC (Beginners All-purpose Symbolic Instruction Code) was developed during this period​

Additional Information

The correct answer is PARAM 8000.

Key Points

• PARAM 8000 is considered to be the first supercomputer developed in India.
• PARAM is a series of supercomputers developed by C-DAC in Pune.
• PARAM supercomputers developed under the leadership of Vijay P Bhatkar.
• Supercomputers developed by India are EKA, PARAM, Kabru, Blue Gene.
• Pratyush is India's fastest supercomputer.

Additional Information

• SAGA 220 is the supercomputer developed by ISRO in 2011.
• PARAM Yuva II is the fastest in the prestigious PARAM series of Supercomputers built in India.
• SAHASRA T provides service in the fields of aerospace engineering, meteorology predictions, and astrological simulation.
• Seymour Cray is considered the father of the supercomputer.
• CDC 6600 is the world's first supercomputer.

 Important Points

• As of June 2023, the AIRAWAT supercomputer is the fastest supercomputer in India, having been ranked 75th fastest in the world in the TOP500 supercomputer list.

The correct answer is MHz.

Key Points

• Speed of Processor
  • ​Processor speed is relative to the clock speed which is measured in units of cycles per second.
  • CPUs run at rates of millions and billions of Hertz, megahertz(MHz) and gigahertz(GHz).
  • A clock speed of 3.5 GHz to 4.0GHz is generally considered a good processor speed.

Additional Information

• Processor(CPU)
  • A CPU is also called a central processor, main processor, or just processor, is the electronic circuitry that executing instructions comprising a computer program.
  • The CPU performs basic arithmetic, logic, controlling, and input/output operations specified by the instructions in the program.
  • The fundamental operation of most CPU's regardless of the physical form they take is to execute a sequence of stored instructions called a program. 
• Instructions cycle in Processor(CPU)
  • All CPU's follows the following steps in order to complete their operations:
    1. Fetch: The first step, involves retrieving instructions from the program memory.
    2. Decode: The instruction that the CPU fetches from the memory determines what the CPU will do, which is decoded by the instructor decoder.
    3. Execute: In this step, all the desired functions are performed as per the instructions decoded.

The correct answer is high-level language.

• Python is a high-level language.

Key Points

• Python
  • It is a high-level language.
  • It allows programming in Object-Oriented and Procedural paradigms. 
  • The language was created by Guido van Rossum.
  • It was first released in 1991.
  • It is used for web development (server-side), software development, mathematic, and system scripting.
  • It can work on platforms like Windows, Mac, Linux, Raspberry Pi, etc

Additional Information

• Machine language and Assembly language are an example of a low-level language.
  • Machine language is a low-level language that is comprised of binary digits i.e. ones and zeros. 
  • An assembly language is a language designed for a specific type of processor.

The correct answer is Numerical. 
"Electronic Numerical Integrator and Computer".

Key Points 

• In the year 1945, the first electronic general-purpose and digital computer, ENIAC was introduced.
• The full form of the ENIAC is Electronic Numerical Integrator and Computer.
• ENIAC was first used by the US Army's Ballistic research.

Thus the correct answer is Electronic Numerical Integrator and Computer.

Additional Information 

• First-generation computer: In the first-generation computer, the technology used is a vacuum tube. It is made of glass and was very much fragile. 
• Second-generation computer: In the second-generation computer, the technology used is a transistor. The material used behind the transistor is made of a semiconductor.
• Third-generation computer: In the third-generation computer, the technology used is an IC or Integrated Circuit. In this generation, high-level language is used.
• Fourth-generation computer: In the fourth-generation computer, the technology used is VLSI and microprocessor.
• Fifth-generation computer: In the fifth-generation computer, the technology used is ULSI technology.

The correct answer is Third Generation.

• Generation in computer terminology is a change in technology a computer is/was being used.
• Initially, the generation term was used to distinguish between varying hardware technologies.
• Nowadays, generation includes both hardware and software, which together make up an entire computer system.

Important Points

• There are five computer generations known to date:

  GENERATION	DESCRIPTION
  1st (1946-1959)	Vacuum tube-based.
  2nd (1959-1965)	Transistor-based.
  3rd (1965-1971)	Integrated Circuit based.
  4th (1971-1980)	VLSI microprocessor-based.
  5th (1980-onwards)	ULSI microprocessor-based.

The correct answer is Terabytes (TB).

• 1 Petabyte = 1024 Terabytes.
• The units of Computer Memory Measurements are: ​
  •  1 Bit = Binary Digit.
  •  8 Bits = 1 Byte
  • 1024 Bytes = 1 KB (Kilo Byte)
  • 1024 KB = 1 MB (Mega Byte)
  • 1024 MB = 1 GB (Giga Byte)
  • 1024 GB = 1 TB (Terra Byte)
  • 1024 TB = 1 PB (Petabyte)
  • 1024 PB = 1  EB (Exa Byte)
• ​Geop byte is the highest memory measurement unit.

The correct answer is: Option 1) Virus

Key Points

• A Virus is a piece of programming code that inserts itself into another program or file to spread and cause damage (e.g., corrupting data, stealing information, or disrupting system operations).

• Malware (Option 2) is a broader term that includes viruses, worms, ransomware, etc., but the question specifies a "piece of code inserted into another program," which matches a virus more precisely.

• Spam (Option 3) refers to unwanted emails/messages, not malicious code.

• Viral (Option 4) describes content spreading rapidly online, not a harmful program.

• A virus requires a host program to attach itself to, while other malware (like worms) can operate independently.

Final Answer:
✅ Option 1) Virus

The correct answer is Douglas T Ross.

Key Points

• APT stands for Automatically Programmed Tool.
  • It was developed by Douglas T Ross.
  • It is a language that defines the tool path with respect to the part geometry and often forms the basis for post-processor generated NC files.

Additional Information

• The APT programming language is a language for defining tool paths on CNC machines.
• The APT language consists of four types of statements:
  • ​Geometry statements will be used to specify the elemental features defining the part shape
  • Motion statements are used to specify the path taken by the tool
  • Post-processor statements control the machinery, controlling coolants as well as the feeds and speeds.
  • Auxiliary statements complete the picture, specifying the part, required tools, etc.