Computer Literacy MCQ Quiz - Objective Question with Answer for Computer Literacy - Download Free PDF

An operating system is a software program that manages and operates computing devices.

Key Points

•  Mac OS is a powerful operating system that offers similar features and services to Windows and Linux. 
• The Macintosh Operating System (Mac OS) is an operating system developed by Apple Inc.
• It is a graphical user interface-based operating system that was first published in 1984.
• Apple is an American-based company located in California. 
• Mac OS is meant to run on Apple computers and does not support the x86 architecture by default.
• Mac OS has multiple versions available such as Macintosh 128k, Mac OS 7, Mac OS X, and Mac Mountain Lion.

​Therefore, Mac is used by the Apple computer systems (an American technology company).

Additional Information

• Microsoft Windows, usually known as Windows or Windows OS, is a personal computer operating system developed by Microsoft Corporation.
• Linux is a collection of open-source Unix-like operating systems based on Linus Torvalds' Linux kernel which was launched on September 17, 1991.
• Oracle Solaris is also an operating system. 

The correct answer is option 4: Meta

Key Points

In February 2025, Meta (the parent company of Facebook, Instagram, and WhatsApp) announced its plans to construct the world's longest undersea cable. The project is aimed at improving global internet connectivity by connecting multiple countries across five continents.

This undersea cable will have landing points in India and is part of Meta’s larger initiative to bring better internet infrastructure and services to underserved and developing regions.

Explanation of options:

• Option 1 – Microsoft: ❌ Microsoft is involved in cloud and connectivity, but not in this specific project.
• Option 2 – Amazon: ❌ Amazon Web Services (AWS) is a major player in cloud computing, but not in this cable initiative.
• Option 3 – Google: ❌ Google has several undersea cable projects (e.g., Equiano, Dunant), but not this new longest cable in Feb 2025.
• Option 4 – Meta: ✅ Correct. Meta announced this major undersea cable project with landing points in India.

Hence, the correct answer is: option 4: Meta

Peripheral device is an internal or external device that connects to a computer or other digital device directly. 

Key Points

• It facilitates end users' access to and usage of a computer's features.
• Digital signals are converted by output peripherals into information that the end user can understand or use.
• It is possible to further categorise a peripheral as an internal or external peripheral device depending on whether it is housed within or outside the computer system enclosure.
• Examples of input devices are peripheral devices are an optical mark reader (OMR), a graphic tablet and a light pen. 

Thus, Optical Mark Readers, Graphic Tablet and Light Pen of peripheral devices are considered as the only input devices. 

Additional Information

• Input devices translate incoming user commands or actions into usable data that the computer can comprehend.
• Digital signals are converted by output peripherals into information that the end user can understand or use.

The correct answer is Memory chips.

Key Points

• Memory chips are essential components in computers for storing data temporarily or permanently until it is needed.
  • Random Access Memory (RAM) is a type of memory chip that stores data temporarily while the computer is running. It allows data to be read and written quickly, which is crucial for the smooth operation of the computer.
  • Read-Only Memory (ROM) is another type of memory chip that contains essential instructions for booting up the computer and performing basic operations. This data remains intact even when the computer is turned off.
  • Memory chips can also be used for more permanent storage in the form of flash memory, such as that found in solid-state drives (SSDs) and USB flash drives.
  • Overall, memory chips play a vital role in maintaining the computer's functionality by storing data until it is needed for processing by the CPU.

Additional Information

• Memory chips come in various forms and capacities, catering to different requirements of speed, storage, and power consumption.
• Advancements in memory technology continue to improve the efficiency and performance of computers, enabling them to handle more complex tasks and larger datasets.
• The integration of memory chips with other components, such as the CPU and storage devices, enhances the overall performance and responsiveness of modern computing systems.

The correct answer is - (C), (A), (D), (B)

Key Points

• CD-ROM
  • CD-ROM stands for Compact Disc Read-Only Memory.
  • It typically has a storage capacity of around 700 MB.
• DVD
  • DVD stands for Digital Versatile Disc or Digital Video Disc.
  • A standard single-layer DVD has a storage capacity of 4.7 GB.
• Blu-Ray Disc
  • Blu-Ray Disc is designed for high-definition video and data storage.
  • A standard single-layer Blu-Ray Disc can hold up to 25 GB of data.
• Hard Disk
  • A Hard Disk Drive (HDD) is used for storing large amounts of data.
  • Modern hard disks can store anywhere from a few hundred gigabytes to several terabytes (1 TB = 1024 GB).

Additional Information

• Storage Capacity Context
  • Storage devices are categorized based on their ability to store data, typically measured in megabytes (MB), gigabytes (GB), and terabytes (TB).
  • Optical discs like CD-ROMs, DVDs, and Blu-Ray Discs are often used for media storage and backups, while hard disks are used for extensive data storage needs.
• Technological Evolution
  • As technology has advanced, the storage capacity of devices has increased significantly, allowing for more data to be stored in smaller physical spaces.
  • From CD-ROMs to Blu-Ray Discs, and then to Hard Disks, there has been a notable increase in data storage capacity over the years.

the correct answer is ​GigaHertz.

Key Points

• Clock speed:
  • Clock speed is the significant way to measure the performance of Processor.
  • ​CPU processes many instructions (low-level calculations like arithmetic) from different programs every second. The clock speed measures the number of cycles your CPU executes per second, measured in GHz (gigahertz).
  • A “cycle” is technically a pulse synchronized by an internal oscillator, but for our purposes, they’re a basic unit that helps understand a CPU’s speed.
  • During each cycle, billions of transistors within the processor open and close.
  • A CPU with a clock speed of 3.2 GHz executes 3.2 billion cycles per second.

The correct answer is Control Unit and ALU.

• Computers have become pervasive in every walk of life.
• It has changed the way we work, play, communicate and learn.
• A computer essentially comprises of a set of hardware and software.

Key Points

The Central Processing Unit (CPU):

• The CPU is the brain of the computer.
• Sometimes referred to simply as the processor or central processor, the CPU is where most calculations take place.
• The CPU executes the programs and controls the operation of all the hardware.
• The three main components of the CPU are:

The Control Unit (CU):

• It is one of the most important parts of the microprocessor as it is in charge of the entire process.
• The control unit extracts instructions from memory and decodes them.
• Based on these instructions, it creates control signals that tell the Arithmetic Logic Unit (ALU) and the Registers how to operate, what to operate on and what to do with the result.
• The role of the control unit in the CPU is that of a “manager”.
• In other words, it controls and coordinates all hardware operations.

The Arithmetic and Logic Unit (ALU):

• It is the section where the actual data processing takes place.
• All calculations and comparisons take place in this section.
• In addition to arithmetic functions, the ALU also handles logic operations.
• All mathematical operations are performed in binary numbers and all logic operations are performed using binary operations.

The Primary Memory (Main memory):

• This unit stores programs during their execution, stores data that are being used by the current program and stores the operating system which controls the operation of the computer system.
• It consists of Random Access Memory (RAM) where the user's programs and data must be stored in order to be run and Read-Only Memory (ROM) where permanent programs and data are built-in by the manufacturer.

Hence, it is clear that the Control Unit and ALU are the two main components of the CPU.

• BUS: It is a Data Communication System in a computer network. The ALU and CU that are linked internally and externally by busses which carry binary signals between.

• Register: They can be thought of as the CPU’s tiny scratchpad, temporarily storing instructions or data.

The correct answer is Random Access.

Key Points

• Random Access:
  • ​In computer science, random access is the capability to have access to any item from a given population of elements at random.
  • Random access is the opposite of sequential access, as sequential access locates elements by beginning at a particular predefined location and then traversing through all of the information in order to find the given item.
  • Random access has gained interest due to the fact that one can retrieve a record irrespective of the position in which it is located.
  • Random access is also known as direct access.

Compilers:

• A compiler is a program that translates a source program written in some high-level programming language into machine code for some computer architecture.
• The generated machine code can be later executed many times against different data each time.
• It writes the text into a format that the CPU can understand
• This is a kind of system software

Touch screen monitors:

• This is a device that helps the user to interact with the computer using their finger
• It is an alternative to mouse and keyboard for navigating a Graphical User Interface (GUI)
• It allows tough sensitive inputs as well as outputs.

Therefore it is clear that Compilers are software and Touch screen monitors are input/output devices. So both the statements are true.

An operating system is a software program that manages and operates computing devices.

Key Points

•  Mac OS is a powerful operating system that offers similar features and services to Windows and Linux. 
• The Macintosh Operating System (Mac OS) is an operating system developed by Apple Inc.
• It is a graphical user interface-based operating system that was first published in 1984.
• Apple is an American-based company located in California. 
• Mac OS is meant to run on Apple computers and does not support the x86 architecture by default.
• Mac OS has multiple versions available such as Macintosh 128k, Mac OS 7, Mac OS X, and Mac Mountain Lion.

​Therefore, Mac is used by the Apple computer systems (an American technology company).

Additional Information

• Microsoft Windows, usually known as Windows or Windows OS, is a personal computer operating system developed by Microsoft Corporation.
• Linux is a collection of open-source Unix-like operating systems based on Linus Torvalds' Linux kernel which was launched on September 17, 1991.
• Oracle Solaris is also an operating system. 

Hence,  the incorrect pair is .ttf - word text file.

Key Points

Motherboard:

• The Motherboard is the main circuit board for the computer, containing both soldered, nonremovable components along with sockets or slots for components that can be removed.
• The motherboard holds the CPU, RAM and ROM chips, etc.

Additional Information

• The Arithmetic Logic Unit (ALU) performs arithmetic operations (such as addition and subtraction) and logical operations (such as comparing two values).
• The Control Unit deciphers and carries out instructions.
• A hard disk is similar to a floppy disk but uses metal platters to store information. Hard disks are not only much faster than floppy disks but can hold huge amounts of data (hundreds of gigabytes).

Hence, only motherboard holds together the various important components of a computer such as the CPU, memory, and input/output devices

The vacuum tube is the key technology for making first-generation computers.

Key PointsVaccumTube:

• The first generation computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms.
• Lee De Forest developed the vacuum tube.
• A vacuum tube is a device generally used to amplify a signal by controlling the movement of electrons in an evacuated space.​

Additional InformationTransistor-  It is an electronic component that can be used as an amplifier or as a switch. It is used to control the flow of electricity in radios, televisions, computers, and others.

Integrated Circuit- A small electronic circuit printed on a chip (usually made of silicon) contains many of its own circuits element.

Dual-Core CPU- Dual-core is a CPU that has two distinct processors that work simultaneously in the same integrated circuit. This type of processor can function as efficiently as a single processor but can perform operations up to twice as quickly. Because each core has its own cache, the operating system is able to handle most tasks in parallel.

Hence, the Vacuum Tube is the key technology for making first-generation computers.

The correct answer is Compiler.

Key Points

• System software is generally prepared by computer manufacturers.
• These software products comprise programs written in low-level languages, which interact with the hardware at a very basic level.
• System software serves as the interface between the hardware and the end-users.
• Compilers translate coded programs written in high-level languages into machine instructions that can be understood by processors.
• System software, such as operating systems, hypervisors, and distributed protocols, are also essential components of modern computing systems.

Hence, the correct answer is Compiler.

The correct answer is Read-Only Memory (ROM)

Key Points

• ROM stands for Read-Only Memory.
• ROM is a storage device that is used with computers and other electronic devices.
• Data stored in ROM may only be read.
• ROM is used for firmware updates, which means It contains the basic instructions for what needs to happen when a computer is powered on.
• Firmware is also known as BIOS, or basic input/output system. 
• ROM is non-volatile storage, which means the information is maintained even if the component loses power.
• ROM is located on a BIOS chip which is plugged into the motherboard.
• ROM plays a critical part in booting up or starting up, your computer.

Important Points