1.
The term _______ refers to the computer's physical components, such as the monitor, keyboard, memory chips, and hard drive.
Correct Answer
B. Hardware
Explanation
Hardware refers to the physical components of a computer system. These components include the monitor, keyboard, memory chips, and hard drive. Software, on the other hand, refers to the programs and instructions that tell the hardware what to do. Firmware is a type of software that is permanently stored in hardware devices. Output refers to the information or data that is produced by a computer system. Therefore, the correct answer is hardware.
2.
The ______________ is an output device which produces output on paper.
Correct Answer
C. Printer
Explanation
A printer is an output device that produces output on paper. It is used to create physical copies of digital documents or images. Printers can be connected to a computer or other devices and can produce text, graphics, or both. They are commonly used in offices, homes, and other settings where physical copies of documents are needed.
3.
The ___________ writes data and instructions in storage devices and performs calculations and other data processing.
Correct Answer
A. CPU
Explanation
The CPU, or Central Processing Unit, is responsible for writing data and instructions in storage devices and performing calculations and other data processing. It is the main component of a computer system that carries out the majority of the processing tasks, including executing instructions, performing arithmetic and logical operations, and managing data flow between different components of the system. The CPU acts as the brain of the computer, coordinating and controlling all the operations to ensure efficient and effective data processing.
4.
A ____________ is a pointing device used to move a pointer on the screen and to make selections.
Correct Answer
C. Mouse
Explanation
A mouse is a pointing device that allows users to move a pointer on the screen and make selections. It is commonly used in conjunction with a computer or laptop to navigate through graphical user interfaces and perform various tasks. The mouse typically has buttons that can be clicked to interact with objects on the screen, and it may also have a scroll wheel for scrolling through documents or web pages. Overall, the mouse is an essential tool for controlling and interacting with a computer system.
5.
Computers can only be used for work.
Correct Answer
B. FALSE
Explanation
This statement is false because computers can be used for a variety of purposes, not just work. They can be used for entertainment, communication, research, creativity, and many other activities. Computers have become an integral part of our daily lives and are used for a wide range of tasks beyond just work-related activities.
6.
The term _______ refers to the computer's physical components, such as the monitor, keyboard, memory chips, and hard drive.
Correct Answer
B. Hardware
Explanation
The term "hardware" refers to the computer's physical components, such as the monitor, keyboard, memory chips, and hard drive. These are tangible parts that can be seen and touched. Software, on the other hand, refers to the programs and instructions that tell the hardware what to do. Firmware is a type of software that is permanently stored in a computer's hardware, providing low-level control over its functions. Output refers to the information or data that is produced by a computer system.
7.
The ______________ is an output device which produces output on paper.
Correct Answer
C. Printer
Explanation
A printer is an output device that produces output on paper. It is used to print documents, images, and other types of files. Unlike a monitor, keyboard, or mouse, which are input devices, a printer is specifically designed to create hard copies of digital information. It uses ink or toner to transfer the digital content onto paper, allowing users to have physical copies of their digital files.
8.
The ___________ writes data and instructions in storage devices and performs calculations and other data processing.
Correct Answer
A. CPU
Explanation
The CPU, or Central Processing Unit, is responsible for writing data and instructions in storage devices and performing calculations and other data processing. It is the brain of the computer that carries out all the necessary tasks to execute programs and perform operations. The CPU interacts with other components of the computer system to ensure efficient data processing and execution of instructions.
9.
A ____________ is a pointing device used to move a pointer on the screen and to make selections.
Correct Answer
C. Mouse
Explanation
A mouse is a pointing device that allows users to move a pointer on the screen and make selections. It is commonly used to navigate graphical user interfaces and interact with various software applications. The mouse typically has one or more buttons that can be clicked to perform different actions, such as opening files or selecting text. By moving the mouse across a flat surface, the user can control the position of the pointer on the screen, making it an essential tool for computer navigation and input.
10.
Computers can only be used for work.
Correct Answer
B. FALSE
Explanation
This statement is false because computers can be used for a wide range of activities, not just work. They can be used for entertainment purposes such as gaming, watching movies, or listening to music. Additionally, computers are used for communication, research, creative pursuits like graphic design or video editing, and many other non-work related activities. Therefore, the statement that computers can only be used for work is incorrect.
11.
The computer has the ability to
Correct Answer
D. All of the above
Explanation
The computer has the ability to store data, retrieve data, and process data. This means that it can save information for future use, access previously stored information, and manipulate data to produce desired results. Therefore, the correct answer is "All of the above."
12.
CD-ROM stands for
Correct Answer
D. Compact Disk Read Only Memory
Explanation
CD-ROM stands for Compact Disk Read Only Memory. It is a type of optical disk that is used to store data. The term "compact disk" refers to the physical format of the disk, which is a flat, circular disc that is typically 4.75 inches in diameter. The term "read only memory" indicates that the data on the disk is permanently stored and cannot be modified or erased. CD-ROMs are commonly used for distributing software, multimedia content, and other large files.
13.
The following are examples of software except
Correct Answer
D. Keyboard
Explanation
The given question asks for examples of software, and the correct answer is "keyboard." A keyboard is not a software, but rather a physical input device used to interact with software. The other options listed, such as web browser, Microsoft Word, and Corel Draw, are all examples of software programs that can be installed and used on a computer.
14.
The first electronic computer, the electronic numerical Integrator and computer (ENIAC) was developed in
Correct Answer
A. 1947
Explanation
The correct answer is 1947. This is the year when the first electronic computer, the ENIAC, was developed. ENIAC was a groundbreaking invention that marked the beginning of the electronic computing era. It was developed by John W. Mauchly and J. Presper Eckert at the University of Pennsylvania. ENIAC was a massive machine that used vacuum tubes to perform calculations and was primarily used for military purposes, such as calculating artillery firing tables. Its development paved the way for the advancement of computer technology and laid the foundation for modern computing systems.
15.
The Macintosh computer always use the______________ operating system
Correct Answer
C. Mac OS X
Explanation
The correct answer is Mac OS X because Macintosh computers are specifically designed and manufactured by Apple Inc., and they exclusively use the Mac OS X operating system. This operating system is developed by Apple and is specifically tailored to work seamlessly with their hardware. Therefore, Mac OS X is the operating system that is always used by Macintosh computers.
16.
The brain of any computer system is
Correct Answer
C. CPU
Explanation
The CPU, or Central Processing Unit, is considered the brain of a computer system. It is responsible for executing instructions, performing calculations, and coordinating the activities of all the other hardware components. The CPU contains the control unit, which manages the flow of data and instructions within the system, as well as the ALU (Arithmetic Logic Unit), which performs mathematical and logical operations. Memory is a separate component that stores data and instructions for the CPU to access and process. Therefore, the CPU is the correct answer as it encompasses all the other options and is essential for the functioning of a computer system.
17.
The acronym LED stands forÂ
Correct Answer
C. Light-emitting diodes
Explanation
LED stands for Light-emitting diodes. LED is a type of semiconductor device that emits light when an electric current passes through it. LEDs are commonly used in various applications such as lighting, displays, and indicators. They are energy-efficient, long-lasting, and can produce a wide range of colors. Therefore, the correct answer is Light-emitting diodes.
18.
Web cameras can undertake the following
Correct Answer
D. All of the above
Explanation
The correct answer is "All of the above". Web cameras have the capability to record videos, take pictures, and enable video conferencing. They are versatile devices that can be used for various purposes, such as capturing moments, conducting online meetings, and creating video content. With their ability to perform all these functions, web cameras have become essential tools for communication, content creation, and multimedia applications.
19.
A processor's speed is measured in __________ and __________
Correct Answer
A. Megahertz and Gigahertz
Explanation
A processor's speed is measured in Megahertz (MHz) and Gigahertz (GHz). Megahertz and Gigahertz are units of frequency that measure the number of cycles per second. In the context of a processor, a higher frequency indicates a faster speed and better performance. Megabytes and Gigabytes are units of storage capacity, not speed. Bytes and Kilobytes are also units of storage capacity, not speed. Bits and kilobits are units of data transfer rate, not speed.
20.
A ____________ is the smallest unit of data in computer processing
Correct Answer
C. Bit
Explanation
A bit is the smallest unit of data in computer processing. It represents a binary digit, which can have a value of either 0 or 1. Bits are used to store and transmit information in computers and other digital systems. They are combined to form larger units of data, such as bytes, which consist of 8 bits.
21.
Mobile devices designed mainly for reading e-books are called
Correct Answer
B. E-readers
Explanation
Mobile devices that are specifically designed for reading e-books are commonly known as e-readers. These devices typically have features such as e-ink displays, long battery life, and a wide range of e-book compatibility. They are optimized for reading purposes, providing a comfortable reading experience with features like adjustable font size, backlighting, and bookmarking. Therefore, the correct answer is e-readers.
22.
__________ is the process that occurs when you press the power button to turn your computer on
Correct Answer
B. Booting
Explanation
Booting is the process that occurs when you press the power button to turn your computer on. During the booting process, the computer's hardware is initialized, the operating system is loaded into memory, and various system checks and configurations are performed. This allows the computer to start up and become ready for use.
23.
The following are most common operating systems for personal computers except
Correct Answer
D. Microsoft word
Explanation
Microsoft Word is not an operating system for personal computers. It is a word processing software developed by Microsoft. The other options mentioned, Microsoft Windows, Apple Mac OSX, and Linux, are all operating systems commonly used on personal computers.
24.
Maintaining a computer involves
Correct Answer
D. All of the above
Explanation
Maintaining a computer involves keeping it physically clean to prevent dust and debris from damaging the hardware, protecting it from malware by using antivirus software and practicing safe browsing habits, and backing up important files to prevent data loss in case of hardware failure or other issues. All of these tasks are essential for the proper functioning and longevity of a computer system.
25.
The best way to guard against malware is to install
Correct Answer
C. Antivirus
Explanation
Installing antivirus software is the best way to guard against malware. Antivirus programs are specifically designed to detect, prevent, and remove malware from a computer system. They continuously scan files and programs for any suspicious activity or known malware signatures. By regularly updating the antivirus software, users can ensure that their system is protected against the latest threats. Antivirus software provides a proactive defense against malware, offering real-time protection and preventing potential damage to the computer and its data. Therefore, choosing antivirus as the correct answer is logical and appropriate in the context of guarding against malware.
26.
When a document file is opened from a hard disk, the information making up the file moves from ?
Correct Answer
B. Hard disk to RAM
Explanation
When a document file is opened from a hard disk, the information making up the file moves from the hard disk to the RAM. This is because the RAM (Random Access Memory) is a type of computer memory that is faster and more easily accessible than the hard disk. So, when a file is opened, it is loaded into the RAM for faster processing and manipulation by the computer's processor.
27.
What unit refers to the speed of the computer's microprocessor
Correct Answer
D. Mhz
Explanation
The unit that refers to the speed of a computer's microprocessor is Mhz, which stands for megahertz. Megahertz measures the number of cycles per second that the microprocessor can execute. A higher number of megahertz indicates a faster processor speed, allowing the computer to perform tasks more quickly and efficiently.
28.
Entering customer names and account numbers into a database is an example of ?
Correct Answer
B. Inputting
Explanation
Entering customer names and account numbers into a database is an example of inputting. Inputting refers to the process of entering data into a computer system or database. In this case, the customer names and account numbers are being inputted into the database, which means they are being entered and stored for future use.
29.
What is the speed of a processor measured in?
Correct Answer
B. Hertz
Explanation
The speed of a processor is measured in Hertz. Hertz is a unit of frequency that represents the number of cycles per second. In the context of a processor, it refers to the number of instructions or operations that the processor can execute in a second. A higher frequency or clock speed indicates a faster processor, as it can perform more operations in a given time period. Therefore, Hertz is the correct unit of measurement for processor speed.
30.
Which of the following are types of memory? (select three)
Correct Answer(s)
B. Hard Disk
D. RAM
E. ROM
Explanation
The correct answer options, Hard Disk, RAM, and ROM, are all types of memory. Hard Disk is a type of secondary storage memory that stores data on a magnetic disk. RAM (Random Access Memory) is a type of volatile memory that stores data and instructions temporarily while the computer is running. ROM (Read-Only Memory) is a type of non-volatile memory that stores permanent instructions and data that cannot be modified. CPU and Mouse are not types of memory, but rather components of a computer system.
31.
DATA ENTERD INTO A COMPUTER IS CALLED
Correct Answer
A. INPUT
Explanation
Data that is entered into a computer is referred to as input. Input can come from various sources such as a keyboard, mouse, microphone, or any other device that allows data to be entered into the computer system. Once the data is inputted, it can be processed and manipulated by the computer, and the result is then outputted in the form of information or actions. Therefore, the correct answer is "INPUT".
32.
THE CPU is placed on a printed circuit board called
Correct Answer
C. Motherboard
Explanation
The CPU, or Central Processing Unit, is a key component of a computer system that performs most of the processing inside the computer. It is placed on a printed circuit board called the motherboard, which is the main circuit board that connects and allows communication between all the other components of the computer. The motherboard provides power and data connections to the CPU, as well as other essential components such as memory, storage, and expansion slots. Therefore, the correct answer is motherboard.
33.
In RAM information is stored using ?
Correct Answer
C. Bits
Explanation
RAM (Random Access Memory) stores information using bits. A bit is the smallest unit of information in computing and can have a value of either 0 or 1. RAM is made up of millions or billions of these bits, which are organized into bytes, kilobytes, megabytes, and so on. Each bit represents the state of a tiny electrical switch in the RAM module, and these switches can be quickly accessed and manipulated to store and retrieve data. Therefore, bits are the fundamental units used to store information in RAM.
34.
It stores all data, programs and information in it.
Correct Answer
A. Memory
Explanation
Memory is the correct answer because it is responsible for storing all data, programs, and information. It is a crucial component of a computer system that allows for the storage and retrieval of data. Without memory, a computer would not be able to retain any information or execute programs. Therefore, memory plays a vital role in the overall functioning of a computer system.
35.
All the arithmetic and logic operations are done by the ...
Correct Answer
C. ALU
Explanation
The ALU, or Arithmetic Logic Unit, is responsible for performing all the arithmetic and logic operations in a computer. It is a component of the CPU (Central Processing Unit), which is the main processing unit of a computer. The ALU performs calculations such as addition, subtraction, multiplication, and division, as well as logical operations like AND, OR, and NOT. It is designed to execute these operations quickly and efficiently, making it a crucial part of the CPU's overall functionality.
36.
One byte divided into
Correct Answer
A. 8 bits
Explanation
One byte is divided into 8 bits. Each bit represents a binary value, either a 0 or a 1. Therefore, when a byte is divided into 8 bits, it means that there are 8 binary values within that byte.
37.
It is a permanent storage device
Correct Answer
A. Hard Disk
Explanation
A hard disk is a permanent storage device that is used to store data on a computer. It consists of one or more rigid platters coated with a magnetic material and rotating at high speeds. Data is written and read from the platters using magnetic heads that move across the surface. Unlike CDs or floppies, which are removable and can be easily damaged or lost, a hard disk is typically installed inside a computer and provides a large amount of storage capacity for long-term data storage.
38.
The primary device that a computer uses to store information.
Correct Answer
C. Hard disk
Explanation
The hard disk is the primary device that a computer uses to store information. It is a non-volatile storage device that permanently stores and retrieves data on a computer. It provides a large amount of storage space for files, programs, and operating systems. Unlike temporary storage devices like RAM, the hard disk retains data even when the computer is turned off. Therefore, it is the main storage medium for long-term data storage and retrieval on a computer.
39.
CPU reads the information from secondary memory
Correct Answer
B. First, information is transferred to main memory and from there, the CPU reads
Explanation
In this scenario, the CPU does not directly read the information from secondary memory. Instead, the information is first transferred to the main memory, which acts as an intermediary between the CPU and the secondary memory. Once the information is in the main memory, the CPU can then read it and perform any necessary operations. This process is necessary because the CPU operates much faster than the secondary memory, so transferring the information to the main memory allows for quicker access and processing.
40.
A collection of eight bits is called.
Correct Answer
A. Byte
Explanation
A collection of eight bits is called a byte. A byte is the basic unit of storage in computer systems and is typically used to represent characters or numbers. It is composed of eight bits, each of which can be either a 0 or a 1. Bytes are commonly used in computer programming and data storage, and they are often used to measure the size or capacity of computer memory or storage devices.
41.
BIOS stands for Basic Integrated Operating System.
Correct Answer
B. False
Explanation
The given statement is false. BIOS stands for Basic Input/Output System, not Basic Integrated Operating System. BIOS is a firmware that is responsible for initializing and testing hardware components during the computer's startup process. It provides the basic instructions for the computer to boot up and load the operating system.
42.
Adding RAM is the easiest, fastest and cheapest way to improve computer performance.
Correct Answer
A. True
Explanation
Adding RAM (Random Access Memory) can indeed improve computer performance. RAM is responsible for temporarily storing data that is actively being used by the computer's processor. By increasing the amount of RAM, the computer can handle more data and programs simultaneously, leading to faster and smoother performance. Additionally, adding RAM is relatively easy and inexpensive compared to other hardware upgrades, such as upgrading the processor or storage. Therefore, it can be considered the easiest, fastest, and cheapest way to improve computer performance.
43.
It is like a television set that allows you to see what you are doing on the computer.
Correct Answer
C. Monitor
Explanation
A monitor is a device that displays the output from a computer. It allows the user to visually see what they are doing on the computer. This is similar to a television set, which also displays visual content. The CPU is the central processing unit of a computer, responsible for executing instructions and performing calculations. The keyboard is an input device used to enter text and commands into the computer.
44.
Softcopy means output that you can see but cannot touch
Correct Answer
A. True
Explanation
Softcopy refers to digital or electronic information that is displayed on a screen or monitor, such as a computer, tablet, or smartphone. It is called "soft" because it is intangible and cannot be physically touched or felt. This includes documents, images, videos, or any other form of data that is viewed electronically. Therefore, the statement "Softcopy means output that you can see but cannot touch" is true, as it accurately describes the nature of softcopy information.
45.
Three kinds of printer
Correct Answer
A. Laser Printer,Dot Matrix,Ink Jet Printer
Explanation
The correct answer is Laser Printer, Dot Matrix, Ink Jet Printer. This answer lists the three types of printers correctly, with Laser Printer being the first, Dot Matrix being the second, and Ink Jet Printer being the third.
46.
Sprays ink on paper through tiny nozzles.
Correct Answer
B. Ink Jet Printer
Explanation
The correct answer is Ink Jet Printer. Ink jet printers work by spraying ink onto the paper through tiny nozzles. These nozzles release small droplets of ink onto the paper, creating the text or image. This technology allows for precise and detailed printing, making ink jet printers popular for home and office use.
47.
It uses laser heat and powdered ink to print on paper. the output from this printer is very good.
Correct Answer
C. Laser Printer
Explanation
A laser printer is the correct answer because it uses laser heat and powdered ink to print on paper. This printing method results in a high-quality output.
48.
It display the image on a wall screen.
Correct Answer
A. Projector
Explanation
The correct answer is Projector because a projector is a device that displays images or videos on a wall or screen. It uses a light source to project the image onto a surface, allowing it to be viewed by a larger audience. This explanation aligns with the given statement that mentions "It display the image on a wall screen." A plotter is a device used for printing graphics or drawings, and a voice synthesizer is a device that generates artificial speech.
49.
Large format printer that can print very large sheets for billboards, maps and posters.
Correct Answer
B. Plotter
Explanation
A plotter is a device that is specifically designed to print large format sheets for billboards, maps, and posters. Unlike a regular printer or projector, a plotter uses a pen or a marker to draw precise and detailed images onto the paper. It is commonly used in industries such as advertising, architecture, and engineering, where large-scale prints are required. Therefore, the correct answer for this question is plotter.
50.
A tool used to produce manipulated sound.
Correct Answer
C. Voice synthesizer
Explanation
A voice synthesizer is a tool that is used to produce manipulated sound. It is specifically designed to generate artificial voices or imitate human speech. It can manipulate various aspects of sound such as pitch, tone, and timbre to create different vocal effects. This tool is commonly used in music production, film industry, and even in assistive technology for individuals with speech impairments. It allows users to create unique and customized sounds by manipulating and synthesizing different vocal elements.