Best and important Computer Literacy and Knowledge questions with answers and explanations – multiple-choice questions (MCQs) – for competitive and government exams – UPSC, Civil Service prelims, CDS, NDA, SSC CGL, CHSL, CPO, MTS, ASRB, Junior Court Assistant exams, previous year computer solved questions, central and state government exams
computer literacy and knowledge questions and answers – set 3
________ is when the more power hungry components, such as the monitor and hard drive, are put in idle:
2. Power down
3. Standby mode
4. The shutdown procedure
Answer: 3. Standby mode
Standby (or sleep) mode is a mode the computer, monitor or other devices enters when idle for too long. This mode helps conserve power when a computer or computer device is not in use without having to sacrifice the time it would take to turn off and on the computer.
Hard disk drives are considered ____ storage.
Answer: 2. Non-volatile
A hard disk drive (HDD) is a non-volatile storage device for digital data. That is, it is the computer’s main storage media device that permanently stores all data on the computer.
The _______ key and the _____ key can be used in the combination with other keys to perform shortcuts and special tasks.
1. Control, Alt
2. Function, toggle
3. Delete, insert
4. Caps Lock, Num Lock
Answer: 1. Control, Alt
Alt, Ctrl, and Shift keys are modifier keys. Modifier keys temporarily modifies the normal action of another key when pressed together. They are often used with other keys to perform computer keyboard shortcuts. eg. Ctrl + C is the shortcut to copy text. Alt + F4 in Microsoft windows will close the programe in the active window.
The most common input devices are the ____ and the ____.
1. microphone, printer
2. scanner, monitor
3. digital camera, speakers
4. keyboard, mouse
Answer: 4. keyboard, mouse
The most common input devices are keyboard and mouse which helps in feeding data into the computer.
To save an existing file with a new name or to a new location, you should use the ______ command.
2. Save and replace
3. Save as
4. New file
Answer: 3. Save as
When you save a document (or file) for the first time, you will need to mention a name for that document. To do that go to File > Save AS. A file name is used to uniquely identify a computer file stored in a file system.
Which type of software manages the computers processes, functioning as an interface, connecting the user, the application software and the hardware?
1. System software
2. Utility program
3. Translator program
4. Operating system
Answer: 4. Operating system
Operating system is a software that controls the operation of a computer, directs the input & output of data, keep track of files and controls the processing of computer programs. Its role include managing the functioning of the computer hardware, running the application programs, serving as an interface between the computer and the user and allocating computer resources to various functions.
The portion of the CPU that coordinates the activities of all the other computer components is the
2. Coordination board
3. Control unit
4. Arithmetic logic unit
Answer: 3. Control unit
The control unit is the component of the processor that directs and co-ordinates most of the operations in the computer. It is the circuitry that controls the flow of information through the processor and co-ordinates the activities of the other units within it. In a way, it is the “brain within it brain”, as it controls what happens inside the processor, which in turn controls the rest of the PC.
Something which has easily – understood instructions is said to be__________.
1. User friendly
3. Word processing
Answer: 1. User – friendly
In computer, user-friendly refers to something which is easy to learn, understand and deal with. eg. menu-driven programs are considered more user-friendly than command driven systems. Graphical user interfaces are also considered user friendly. They all make it easier for novices to use a computer.
In a database ________ fields store numbers used to perform calculation.
Answer: 4. Numeric
In a database, you use data types to specify the type of data each field can capture. you can enter numbers into the number (or numeric) field and then average, sum or perform other calculations with the numbers eg. you can assign a Test Score field a data type of number.
A(n) _________ is a combination of hardware and software that facilitates the sharing of information between computing devices.
3. Expansion board
4. Digital device
Answer: 1. Network
A computer network is a group of computers and other hardware devices that are linked together through communication channels to facilitate communication and resource- sharing among a wide range of users.
Which of the following statements is true concerning
1. Virtual memory is the space on the hard drive where the operating system begins to store data when it becomes memory-bound
2. Accessing data from RAM is a slower than accessing data from virtual memory.3. When it is using virtual memory, the operating system builds a file called the RAM file4. If a computer is memory – bound, adding more RAM will not solve the problem
Answer: 1. Virtual memory is the space on the hard drive where the operating system begins to store data when it becomes memory-bound
Virtual memory refers to the space on the hard drive that the operating system store data to, if you don’t have enough random access memory (RAM) to hold all of the programs you’re currently trying to run.
The term bit is short for ––––
2. Binary language
3. Binary digit
4. Binary number
Answer: 3. Binary digit
A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.
All of the following terms are associated with spread sheet software except.
4. virus detection
Answer: 4. virus detection
A worksheet is an arrangement of rows and columns, making up cells into which various types of data and formulas can be entered. Formulas are used to perform calculations in Excel.
___________ are devices used to transmit data over telecommunications lines.
2. Drives bays
Answer: 3. Modems
A modem (modulator – demodulator) is an electronic device that makes possible the transmission of data to or from a computer via telephone or other communication lines.
A _________ is approximately one billion bytes.
Answer: 3. gigabyte
A gigabyte (GB) is a measure of computer data storage capacity which is equal to 1,024 megabytes (or 2 30 bytes). It is approximately equal to one billion bytes.
A repair for a known software bug, usually available at no charge on the internet, is called a (n) ____.
Answer: 2. patch
A software patch is a piece of software code that can be applied after the software program has been installed to fix a specific issue with that program. Patches are available as downloads over the internet, free of cost.
Computers gather data, which means that they allow users to _______ data.
Answer: 2. Input
Input allows user to enter or feed data into a computer through input devices such as keyboard, mouse, scanner, etc.
Which of the following terms is just the connection of networks that can be joined together?
1. Virtual private network
Answer: 2. Internet
The internet is a global system of inter connected computer networks that use the standard internet protocol suite (TCP/IP) to serve several billion users worldwide.
________is a form of permanent memory that holds all the instructions the computer needs to start up does not get erased when the power is turned off.
1. The Network Interface Card (NIC)
2. The CPU
Answer: 4. ROM
ROM (read only memory) is a computer memory on which data has been pre recorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read. It retains the contents even when the computer is turned off. It contains programs such as the program that boots the computer.
Servers are computers that provide resources to the other computers connected to a ____
3. Super computer
Answer: 1. Network
A network server is a computer designed to process requests and deliver data to other computers over a local network or the Internet.
The standard protocol of the Internet is —-
Answer: 1. TCP/IP
TCP/IP (Transmission Control Protocol/ Internet Protocol) is the suite of communication protocols used to connect hosts on the internet. It is the defacto standard for transmitting data over networks.
After a user has saved and deleted many files, many scattered areas of stored data remain that are too small to be used efficiency, causing
Answer: 4. Fragmentation
Fragmentation occurs when a process which are loaded or removed from memory. The free memory space is broken into little pieces, such type of pieces may or may not be of any use to be allocated individually to any process. This may give rise to memory wastage or fragmentation. So, it is a phenomenon in which storage space is used inefficiently, reducing capacity & often performance.
Which of the following is the communication protocol that sets the standard used by every computer that accesses Web-based information?
Answer: 3. HTTP
HTTP (hyper text transfer protocol) is a set of standards that allow users of the world wide web to exchange information found on web pages. It provides a standard for web browsers and servers to communicate.
When you install a new program on your computer, it is typically added to the ____ menu?
1. All Programs
2. Select Programs
3. Start Programs
4. Desktop Programs
Answer: 1. All Programs
Every program that’s currently installed on your computer is listed in All programs menu. On the start menu. Also, when you install new programs, they get added to the All programs list.
Which one of the following is a key function of a firewall?
Answer: 1. Monitoring
A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analyzing the data packets and determining whether they should be allowed through or not, based on a rule set.
______ are a type of inexpensive digital camera that remains tethered to a computer and used for video conferencing, video chatting and live Web broadcast.
3. Browser cams
Answer: 1. Webcams
A web camera (or web cam) is a real time camera whose images can be accessed using the world wide web, instant messaging or a PC video calling application. It delivers images to a web server, either continuously or at regular intervals.
e-marketing is same as ____
1. Virtual marketing
2. Digital marketing
3. Real time marketing
4. All of these
Answer: 2. Digital marketing
Online marketing/internet marketing/E-marketing is the marketing and promotion of products or services over the internet. Digital marketing is marketing that makes use of electronic devices such as computers, tablets, smartphones, cellphones, digital billboards and game consoles to engage with consumers and business partners. E-marketing is a major component of digital marketing. It has a common base, it is the stream of advertising you choose.
Which of the following is NOT hardware of a computer?
2. Key board
4. Central Processing Unit
Answer: 3. Real time marketing
Microsoft windows is a group of operating systems manufactured by Microsoft.
Which is of the following is NOT a famous operating system? 1. Windows vista
2. Mac OS
4. Sun OS
5. Virtual Box
Answer: 5. Virtual Box
A virtual box is a software virtualization package that install on an operating system as an application. Virtual box allows additional operating system to be installed on it, as a Guest OS, and run in a virtual environment.
Which of the following are all considered advantages of email?
1. Convenience, speed of delivery, generality and reliability
2. Printable, global and expensive
3. Global, convenience and Microsoft owned
4. Slow delivery, reliable, global and inexpensive
Answer: 1. Convenience, speed of delivery, generality and reliability
Advantages of email include:-
• Speed of delivery: Email are fast. They are delivered at once around the world.
• Convenience: Emails are easy to use. You can organize your daily correspondence, send & receive electronic messages and save them on computers. Also, you can read emails at your own convenient time.
• Reliability: Transmission is secure and reliable. Email is private. Often telephone and fax messages are not.
• Generality: Same message can be sent to many recipients. Also, you can send letters, notes, files, data or reports all using the same techniques.
Any computer parts that you can actually touch are considered to be:
Answer: 1. Hardware
The computer hardware refers to the physical parts or components of a computer system that can be seen or touched. They can be classified into input devices, output devices and storage devices.
In a relational database, tables are logically linked to each other by a:
3. Field type.
4. field size
Answer: 1. Key
Table can contain primary keys as well as foreign keys. Primary keys serve to differentiate records from one another, they can be individual attribute or a combination of attributes. Foreign keys relate or link tables in the database to one another and generally define the parent-child relationship between tables. A foreign key in one table may be primary key in another.
Hardware components are:
1. Physical parts of a computer system.
2. Fully functional without computer software.
3. Impossible to add on after the initial purchase of a computer.
4. The intangible parts of a computer system
Answer: 1. Physical parts of a computer system.
Hardware components of a computer system are physical or tangible parts that can be see or touched. eg. monitor, CPU, printer, etc.
A ____ is a named set of characters that have the same characteristics.
1. Type face
2. Type style
Fonts are designed for a set of characters. It is a graphical representation of text that may include a different typeface, point size, weight or design. eg. Times Roman is a typeface that defines the shape of each character. Within Times Roman, there are many fonts to choose from different sizes, italic, bold, etc.
A _____ pre-designed document that already has coordinating fonts, a layout, and a background.
Answer: 4. Template
A template is a tool for enforcing a standard layout and look and feel across multiple pages or within content regions. When you change a template, any pages or regions that are based on that template are automatically changed as well. It is something which is pre-formatted.
36. Which element of a Word document can be displayed in colour?
1. Only graphics
2. Only text
3. All elements
4. All elements, but only if you have a colour printer
Answer: 3. All elements
All elements whether text or graphics can be displayed in a color. The user can choose color of his/her choice.
A complete electronic circuit with transistors and other electronic components on a small silicon chip is called a (n).
3. Magnetic disk
4. Integrated circuit
Answer: 4. Integrated circuit
An Integrated circuit (IC), also called a chip or microchip, is a semiconductor wafer on which thousands or millions of tiny resistors, capacitors and transistors are fabricated.
A device operating at the physical layer is called a
4. All of the above
Answer: 3. Repeater
A repeater is an electronic device that receives a signal and retransmits it at a higher level or higher power or onto the other side of an obstruction, so that signal can cover longer distances. Because repeaters work with the actual physical signal and do not attempt to interpret the data transmitted, they operate on the physical layer, being the first layer of the DSI model.
A ____ can make it easier to play games.
Answer: 2. Joystick
In computers a joystick is a cursor control device used in computer games and assistive technology. It allows an individual to move an object in a game such as navigating a plane in a flight simulator.
Something which has easilyunderstood instructions is said to be____
1. User friendly
3. Word processing
Answer: 1. User friendly
In computer, user-friendly refers to something which is easy to learn, understand and deal with, eg. menu-driven programs are considered more user-friendly than command driven systems. Graphical user interfaces are also considered user friendly. They all make it easier for novices to use a computer.