Computer Knowledge - 6 - SSC CGL MCQ

The correct answer is option 2.

Key Points

• CAD stands for Computer Aided Design.
• CAD is a software technology used by architects, engineers, and designers to create 2D and 3D models of products and structures.
• CAD software helps to improve accuracy, reduce errors, and increase productivity in the design process.
• CAD is used in a variety of industries including automotive, aerospace, and construction.

Additional Information

• Computer add dialog: There is no such term as "computer add dialog" in the field of computer-aided design.
• Computer Aided Data: - This option is incorrect as "data" is a broad term and does not specifically refer to the process of design.
• Computer Aided Diagram: This option is incorrect as "diagram" is a specific type of visual representation and does not encompass the entire design process.

The correct answer is option 4.

Key Points

• The fundamental idea behind how a mouse functions is based on electro-mechanical principles.
• When a user moves the mouse, a ball or optical sensor inside the mouse moves as well, which then sends signals to the computer to move the cursor on the screen.
• The signals are sent through a wire or wireless connection, depending on the type of mouse being used.
• Electro-mechanical mice have been largely replaced by optical or laser mice, which use light sensors instead of a ball to track movement.

Additional Information

• Electro-magnetic: These principles are used in devices like speakers and headphones, but not in the functioning of a computer mouse.
• Electro-operational: The term "electro-operational" does not have a clear meaning in the context of a computer mouse.
• Electro-optical: Optical mice do use light sensors to track movement, but this is only one part of the overall electro-mechanical process that enables a mouse to function.

The correct option is (1)

Post Office Protocol

Key Points

• Gmail's email can be synced with any email client that supports POP, including Outlook, Thunderbird, and Apple Mail. POP is an acronym for post office protocol.
• End users can fetch and receive email via POP, an application layer protocol in the OSI model.
• It is an internet standard protocol for computer networking that extracts and retrieves email from a remote mail server so that the host machine can access it.
• POP offers certain benefits in certain circumstances, but it is currently mainly out of date. Even if you leave a copy of the email on the server, you can run into issues because it's not intended for checking email from numerous devices.
• The point of presence is referred to as POP. It is a location where numerous gadgets can connect to one another and communicate.

The correct option is (1)

Touch screen

Important Points

• A touchscreen or touch screen is an assembly of a touch panel for input and a display for output.
• Instead of using a mouse, touchpad, or other similar devices, the user can interact directly with what has been displayed thanks to the touchscreen.
• Devices like gaming consoles, laptops, electronic voting machines, and point-of-sale (POS) systems frequently have touchscreens.

Additional Information

LCD projector panel:- Although it is no longer manufactured, a projection panel—also known as an overhead display or LCD panel—was once used in place of a data projector. With an overhead projector, it functions. A fan is used to keep the translucent LCD on the panel cool.

Audio cards:- A sound card, often known as an audio card, is an add-on component that plugs into an ISA or PCI slot on a motherboard to allow a computer to receive, process, and output sound.

Printer: A printer is a hardware output device that is used to generate hard copies and print any document. A document can be of any type such as a text file, image, or a combination of both. It accepts input commands by users on a computer or on other devices to print documents.

Memory is required in the webserver to downloading anything.
Explanation:

• This statement is 1 incorrect. Memory in the webserver is not required for downloading anything.
• When a user requests a file or webpage from a web server, the server sends the data to the user's device, where it is stored in the device's memory, not the webserver's memory.
• The webserver's memory is used to handle the request and generate the response, but it does not store the downloaded data.

Additional Information

• This statement 2 is correct. Uploading is the process of copying data from the user's device to the web server. For example, a user can upload a file to a web server by selecting the file from their device and using a form to submit the file to the server.
• This statement 3 is correct. During uploading, data travels from the user's device to the web server. The data is transmitted over the internet using protocols such as HTTP or FTP.
• This statement 4 is correct. Downloading is the process of copying files from the web server to the user's device. For example, a user can download a file from a web server by clicking a link or button on a webpage. The file is then copied from the web server to the user's device.

The correct answer is Alt + Tab.​Key Points

• Microsoft:-
  • It is s widely recognized for its operating systems such as Microsoft Windows and software applications like Microsoft Office suite (including Word, Excel, PowerPoint, etc.), Microsoft Edge web browser, and many other tools and services.
• Windows 10:-
  • It is a widely used operating system developed by Microsoft.
  • It is part of the Windows NT family of operating systems and serves as the successor to Windows 8.1
• Alt + Tab:- It is a shortcut for switching between open applications or windows in most operating systems.

Additional Information

• Here are some common keyboard shortcuts for Windows 10:
  • Shift + Tab:- to navigate backward through fields or elements, particularly in forms or dialog boxes.
  • Shift + Alt + Tab:- to navigate through open applications or windows in reverse order.
  • Alt + Shift:- to switch between keyboard input languages or keyboard layouts in many operating systems

The correct answer is Fedora.

Key Points

• Fedora is not a web browser, but rather a Linux-based operating system.
• A web browser is a software application used to access and view websites and web pages on the internet.
  • Some examples of web browsers include Google Chrome, Mozilla Firefox, Microsoft Edge, Apple Safari, and Opera.
  • Each of these browsers has its own features and user interface, but they all provide a way for users to interact with the internet and access web content.

The correct answer is Internet.

Key Points

• Internet is a global network of computers that enables communication and data exchange between them.
• It connects computers, servers, routers, and other devices across the world.
• Internet uses various communication protocols such as TCP/IP, HTTP, FTP, SMTP, etc. to ensure seamless data transfer between different types of computers and networks.
• With the help of Internet, users can access a wide range of services and applications such as email, social media, online shopping, video conferencing, cloud computing, and much more.
• Internet has revolutionized the way people communicate, work, learn, and entertain themselves.
• It has become an integral part of our daily lives.

Additional Information

• Pager is a wireless communication device that receives and displays messages, usually in the form of text.
  • It was popular in the 1990s but has become obsolete with the advent of smartphones and mobile internet.
• Post cards are a form of traditional mail that carries a short message or image on a small piece of paper or cardboard.
  • They are still used for personal and business correspondence, but their usage has declined due to the rise of email and instant messaging.
• Cable refers to a physical medium of transmitting data and signals, such as coaxial cable, fiber optic cable, or Ethernet cable.
  • It is used in various communication technologies such as cable TV, broadband internet, and LAN (Local Area Network).

Command is a directive to a computer program order to perform a specific task, In computing.
Hence, Option A is correct.

A gateway is a piece of networking hardware used in telecommunications for telecommunications networks that allows data to flow from one discrete network to another. Two different networks can be connected by using Gateway.
Hence, Option B is correct.

Optical Mark Reader or Optical Mark Recognition (OMR) is also known by its brand name ‘Scantron’.
It is an electronic method which acknowledges human-created marks on a specially printed paper or journal used in experiments, surveys, etc.
Hence, option D is the correct answer.

Spam is any kind of unwanted, unsolicited digital communication that gets sent out in bulk.
Often spam is sent via email, but it can also be distributed via text messages, phone calls, or social media.
Hence, option A is the correct answer.

Among the given options, ‘megabyte’ represents the smallest amount of data.

• 1 Nibble = 4 bits
• 1 byte = 8 bits
• 1 Kilobyte = 1024 Bytes
• 1 Megabyte = 1024 Kilobyte
• 1 Gigabyte = 1024 Megabyte
• 1 Terabyte = 1024 Gigabyte
• 1 Petabyte = 1024 Terabyte

Hence, option D is the correct answer.

The official name of the 9^th version of android is ‘Pie’.
Android OS is a Linux-based mobile operating system that primarily runs on smartphones and tablets.
Hence, option A is the correct answer.

In the context of computers, VLSI stands for Very Large-Scale Integration.
It is the process of creating an integrated circuit by combining millions or billions of MOS transistors onto a single chip.
Hence, option A is the correct answer.

In MS-Word, the keyboard shortcut ‘Ctrl + Shift + W’ is used to underline the text but not the spaces.
For example: This is an example sentence to show the above said formatting.
Hence, option C is the correct answer.

The Correct answer is One cell down.

Key Points

• In Microsoft Excel, the down arrow key leads to the One Cell down movement.
• Just like the down key, every arrow key performs the same function i.e. right arrow key when pressed leads to one cell's right movement, the left arrow key lead to one cell's left movement, etc.

Important Points

• MS Excel, a spreadsheet program, is widely used for varied functions, as a result, the info is simple to avoid wasting time, and data is accessible and removed with zero discomforts and less labour.
• Cells: MS Excel consists of rows and columns which form cells. The cells are formed by intersecting rows and columns. Each cell can hold text, numbers, special characters, and so on. The rows of MS Excel are named after numbers (e.g. 1,2,3,4...) and the columns are named with capital letters (e.g. A, B, C, D, ...). There are 16,384 columns and 10,48,576 rows in the MS Excel sheet. The very first cell of MS Excel is named A1.
• Grids: In MS Excel, the cells can be differentiated by the grid lines. The gridline of the cells can be modified as per the requirement. The size of the cells also can be adjusted by moving the gridlines.
• Worksheet: The worksheet is referred to as the working area of MS Excel. It is also named a spreadsheet. The worksheet in MS Excel is filled with cells. In the worksheet, the user can perform mathematical calculations, store data, and so on.
• Workbook: After storing the data in MS Excel, the user saves the file with a proper name. This file is referred to as a workbook. The workbook can hold at least one or many worksheets.

The correct answer is Ctrl + E.

• A Control key is a modifier key that, when pressed in conjunction with another key, performs a certain action.
• Ctrl + E is the short key to align selected text or line to the center In Microsoft Word and other word processors.

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• Ctrl + R -is the short key to align selected text or line to the right.
• Ctrl + M is the short key to Indent the paragraph.
• Ctrl+A is the short key to select all text or other objects present.
• Ctrl+B is the short key to bold highlighted text.
• Ctrl+C is the short key to copy any selected text or another object.
• Ctrl+F is the short key to open the find window.
• Ctrl+G is the short key to open Find in a browser and word processors.
• Ctrl+N is the short key to create a new page or document.
• Ctrl+O is the short key to open a file in most programs.
• Ctrl+P is the short key to open a print window to print the page you're viewing.
• Ctrl+J is the short key to view downloads in browsers and set justify alignment in Microsoft Word.
• Alt+C is a keyboard shortcut most often used to view the favorite in Internet Explorer.

The correct answer is Password.

Key Points

Here is a detailed explanation of how to encrypt a PowerPoint presentation with a password:

• Open the PowerPoint presentation that you want to encrypt.
• Click on the File tab.
• In the Info section, click on Protect Presentation.
• Click on Encrypt with Password.
• In the Password box, type a password that you want to use to protect the presentation.
• In the Confirm Password box, type the password again.
• Click on OK.
• The PowerPoint presentation will now be encrypted with the password that you entered. Only people who know the password will be able to open and view the presentation.

Additional Information

Here are some tips for creating a strong password:

• Use a combination of uppercase and lowercase letters, numbers, and symbols.
• The password should be at least 8 characters long.
• Avoid using personal information in your password, such as your name, birthday, or address.
• Do not use the same password for multiple accounts.
• If you forget the password to your PowerPoint presentation, you will not be able to open it. It is important to keep a record of your passwords in a safe place.

The correct answer is A collection of websites and web pages accessible over the internet.

Key Points

• World Wide Web:
  • The World Wide Web is a system of interlinked hypertext documents (websites and webpages) accessed via the Internet.
  • It was created by British computer scientist Tim Berners-Lee in 1989.
  • The World Wide Web has revolutionized the way people access and share information, leading to the rapid growth of the internet.
  • It allows users to navigate between websites and access multimedia content such as videos, images, and audio.
  • The World Wide Web is often abbreviated as "WWW" or simply "the web".
  • It is based on the use of hyperlinks, which allow users to easily move from one document to another.
  • The World Wide Web has become an essential tool for communication, commerce, and entertainment.
  • It has also raised concerns about privacy, security, and the spread of misinformation.
  • The World Wide Web Consortium (W3C) oversees the development of web standards and protocols.
  • The World Wide Web has had a profound impact on society, changing the way people access information and interact with each other.