Delhi Police Constable · Topic Collection

Computer Knowledge PYQs

Computer fundamentals — hardware, software, MS Office, internet, networking, and cybersecurity awareness asked in computer knowledge sections.

1030 Total Questions103 Official PapersYears: 2020–2026Search in Computer Knowledge
Showing questions 861–880 of 1030Page 44 of 52
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 861

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Every computer connected to the internet needs an IP address. What is the full form of IP? 

  1. AOption (a)

    International Partner

  2. BOption (b)

    Internet Protocol

  3. COption (c)

    Internal Protocol 

  4. DOption (d)

    Internet Partner

View answer & explanation

Correct answer

Answer: (b)B.

Internet Protocol

Why this answer is correct

The correct answer is Internet Protocol.

Key Points

  • Internet Protocol (IP) is a set of rules that govern how data packets are sent, received, and addressed across networks. It acts as the backbone for communication on the internet.
  • Every device connected to the internet, including computers, smartphones, and IoT devices, is assigned a unique IP address, which serves as its identification for communication purposes.
  • The IP is responsible for ensuring that data packets are routed to the correct destination, facilitating seamless communication between devices regardless of their geographical locations.
  • There are primarily two versions of IP in use today: IPv4 (Internet Protocol version 4) and IPv6 (Internet Protocol version 6). IPv6 was introduced to address the shortage of IP addresses under IPv4.
  • The IP works in conjunction with other protocols such as TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) to provide reliable data transmission.

Additional Information

  • IP Address:
  • An IP address is a numerical label assigned to each device connected to a network that uses the Internet Protocol for communication.
  • It serves two main purposes: host identification and location addressing.
  • Example formats include IPv4 (e.g., 192.168.1.1) and IPv6 (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).
  • IPv4 vs IPv6:
  • IPv4 uses a 32-bit address scheme, allowing for around 4.3 billion unique addresses.
  • IPv6, introduced in 1998, utilizes a 128-bit address scheme, which significantly expands the number of available addresses.
  • IPv6 also offers enhanced security, simplified routing, and better support for modern devices and applications.
  • Role of IP in Networking:
  • IP is critical for the functioning of the Internet, enabling communication between networks and devices worldwide.
  • It works alongside DNS (Domain Name System), which translates domain names into IP addresses for easier access.
  • It is a fundamental protocol in the TCP/IP model, which is the foundation of modern networking.
  • Applications of Internet Protocol:
  • IP is used in web browsing, email communication, file sharing, and streaming services.
  • It is essential for cloud computing, enabling data transfer and connectivity between remote servers and users.
  • It supports emerging technologies such as the Internet of Things (IoT), facilitating seamless communication between devices.

Important Points

  • Development of Internet Protocol:
  • The Internet Protocol was first defined in RFC 791, which was published in 1981.
  • It was developed by Vint Cerf and Bob Kahn, who are often referred to as the "fathers of the Internet."
  • Security Concerns:
  • While IP facilitates communication, it is susceptible to cyber threats such as IP spoofing and denial-of-service (DoS) attacks.
  • Organizations implement firewalls and encryption protocols to mitigate these risks.
  • Future Developments:
  • The transition from IPv4 to IPv6 is ongoing, with IPv6 expected to become the standard due to its scalability and efficiency.
  • Research is being conducted to improve IP's performance in supporting 5G networks and advanced technologies.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 862

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

______ represent a standard set of expressions in an email.

  1. AOption (a)

    Emoticons

  2. BOption (b)

    Images

  3. COption (c)

    Animations

  4. DOption (d)

    Texts

View answer & explanation

Correct answer

Answer: (a)A.

Emoticons

Why this answer is correct

The correct answer is Emoticons.

Key Points

  • Emoticons are a standard set of expressions commonly used in emails to convey emotions, moods, and feelings in a non-verbal manner.
  • They consist of text-based symbols or characters that mimic facial expressions, such as :-) for a smile, or :-( for sadness.
  • The term "emoticon" is derived from the words "emotion" and "icon", highlighting their purpose of visually expressing emotions.
  • Emoticons are widely employed in both personal and professional emails to add a personal touch, clarify tone, or lighten the mood of the communication.
  • In professional settings, the use of emoticons is generally kept subtle, such as using a smiley face (:-)) to convey friendliness or positivity.

Additional Information

  • Characteristics of Emoticons:
  • Emoticons are typically crafted using ASCII characters or other text symbols.
  • They are universal and can be recognized across different languages and cultures.
  • Examples include :-D for laughter, ;) for a wink, and :P for playful teasing.
  • Difference Between Emoticons and Emojis:
  • Emoticons are text-based, while emojis are graphical representations.
  • Emojis are often more detailed and colorful, such as 😊 (smiling face) or 😢 (crying face).
  • Emojis are supported by most modern devices and platforms, whereas emoticons are universally compatible with text-based interfaces.
  • Uses of Emoticons in Communication:
  • Enhance written communication by providing emotional context.
  • Help reduce misunderstandings by clarifying the tone of the message.
  • Improve engagement and strengthen interpersonal connections, especially in informal settings.
  • Historical Perspective:
  • The first use of emoticons is attributed to Scott Fahlman in 1982, when he suggested using :-) and :-( to distinguish jokes from serious statements in online forums.
  • Since then, emoticons have become a global phenomenon in digital communication.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 863

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following statements is/are true?

(i) In MS Word, the default alignment of text is 'left'.

(ii) In MS Word, every paragraph ends with a paragraph mark, which looks like a backward P (¶).

  1. AOption (a)

    Neither i nor ii

  2. BOption (b)

    Both i and ii

  3. COption (c)

    Only i

  4. DOption (d)

    Only ii

View answer & explanation

Correct answer

Answer: (b)B.

Both i and ii

Why this answer is correct

The correct answer is Both i and ii.

Key Points

  • Statement i: In MS Word, the default alignment for text is left alignment. This means that when you start typing in a new document, the text automatically aligns to the left margin unless manually changed. Hence, statement i is correct.
  • Statement ii: In MS Word, every paragraph ends with a paragraph mark (¶), which is a non-printable formatting character. This mark indicates the end of a paragraph and appears when the "Show/Hide" option is enabled in the toolbar. Hence, statement ii is correct.
  • Both statements accurately describe default features and formatting in Microsoft Word, emphasizing its user-friendly interface for text editing and formatting.
  • These features are important for users to understand the behavior of text alignment and paragraph formatting in Word documents.
  • Thus, the correct answer is Both i and ii.

Additional Information

  • Text Alignment in MS Word:
  • Microsoft Word offers four main text alignment options: Left, Center, Right, and Justify.
  • Left alignment is the default setting, aligning text with the left margin while leaving the right margin uneven.
  • Center alignment is used to position text symmetrically between the left and right margins, commonly for headings.
  • Right alignment aligns text to the right margin, often used for dates or addresses.
  • Justify alignment adjusts spacing to align text evenly along both left and right margins, creating a clean block of text.
  • Paragraph Mark (¶) in MS Word:
  • The paragraph mark (¶) is a non-printable character used for formatting purposes.
  • It indicates where a paragraph ends and contains information about paragraph formatting like line spacing, indentation, and alignment.
  • The paragraph mark becomes visible when the "Show/Hide" button (¶) in the toolbar is enabled.
  • It is useful for troubleshooting formatting issues or working with complex layouts.
  • Other Formatting Symbols in MS Word:
  • Space (·): Each space in a document is represented by a dot when "Show/Hide" is enabled.
  • Tab (→): Tabs are displayed as right-facing arrows.
  • Line Break (↵): Line breaks are shown as bent arrows indicating manual breaks within a paragraph.
  • Applications of MS Word:
  • Widely used for document creation, including resumes, reports, and letters.
  • Includes advanced features like tables, graphs, and mail merge for professional formatting and data management.
  • Supports integration with other Microsoft Office tools like Excel and PowerPoint for seamless workflow.

Important Points

  • Shortcut Keys in MS Word:
  • Ctrl + L: Align text to the left margin.
  • Ctrl + E: Center align text.
  • Ctrl + R: Align text to the right margin.
  • Ctrl + J: Justify text alignment.
  • *Ctrl + Shift + : Toggle the visibility of formatting marks (paragraph marks, spaces, tabs, etc.).
  • Versions of MS Word:
  • First released in 1983, MS Word has become one of the most popular word processors globally.
  • Latest versions include Microsoft Word 2021, which is part of the Microsoft Office suite.
  • Available on multiple platforms like Windows, macOS, and mobile devices.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 864

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

In MS Word, there is a font size dropdown box. What is the largest font size that can be selected from it?

  1. AOption (a)

    64

  2. BOption (b)

    72

  3. COption (c)

    96

  4. DOption (d)

    32

View answer & explanation

Correct answer

Answer: (b)B.

72

Why this answer is correct

The correct answer is 72.

Key Points

  • The largest font size that can be selected from the dropdown box in MS Word is 72. This is the maximum predefined font size available in the dropdown list.
  • Users can select font sizes smaller than or equal to 72 directly from the dropdown list for ease of formatting text.
  • Although the dropdown menu is limited to 72, users can manually input larger font sizes (e.g., 96 or 100) into the font size field, if required.
  • The font size option in MS Word allows customization of text appearance, making it suitable for headings, subheadings, and body text formatting.
  • This feature is a part of the formatting toolbar in MS Word, which provides quick access to commonly used text formatting options like font style, color, and alignment.

Additional Information

  • Font Size in MS Word:
  • The font size refers to the height of text characters and is measured in points. One point equals approximately 1/72 of an inch.
  • The font size dropdown in MS Word typically shows sizes ranging from 8 to 72 points by default.
  • For larger text, users can type a custom font size into the font size box, extending beyond the default dropdown options.
  • Custom Font Sizes:
  • To apply a font size larger than 72, users can manually enter a value, such as 96 or 120, into the font size field in the toolbar.
  • Custom font sizes are useful in scenarios like creating banners, posters, or presentations.
  • Formatting Toolbar:
  • The formatting toolbar in MS Word includes options for font style, size, bold, italic, underline, text color, and more.
  • Font size is a crucial component of document design, ensuring readability and aesthetic appeal.
  • Use Cases of Large Font Sizes:
  • Large font sizes, such as 72 or more, are commonly used for titles, headings, and emphasized text in documents and presentations.
  • They are also utilized in creative projects like posters, advertisements, or event invitations to grab the reader’s attention.
  • Other Features in MS Word:
  • MS Word offers a range of formatting options, including text alignment, spacing, and indentation, which can complement font size adjustments.
  • Users can also customize text appearance with advanced features like WordArt, Themes, and Styles for a professional look.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 865

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following can be used to create a new line inside the cell of an MS Excel worksheet?

  1. AOption (a)

    Down arrow

  2. BOption (b)

    Ctrl + Enter

  3. COption (c)

    Enter

  4. DOption (d)

    Alt + Enter

View answer & explanation

Correct answer

Answer: (d)D.

Alt + Enter

Why this answer is correct

The correct answer is Alt + Enter.

Key Points

  • Alt + Enter is used to create a new line within a single cell in an MS Excel worksheet. It allows users to insert line breaks for better organization and readability of data.
  • This feature is especially useful when you want to format text within a cell, such as entering an address or separating items into multiple lines without using multiple cells.
  • To use this shortcut, position the cursor within the cell where you want the line break and press Alt + Enter. The text will move to a new line within the same cell.
  • Unlike the Enter key, which moves the cursor to a new cell, Alt + Enter keeps the content within the same cell, making it ideal for multiline cell entries.
  • This shortcut works in both Microsoft Excel and other spreadsheet tools with similar functionality, provided they support the feature.

Additional Information

  • Other Important Excel Shortcuts:
  • Ctrl + Enter: This shortcut fills the selected range of cells with the current entry without moving the active cell. It does not create a new line within a cell.
  • Enter: Moves the active cell to the next cell below and does not allow multiline text within a single cell.
  • Down Arrow: Moves the cursor to the cell below without editing the current cell.
  • Applications of Alt + Enter:
  • Creating multiline addresses in a single cell for clear readability.
  • Using line breaks to format comments or notes within a cell.
  • Improving the visual presentation of data when working with long text entries.
  • Features of MS Excel:
  • MS Excel is a powerful spreadsheet tool developed by Microsoft as part of its Office Suite.
  • It allows for data analysis, visualization, and organization through features like formulas, charts, and pivot tables.
  • The software supports multiple keyboard shortcuts, such as Alt + Enter, to enhance user productivity.
  • Important Notes:
  • When using Alt + Enter, the row height automatically adjusts to fit the multiline content in the cell.
  • Users can manually adjust the column width to ensure that the text is displayed properly within the cell.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 866

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following keyboard shortcuts is used to reset the zoom feature within the Chrome browser to its default setting?

  1. AOption (a)

    CTRL + D

  2. BOption (b)

    CTRL + 9

  3. COption (c)

    CTRL + R

  4. DOption (d)

    CTRL + 0

View answer & explanation

Correct answer

Answer: (d)D.

CTRL + 0

Why this answer is correct

The correct answer is CTRL + 0.

Key Points

  • The keyboard shortcut CTRL + 0 is used to reset the zoom level in the Chrome browser to its default setting, which is typically 100%.
  • This shortcut is a standard feature in most modern web browsers, including Google Chrome, Mozilla Firefox, and Microsoft Edge.
  • When you press CTRL + 0, the zoom level of the current web page is immediately restored to its original state, making it easier for users who have unintentionally zoomed in or out.
  • Zooming adjustments can also be done manually through the browser settings, but the shortcut provides a quick and convenient method.
  • The feature is particularly useful for improving readability and ensuring that the webpage layout appears as designed.

Additional Information

  • Other Common Browser Shortcuts:
  • CTRL + D: This shortcut is used to bookmark the current webpage in the browser.
  • CTRL + R: This shortcut reloads the current page, refreshing its content.
  • CTRL + 9: This shortcut switches to the last tab in the browser window if multiple tabs are open.
  • Zoom Feature in Browsers:
  • The zoom feature allows users to increase or decrease the size of text, images, and other elements on a webpage.
  • The zoom level can typically be adjusted in increments of 10% using shortcuts like CTRL + "+" (Zoom In) and CTRL + "-" (Zoom Out).
  • Resetting the zoom (using CTRL + 0) ensures that the webpage is displayed as intended, without distortion or layout issues.
  • Accessibility Features:
  • Browser zoom and related shortcuts are essential for accessibility purposes, allowing individuals with visual impairments to adjust the display according to their needs.
  • Additional tools like screen readers and high-contrast modes can further enhance accessibility in modern browsers.
  • Cross-Browser Compatibility:
  • Most major browsers, including Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari, support the CTRL + 0 shortcut for resetting zoom levels.
  • This consistency ensures that users can rely on familiar shortcuts regardless of their browser choice.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 867

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

What is the result of the following MS Excel formula? =SUM(4^3, 2-2/2)

  1. AOption (a)

    82

  2. BOption (b)

    64

  3. COption (c)

    63

  4. DOption (d)

    65

View answer & explanation

Correct answer

Answer: (d)D.

65

Why this answer is correct

The correct answer is Option 4.

Key Points

  • The given formula in MS Excel is: =SUM(4^3, 2-2/2).
  • Step 1: The calculation for 4^3 (4 raised to the power of 3) results in 64.
  • Step 2: The calculation for 2 - 2/2 is performed using the BODMAS rule:
  • Division first: 2/2 = 1.
  • Subtraction: 2 - 1 = 1.
  • Step 3: Applying the SUM function: Add 64 (from Step 1) and 1 (from Step 2). This results in 65.
  • Hence, the correct answer is Option 4 (65).

Additional Information

  • SUM Function in MS Excel:
  • The SUM function is a mathematical formula used to add numbers, cell references, or ranges of data.
  • It can handle multiple arguments and automatically adds them together.
  • Example: =SUM(1, 2, 3) will return 6.
  • Exponentiation in MS Excel:
  • Exponentiation is performed using the caret symbol (^).
  • Example: 4^3 calculates 4 raised to the power of 3, which is 64.
  • This feature is widely used in mathematical and statistical calculations.
  • BODMAS Rule:
  • The BODMAS rule stands for Brackets, Orders, Division, Multiplication, Addition, and Subtraction.
  • It specifies the order in which mathematical operations should be performed to ensure accurate results.
  • Example: For 2-2/2, division is performed first (2/2 = 1), followed by subtraction (2-1 = 1).
  • Applications of MS Excel:
  • MS Excel is widely used for data analysis, financial modeling, statistical calculations, and more.
  • Functions like SUM, AVERAGE, IF, VLOOKUP, and COUNT simplify complex operations.
  • Excel also supports advanced formulas and operations, including macros and pivot tables, for enhanced productivity.

Important Points

  • Handling Errors in Excel Formulas:
  • Excel formulas may return errors like #DIV/0! (division by zero) or #VALUE! (invalid data type).
  • To troubleshoot, verify the formula syntax and ensure valid inputs.
  • Shortcut for SUM Function:
  • The shortcut for applying the SUM function is Alt + = (Windows) or Command + Shift + T (Mac).
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 868

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

What will happen when you select any middle cell of a table in MS Word document and press Shift + Tab key?

  1. AOption (a)

    The content of the cell which is next (right) to the current cell will be selected. 

  2. BOption (b)

    The content of the cell which is previous (left) to the current cell will be selected.

  3. COption (c)

    The content of the cell which is below the current cell will be selected. 

  4. DOption (d)

    The content of the current cell will be deleted.

View answer & explanation

Correct answer

Answer: (b)B.

The content of the cell which is previous (left) to the current cell will be selected.

Why this answer is correct

The correct answer is The content of the cell which is previous (left) to the current cell will be selected.

Key Points

  • Shift + Tab is a keyboard shortcut used in MS Word to navigate to the previous (left) cell in a table.
  • When you are working inside a table in MS Word, pressing Shift + Tab moves the cursor or selection focus to the cell located immediately to the left of the current cell.
  • This command ensures quick navigation within the table, specifically for users who need to work in reverse direction or correct data in previous cells.
  • It does not delete any content or select cells in other directions like right, below, or above. Hence, statement 4 is incorrect.
  • Similarly, it does not select the cell to the right or below, emphasizing its primary function to navigate to the previous cell.

Additional Information

  • Keyboard Shortcuts in MS Word Tables:
  • Tab: Moves the cursor to the next (right) cell in the table.
  • Shift + Tab: Moves the cursor to the previous (left) cell in the table.
  • Arrow Keys: Navigate between cells (up, down, left, or right).
  • Enter: Adds a new line within the same cell if there’s sufficient space.
  • Table Navigation in MS Word:
  • Tables in MS Word are designed for structured data representation.
  • Efficient navigation using shortcuts like Shift + Tab ensures smoother data entry and correction workflows.
  • Shortcuts help users minimize dependency on a mouse, improving productivity in large tables.
  • Custom Table Functions:
  • Split Cells: Allows dividing a single cell into multiple rows or columns.
  • Merge Cells: Combines multiple cells into one larger cell.
  • Cell Formatting: Enables text alignment, background color, and border customization for better table aesthetics.
  • Applications of MS Word Tables:
  • Used in reports, resumes, forms, and project documentation for structured layouts.
  • Commonly applied in academic and professional settings for organizing numerical or textual data.
  • Supports insertion of images and graphs into cells for enhanced presentation.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 869

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

What will be the address of a cell which lies at the intersection of the seventh row and tenth column in an MS Excel worksheet?

  1. AOption (a)

    $J7$

  2. BOption (b)

    7J

  3. COption (c)

    G10

  4. DOption (d)

    J7

View answer & explanation

Correct answer

Answer: (d)D.

J7

Why this answer is correct

The correct answer is J7.

Key Points

  • In Microsoft Excel, each cell in a worksheet is identified by a unique address that is a combination of a column letter and a row number.
  • The columns in Excel are labeled alphabetically (A, B, C, ..., Z, AA, AB, etc.), while the rows are numbered sequentially starting from 1.
  • The cell address at the intersection of the seventh row and tenth column in an Excel worksheet is J7.
  • The column letter for the tenth column is J, as the alphabetical sequence of columns progresses from A to J.
  • When combined with the row number 7, the cell address becomes J7.

Additional Information

  • Cell Address in Excel:
  • Every cell in Excel is identified using a unique address, which is a combination of its column letter and row number (e.g., A1, B2).
  • The columns are labeled alphabetically (A to Z, then AA to AZ, BA to BZ, etc.), and rows are numbered numerically starting from 1.
  • For example, the cell in the second column and third row will have an address B3.
  • Excel Column and Row Details:
  • Microsoft Excel provides up to 16,384 columns, which are labeled from A to XFD.
  • It supports up to 1,048,576 rows, numbered from 1 to 1,048,576.
  • This vast range allows Excel to store and organize large datasets.
  • Importance of Cell Address:
  • A cell address is used to refer to a specific location in the worksheet where data can be entered or retrieved.
  • It is crucial for performing calculations, referencing data, and creating formulas or functions.
  • For example, the formula =SUM(A1:A10) adds all values in cells from A1 to A10.
  • Excel Applications:
  • Excel is widely used for data analysis, financial modeling, charting, and creating reports.
  • Its ability to handle large datasets makes it a vital tool in data management and business analysis.
  • Functions like VLOOKUP, HLOOKUP, PivotTables, and conditional formatting enhance its usability for various tasks.
Delhi Police Constable Official Paper (Held On: 03 Dec, 2020 Shift 3) (Previous Year Paper)·Computer Awareness
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Question 870

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following features is used to type very small letters or numbers just below the line of text?

  1. AOption (a)

    Strikethrough

  2. BOption (b)

    Subscript

  3. COption (c)

    Superscript

  4. DOption (d)

    Formal painter

View answer & explanation

Correct answer

Answer: (b)B.

Subscript

Why this answer is correct

The correct answer is Subscript.

Key Points

  • Subscript is a formatting feature used in text processing software, such as Microsoft Word, Google Docs, or LaTeX, to type small letters or numbers just below the baseline of regular text.
  • This feature is commonly used in mathematical formulas, chemical equations, and footnotes. For example, in the chemical formula H2O, the number "2" is written as a subscript.
  • Subscript text is smaller and positioned lower than the normal text line, making it visually distinct.
  • It is a crucial tool for representing scientific notations, such as atomic numbers, isotopes, and other technical details requiring precise positioning.
  • This feature is different from superscript, which positions text or numbers above the baseline of regular text.

Additional Information

  • Strikethrough:
  • This feature is used to draw a line through the middle of text, indicating that it is no longer valid or relevant.
  • It is commonly used in editing or reviewing documents to mark sections for deletion.
  • Strikethrough does not affect the positioning of text like subscript or superscript.
  • Superscript:
  • Superscript positions text or numbers above the baseline of regular text.
  • It is commonly used for exponential notations (e.g., x2) and ordinal indicators (e.g., 1st, 2nd).
  • In chemical notations, superscripts can represent charges on ions, such as Na+ or Cl-.
  • Formal Painter:
  • This tool is used to copy and apply text formatting styles from one section of a document to another.
  • It does not directly relate to positioning text, such as subscript or superscript.
  • Applications of Subscript:
  • Used extensively in scientific disciplines, such as chemistry, physics, and biology.
  • Applicable in mathematical matrix representations or indexing (e.g., aij).
  • Helpful in software programming for array indexing and database notations.

Important Points

  • Difference Between Subscript and Superscript:
  • Subscript is positioned below the baseline, whereas superscript is positioned above the baseline.
  • Subscript is used for chemical formulas and indexing, while superscript is used for exponential notations and charges.
  • Software Support:
  • Features like subscript and superscript are supported by popular document editors, such as Microsoft Word, Google Docs, LaTeX, and others.
  • Keyboard shortcuts, such as Ctrl + = (for subscript) and Ctrl + Shift + = (for superscript), can be used in some applications.
  • Scientific Importance:
  • Subscript plays a vital role in accurately conveying scientific and technical information.
  • It ensures clarity and prevents misinterpretation in equations, formulas, and notations.
Delhi Police Constable Official Paper (Held On: 08 Dec, 2020 Shift 1) (Previous Year Paper)·Computer Awareness
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Question 871

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following keyboard shortcuts is used to view the source code of a web page in Chrome browser?

  1. AOption (a)

    CTRL + S 

  2. BOption (b)

    ALT + U 

  3. COption (c)

    ALT + S 

  4. DOption (d)

    CTRL + U 

View answer & explanation

Correct answer

Answer: (d)D.

CTRL + U 

Why this answer is correct

The correct answer is CTRL + U.

Key Points

  • The shortcut CTRL + U is used in the Google Chrome browser to view the source code of a web page.
  • By pressing CTRL + U, a new tab opens displaying the HTML and other source code of the web page being viewed.
  • This feature is commonly used by web developers to inspect or analyze the structure and content of a webpage.
  • CTRL + U works across multiple browsers such as Mozilla Firefox, apart from Chrome, making it a universal shortcut for accessing source code.
  • The source code reveals the HTML, CSS, JavaScript, and other elements used to create the webpage, which can be copied or analyzed for learning or debugging purposes.

Additional Information

  • Other useful shortcuts in Chrome:
  • CTRL + S: This shortcut is used to save the webpage being viewed as an HTML file for offline use.
  • CTRL + SHIFT + I: Opens the Developer Tools, which include tools for debugging, inspecting elements, and testing website responsiveness.
  • CTRL + SHIFT + C: Allows users to inspect elements on the page directly by hovering over them.
  • Understanding source code:
  • Source code refers to the underlying code written by developers to create a webpage. It includes languages such as HTML, CSS, and JavaScript.
  • HTML provides the structure of the webpage, CSS determines its appearance, and JavaScript adds dynamic functionality.
  • Applications of viewing source code:
  • Web developers use the source code to debug errors, analyze competitor websites, or learn coding techniques.
  • Students or learners of web development analyze source code to understand the structure and design of professional websites.
  • Browser compatibility:
  • The CTRL + U shortcut works on multiple browsers like Google Chrome, Mozilla Firefox, and Microsoft Edge, making it a standard tool for developers.
  • For Safari on macOS, the equivalent is Command + Option + U.

Important Points

  • To enable viewing source code, ensure that browser settings allow developer options.
  • Viewing source code does not allow users to edit the live webpage but provides a static view of its underlying code.
  • Some websites may have restrictions in place to disable right-click or shortcuts like CTRL + U, but these can often be bypassed using developer tools.
  • Source code analysis is a powerful learning tool, but copying code without permission may violate intellectual property laws.
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Question 872

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

After selecting the B5 cell in an MS Excel worksheet, how many cells will be selected if the 'Shift' key is pressed and then the G9 cell is clicked?

  1. AOption (a)

    12 

  2. BOption (b)

    30 

  3. COption (c)

    11 

  4. DOption (d)

    10 

View answer & explanation

Correct answer

Answer: (b)B.

30 

Why this answer is correct

The correct answer is Option 2 (30 cells).

Key Points

  • When the Shift key is pressed in an MS Excel worksheet and another cell (e.g., G9) is clicked, all the cells between the initially selected cell (B5) and the clicked cell (G9) are selected. This includes both the starting and ending cells.
  • The range of cells selected in this case spans from B5 to G9, which forms a rectangular block of cells.
  • To calculate the total number of cells in the selected range:
  • The range B5 to G9 spans:
  • Columns: B, C, D, E, F, and G (6 columns).
  • Rows: 5, 6, 7, 8, and 9 (5 rows).
  • Total number of cells = Number of rows × Number of columns.
  • Calculation: 6 columns × 5 rows = 30 cells.
  • Option 2 (30 cells) is the correct answer because it correctly accounts for the rectangular range of cells selected.
  • Other options are incorrect because they do not match the total number of cells in the selected range.

Additional Information

  • Cell Selection in MS Excel:
  • Cell selection is a basic operation in MS Excel that allows users to work on a specific range of data.
  • When selecting a range using the Shift key, Excel highlights all cells between the initial selection and the clicked cell.
  • Rectangular Range:
  • A range in Excel can be rectangular, covering multiple rows and columns, as in the example of B5 to G9.
  • The range is inclusive of the starting and ending cells.
  • Row and Column Indexing:
  • Rows are indexed numerically (e.g., 1, 2, 3, etc.), while columns are indexed alphabetically (e.g., A, B, C, etc.).
  • This indexing helps determine the dimensions of a selected range.
  • Practical Applications:
  • Selecting ranges is useful for applying formatting, functions, or data manipulation across multiple cells simultaneously.
  • For example, users can format the range, input formulas, or create charts based on selected data.

Important Points

  • Shortcut Keys for Selection:
  • Pressing Shift along with arrow keys allows incremental selection of cells.
  • Ctrl + Shift + Arrow key selects all cells in the direction of the arrow until an empty cell is encountered.
  • Range References in Formulas:
  • Ranges can be referenced in Excel formulas using the syntax StartCell:EndCell (e.g., B5:G9).
  • This is commonly used in functions like SUM, AVERAGE, and COUNT.
  • Visual Cues:
  • Excel highlights selected cells to provide a visual indication of the range being worked on.
  • The first cell in the selection is the anchor point, and all other cells are selected relative to it.
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Question 873

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following statements is false regarding MS Word?

  1. AOption (a)

    A document file can contain more than one paragraph.

  2. BOption (b)

    A document file cannot have both a header and a footer.

  3. COption (c)

    A document file can contain more than one bulleted text.

  4. DOption (d)

    A document file can contain more than one table.

View answer & explanation

Correct answer

Answer: (b)B.

A document file cannot have both a header and a footer.

Why this answer is correct

The correct answer is 2) A document file cannot have both a header and a footer..

Key Points

  • Statement 1: A document file can contain more than one paragraph.

  • This is correct. In Microsoft Word, users can create and format multiple paragraphs within a single document. It supports paragraph spacing, alignment, and text formatting.

  • Statement 2: A document file cannot have both a header and a footer.

  • This is incorrect. Microsoft Word allows users to insert both a header and a footer in the same document. The header appears at the top margin, while the footer appears at the bottom margin of every page.

  • Statement 3: A document file can contain more than one bulleted text.

  • This is correct. Microsoft Word supports multiple bulleted lists in a document, allowing users to organize content effectively.

  • Statement 4: A document file can contain more than one table.

  • This is correct. Microsoft Word allows users to insert multiple tables within a single document. Tables can be formatted, resized, and positioned independently.

Additional Information

  • Headers and Footers in MS Word:
  • Headers appear at the top margin of each page and can include text, images, page numbers, or date and time.
  • Footers appear at the bottom margin of each page and are often used for page numbers, copyright information, or document titles.
  • Users can format headers and footers differently for odd, even, and first pages.
  • Paragraph Formatting in MS Word:
  • Microsoft Word offers options like alignment (left, right, center, justified), line spacing, and paragraph spacing.
  • Users can also use indentation and bullets/numbering for better content presentation.
  • Tables in MS Word:
  • Tables are used to organize data in rows and columns.
  • Word provides tools to merge cells, insert/delete rows and columns, and apply styles for better appearance.
  • Multiple tables can be added to a single document, each with unique formatting and data.
  • Bulleted and Numbered Lists:
  • Bulleted lists are used to display unordered items, while numbered lists are for ordered sequences.
  • Users can customize bullet styles and numbering formats as per their needs.

Important Points

  • Applications of Headers and Footers:
  • Used in professional documents like reports, books, and research papers.
  • Enhance document readability and provide consistent information across pages.
  • Advanced Features in MS Word:
  • Styles and Themes: Allow users to apply consistent formatting throughout the document.
  • References and Citations: Useful for academic and research purposes.
  • Track Changes: Helps in collaborative editing by showing edits and comments.
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Question 874

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

What is the default name of the first worksheet in an MS Excel workbook? 

  1. AOption (a)

    WSheet1

  2. BOption (b)

    Worksheet1

  3. COption (c)

    WS1

  4. DOption (d)

    Sheet1

View answer & explanation

Correct answer

Answer: (d)D.

Sheet1

Why this answer is correct

The correct answer is Sheet1.

Key Points

  • The default name of the first worksheet in an MS Excel workbook is Sheet1. When you create a new workbook, Excel automatically names the first worksheet as Sheet1.
  • The naming convention follows a sequential pattern: Sheet1, Sheet2, Sheet3, etc., for subsequent worksheets added to the workbook.
  • Users can rename the worksheet by double-clicking on the worksheet tab and entering a new name. This allows customization based on the content of the sheet.
  • The default naming structure is used to maintain consistency and avoid confusion during the initial creation of worksheets.
  • This default behavior is consistent across all versions of Microsoft Excel, including Excel 2007, 2010, 2013, 2016, 2019, and Microsoft 365.

Additional Information

  • Worksheet in Excel:
  • A worksheet is a single spreadsheet in an Excel workbook. It consists of rows and columns where data can be entered and manipulated.
  • Each worksheet has a unique name (e.g., Sheet1, SalesData, etc.), which helps in identifying the data stored within it.
  • A workbook can contain multiple worksheets, and users can switch between them using the worksheet tabs at the bottom.
  • Default Settings in MS Excel:
  • In a new workbook, Excel provides one worksheet by default, named Sheet1. However, users can change this default setting to include more worksheets.
  • To customize the default number of worksheets, navigate to File > Options > General, and adjust the settings in the "When creating new workbooks" section.
  • Renaming Worksheets:
  • Renaming a worksheet can be done by double-clicking on the worksheet tab or right-clicking and selecting the "Rename" option.
  • Using meaningful names for worksheets, such as Inventory or Budget, helps in organizing data better.
  • Tab Color Customization:
  • Excel allows users to apply different colors to worksheet tabs for better visual distinction. To do this, right-click the tab and select "Tab Color".
  • This feature is particularly useful when working with a workbook containing a large number of sheets.
  • Versions and Compatibility:
  • The naming convention (Sheet1, Sheet2, etc.) has been consistent in all versions of MS Excel, ensuring ease of use for all users.
  • Excel files created in one version can be opened in another, and the default worksheet names remain unchanged unless manually altered.

Important Points

  • Excel Workbook: A workbook is a file in Excel that can contain one or more worksheets. It serves as the primary document format for storing and organizing data.
  • Worksheet Limit: The maximum number of worksheets in a workbook depends on system memory, but Excel can accommodate a large number of sheets.
  • Keyboard Shortcut: To insert a new worksheet, use the shortcut Shift + F11.
  • Hidden Worksheets: Worksheets can be hidden to declutter the workbook. To hide or unhide, right-click on the worksheet tab and select the appropriate option.
  • Protected Sheets: Worksheets can be password-protected to prevent unauthorized changes. This can be done under the Review tab.
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Question 875

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following keyboard shortcuts is used to go to the end of an MS Word document? 

  1. AOption (a)

    Alt + D

  2. BOption (b)

    Ctrl + D

  3. COption (c)

    Ctrl + End 

  4. DOption (d)

    Alt + End 

View answer & explanation

Correct answer

Answer: (c)C.

Ctrl + End 

Why this answer is correct

The correct answer is Ctrl + End.

Key Points

  • Ctrl + End is the keyboard shortcut used to move the cursor to the end of the document in MS Word. This is the correct answer.
  • The End key by itself moves the cursor to the end of the current line, but combining it with Ctrl moves the cursor to the end of the entire document.
  • This shortcut works effectively in both long and short documents and is a quick way to navigate to the last section of the document.
  • Other shortcuts like Alt + D, Ctrl + D, and Alt + End have different functions in MS Word and do not serve the purpose of moving to the end of the document. Hence, they are incorrect.
  • Keyboard shortcuts such as Ctrl + End are widely used in document editing software to save time and enhance productivity.

Additional Information

  • Ctrl + End Shortcut:
  • This shortcut is applicable in most document-editing and word-processing tools, including MS Word, Google Docs, and similar software.
  • It helps users quickly navigate large documents without the need to scroll manually.
  • It is especially useful in scenarios where users need to add content or review the final section of a document.
  • Alt + D Shortcut:
  • In MS Word, Alt + D does not have a direct function related to navigation within the document.
  • This shortcut is often used in browsers to focus on the address bar but does not apply here. Hence, this option is incorrect.
  • Ctrl + D Shortcut:
  • Ctrl + D in MS Word is used for opening the Font dialog box, allowing users to modify font styles, sizes, and other text-related attributes.
  • It does not serve the purpose of moving to the end of the document. Hence, this option is incorrect.
  • Alt + End Shortcut:
  • Alt + End does not perform any significant navigation function in MS Word related to reaching the end of the document.
  • Its functionality is limited or non-existent in most common applications for document editing, and thus, this option is incorrect.

Important Points

  • Navigation Shortcuts: Efficient navigation shortcuts like Ctrl + End, Ctrl + Home, Ctrl + Arrow keys, and others significantly enhance user productivity in document editing.
  • Customization: Users can customize shortcuts in MS Word through the Options menu for personalized workflows.
  • Application Scope: While these shortcuts are primarily for MS Word, many of them work in other Microsoft Office programs and general text editors like Notepad.
  • Keyboard Accessibility: Familiarity with shortcuts improves accessibility for users who rely on keyboards over mouse navigation.
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Question 876

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

What is the full form of W3C?

  1. AOption (a)

    World Wide Web Consortium

  2. BOption (b)

    World Wide Web Consolidation 

  3. COption (c)

    World Wise Web Consortium

  4. DOption (d)

    World Wise Web Consolidation 

View answer & explanation

Correct answer

Answer: (a)A.

World Wide Web Consortium

Why this answer is correct

The correct answer is World Wide Web Consortium.

Key Points

  • The World Wide Web Consortium (W3C) is an international community that develops open standards to ensure the long-term growth and interoperability of the Web.
  • It was founded by Tim Berners-Lee in 1994 and is headquartered at the Massachusetts Institute of Technology (MIT), USA.
  • The W3C focuses on creating standards for the Web such as HTML, CSS, XML, and accessibility guidelines to make the web usable for everyone, including individuals with disabilities.
  • The consortium consists of member organizations, a full-time staff, and the public, all working together to develop protocols and guidelines.
  • Its main goal is to ensure that the Web remains open, accessible, and interoperable, enabling seamless communication and innovation across different platforms and devices.

Additional Information

  • Founding History:
  • The W3C was established by Tim Berners-Lee, the inventor of the World Wide Web, to guide the development of the Web and its standards.
  • Its creation was based on the need for a neutral organization to prevent fragmentation and ensure the Web's growth.
  • Structure:
  • The consortium is hosted by MIT (USA), ERCIM (France), and Keio University (Japan).
  • The W3C operates through its Working Groups, which draft and refine web standards such as HTML and CSS.
  • Achievements:
  • Major contributions include the development of HTML5, which introduced robust multimedia capabilities for the Web.
  • It also promotes web accessibility through the Web Accessibility Initiative (WAI), ensuring websites are usable for people with disabilities.
  • Global Impact:
  • The W3C has over 400 member organizations, including tech giants like Google, Apple, Microsoft, and IBM.
  • Its standards are universally adopted, creating a cohesive and consistent web experience across platforms and regions.

Important Points

  • Key Standards:
  • HTML: HyperText Markup Language, used to structure content on the web.
  • CSS: Cascading Style Sheets, used to style and design websites.
  • XML: Extensible Markup Language, used to store and transport data.
  • WCAG: Web Content Accessibility Guidelines, ensuring accessibility for people with disabilities.
  • Accessibility:
  • The W3C's Web Accessibility Initiative (WAI) ensures that websites and applications are accessible to all, including those with visual, auditory, or cognitive impairments.
  • It provides guidelines and tools like WCAG to help developers create inclusive digital experiences.
  • Membership:
  • The W3C includes academic institutions, private companies, and government organizations.
  • Members collaborate on standards that shape the future of the Web.
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Question 877

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

What will be the result of the following MS Excel formula?

=32/2^4/2

  1. AOption (a)

    0

  2. BOption (b)

    32768 

  3. COption (c)

    8

  4. DOption (d)

    1 

View answer & explanation

Correct answer

Answer: (d)D.

1 

Why this answer is correct

The correct answer is 1.

Key Points

  • The formula in the question is: =32/2^4/2. This requires following the BODMAS rule (Brackets, Orders, Division, Multiplication, Addition, Subtraction).
  • Step 1: Evaluate the exponentiation (Orders). In this case, 2^4 = 16.
  • Step 2: Perform the first division: 32/16 = 2.
  • Step 3: Perform the next division: 2/2 = 1.
  • Hence, the final result of the formula is 1.
  • Thus, the correct answer is 1.

Additional Information

  • BODMAS Rule:
  • The BODMAS rule is a mathematical principle used for solving expressions systematically. The order is: Brackets, Orders, Division, Multiplication, Addition, Subtraction.
  • This ensures that calculations are performed correctly, particularly for complex expressions.
  • Exponentiation:
  • Exponentiation refers to raising a number to the power of another number. For example, 2^4 means multiplying 2 by itself 4 times, which equals 16.
  • It is a key operation in the "Orders" step of the BODMAS rule.
  • Division:
  • Division is performed from left to right when it appears in a formula, as per the BODMAS rule.
  • In the given formula, 32/2^4/2, the calculation proceeds left to right: 32/16 = 2 and then 2/2 = 1.
  • Common Errors:
  • Many people make the mistake of not following the BODMAS rule, which can lead to incorrect results.
  • For example, if exponentiation is ignored or division is not performed sequentially, the result may deviate from the correct answer.
  • Applications:
  • Understanding the BODMAS rule is crucial in fields like mathematics, computer programming, engineering, and financial calculations.
  • It ensures consistency and accuracy in solving equations and formulas.
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Question 878

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

The '.docx' file extension was first introduced in which of the following?

  1. AOption (a)

    MS Word 2010 

  2. BOption (b)

    MS Word 2013 

  3. COption (c)

    MS Word 2007 

  4. DOption (d)

    MS Word 2016 

View answer & explanation

Correct answer

Answer: (c)C.

MS Word 2007 

Why this answer is correct

The correct answer is MS Word 2007.

Key Points

  • The .docx file extension was introduced with Microsoft Word 2007 as part of the Office Open XML format.
  • Prior to the introduction of .docx, Microsoft Word used the .doc format as its default file extension for Word documents.
  • The Office Open XML format (.docx) was developed to improve compatibility, reduce file size, and enhance security by using XML-based structures.
  • The introduction of .docx marked a significant change in the way files were stored, making them more efficient and easier to integrate with other systems and platforms.
  • Microsoft Word 2007 was officially released to the public on January 30, 2007, as part of the Microsoft Office 2007 suite.

Additional Information

  • Office Open XML Format:
  • The Office Open XML format was standardized by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC).
  • It uses ZIP compression to reduce file sizes compared to the older .doc format.
  • The format separates content, styles, and metadata into distinct XML files within the .docx container.
  • This ensures better compatibility with other software and makes files easier to repair in case of corruption.
  • Microsoft Word 2010:
  • Microsoft Word 2010 continued to use the .docx format as its default, building upon the features introduced in Word 2007.
  • It introduced new features like the Backstage view and enhanced collaboration tools.
  • Microsoft Word 2013:
  • Word 2013 further improved on the .docx format by adding features like cloud integration through OneDrive.
  • It introduced touch-friendly capabilities and better compatibility with mobile devices.
  • Microsoft Word 2016:
  • Word 2016 retained the .docx format while emphasizing collaborative editing and real-time co-authoring.
  • It included improved tools for research and citation management.
  • Advantages of .docx Format:
  • Files created in .docx are smaller due to ZIP compression.
  • It allows for easier integration with other applications and systems because of its XML-based structure.
  • The format provides better security and recovery options compared to the older .doc format.

Important Points

  • Backward Compatibility: Microsoft ensured that documents in the .docx format could be opened in older versions of Word using compatibility packs.
  • File Conversion: Users can easily convert .docx files to other formats like PDF, .doc, and .odt using built-in tools in Microsoft Word.
  • Global Adoption: The .docx format has become a standard across organizations and industries due to its efficiency and compatibility.
  • Other Applications: Many third-party applications, such as Google Docs and LibreOffice, also support .docx files, making it a universally accepted format.
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Question 879

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

State whether the following statements are true or false.

(i) In MS Word, a paragraph can be underlined with double lines.

(ii) In MS Word, a paragraph can contain only one sentence.

  1. AOption (a)

    (i) True, (ii) False

  2. BOption (b)

    (i) False, (ii) True

  3. COption (c)

    (i) False, (ii) False

  4. DOption (d)

    (i) True, (ii) True

View answer & explanation

Correct answer

Answer: (d)D.

(i) True, (ii) True

Why this answer is correct

The correct answer is Option 4.

Key Points

  • Statement (i): In MS Word, a paragraph can be underlined with double lines:
  • MS Word provides extensive formatting options for text and paragraphs, including the ability to underline text with single or double lines.
  • To apply double underline formatting, you can select text or paragraphs, go to the "Font" group on the "Home" tab, and choose the double underline option from the "Underline style" dropdown menu.
  • This feature is often used for emphasis or professional document formatting.
  • Hence, this statement is correct.
  • Statement (ii): In MS Word, a paragraph can contain only one sentence:
  • A paragraph in MS Word is defined as a block of text ending with a paragraph mark (created by pressing "Enter").
  • It can contain one sentence, multiple sentences, or even a single word. There is no restriction on the number of sentences in a paragraph.
  • This flexibility allows users to structure content according to their needs, such as bullet points, headings, or descriptive paragraphs.
  • Hence, this statement is correct.
  • Both statements are correct, making Option 4 the correct answer.

Additional Information

  • Formatting Options in MS Word:
  • MS Word offers various formatting styles, including bold, italics, underline (single and double), strikethrough, and more.
  • Additional options like text color, font size, and font type help users customize documents effectively.
  • Paragraph formatting tools include alignment (left, center, right, justify), line spacing, indentation, and borders.
  • Paragraphs in MS Word:
  • A paragraph is created by pressing the "Enter" key, which inserts a paragraph mark.
  • Paragraph marks can be made visible using the "Show/Hide" button in the "Home" tab.
  • Paragraphs can be structured in various styles, including bullet points, numbered lists, or normal text blocks.
  • Customizing Underlines:
  • Users can customize underline styles by selecting "More Underline Options" in the "Font" dialog box.
  • Options include color, thickness, and style (e.g., dotted, dashed, wave-like patterns).
  • Uses of Paragraph Formatting:
  • Well-structured paragraphs improve readability and organization in documents.
  • Paragraph alignment and spacing are crucial for professional document presentation.
  • These tools are particularly useful in creating resumes, reports, and research papers.

Important Points

  • Key Features of MS Word:
  • MS Word is a widely used word processor developed by Microsoft.
  • It allows users to create, edit, format, and print documents efficiently.
  • Popular features include spelling and grammar checking, templates, and collaboration tools.
  • MS Word Versions:
  • Over the years, MS Word has evolved significantly, with major versions like Word 2003, Word 2007, Word 2010, Word 2016, and Word 365.
  • Each version introduced new features, such as cloud integration and advanced formatting tools.
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Question 880

Delhi Police Constable 2020• Computer Awareness• Computer Awareness

Which of the following statements is true about e-mail?

  1. AOption (a)

    Email attachments cannot contain both PDF and ZIP files.

  2. BOption (b)

    The 'CC' field in the e-mail can be left blank.

  3. COption (c)

    The 'To' field in the email cannot be empty.

  4. DOption (d)

    Emails cannot contain more than five attachments.

View answer & explanation

Correct answer

Answer: (b)B.

The 'CC' field in the e-mail can be left blank.

Why this answer is correct

The correct answer is The 'CC' field in the e-mail can be left blank.

Key Points

  • The 'CC' field in the e-mail can be left blank: The "CC" (Carbon Copy) field is optional in email communication. It is used to send a copy of the email to other recipients without being the primary recipient. Leaving this field blank does not affect the functionality of the email. Hence, this statement is correct.
  • The 'To' field in the email cannot be empty: This field is mandatory as it specifies the primary recipient of the email. Without a recipient email address in the "To" field, the email cannot be sent. Hence, this statement is correct.
  • Email attachments cannot contain both PDF and ZIP files: This is incorrect. Emails can contain multiple types of attachments, including PDFs and ZIP files. Email services and protocols do not restrict the combination of file types in attachments. Hence, this statement is incorrect.
  • Emails cannot contain more than five attachments: This is incorrect. Most email services allow multiple attachments, and the limit is usually determined by the total size of the attachments rather than the number of files. Hence, this statement is incorrect.

Additional Information

  • Email Structure:
  • To: This field is used to specify the primary recipient(s) of the email.
  • CC: Stands for Carbon Copy, allowing the sender to send a copy of the email to other recipients. Recipients in the CC field are visible to all other recipients.
  • BCC: Stands for Blind Carbon Copy, enabling the sender to send a copy of the email without disclosing the recipients to others.
  • Email Attachments:
  • Attachments can include documents, images, videos, and compressed files (like ZIP).
  • Attachment limits depend on the email service provider. For example, Gmail allows attachments up to 25 MB.
    • SMTP (Simple Mail Transfer Protocol): Used for sending emails.
  • IMAP (Internet Message Access Protocol): Allows users to access emails on a server.
  • POP3 (Post Office Protocol): Downloads emails from the server to the local device.
    • Leaving the "To" field blank results in an error preventing the email from being sent.
  • Exceeding attachment size limits can cause delivery failure.

Important Points

  • Popular email services include Gmail, Outlook, Yahoo Mail, and ProtonMail.
    • Attachments should be scanned for malware or viruses.
  • Emails should be encrypted using protocols like SSL/TLS for secure communication.
    • Use clear and concise subject lines.
  • Avoid sending large attachments; use cloud storage links if needed.
  • Double-check recipient addresses to avoid miscommunication.

How should I prepare for Computer Knowledge in Delhi Police Constable?

Solving previous year questions by topic helps identify recurring concepts, question patterns, and frequently asked sub-topics. Attempt each question, review the step-by-step explanation, and note down key formulas or facts for quick revision before the exam.