COMPUTER QUESTIONS AND ANSWERS
CLASS – VII
Q:
What is computer security?
A:
Computer security is the practice of protecting computer systems and data from
unauthorized access, damage, or theft.
Q:
What is a virus in the context of computer security?
A:
A virus is a type of malware that can replicate and infect computer files and
programs.
Q:
How can you protect your computer from viruses?
A:
Install and regularly update antivirus software.
Q:
What is a firewall in computer security?
A:
A firewall is a network security system that monitors and controls incoming and
outgoing network traffic.
Q:
Why is it important to have strong and unique passwords?
A:
Strong and unique passwords help protect your accounts from unauthorized
access.
Q:
What is two-factor authentication (2FA)?
A:
2FA is a security process in which a user provides two different authentication
factors to verify their identity.
Q:
What is phishing in computer security?
A:
Phishing is a fraudulent attempt to obtain sensitive information, often through
deceptive emails or websites.
Q:
What is malware?
A:
Malware is malicious software designed to harm or exploit computer systems and
their users.
Q:
How can you prevent malware infections?
A:
Install reputable antivirus software, regularly update your operating system,
and be cautious about downloading files or clicking on links.
Q:
What is a data breach?
A:
A data breach is an incident where unauthorized individuals gain access to
sensitive or confidential data.
Q:
What is encryption in computer security?
A:
Encryption is the process of converting data into a code to prevent
unauthorized access.
Q:
What is a backup in computer security?
A:
A backup is a copy of your data stored in a separate location, ensuring data
recovery in case of loss or damage.
Q:
What is a software update?
A:
A software update is a release by developers that includes patches, fixes, and
improvements to enhance software security.
Q:
What is a password manager?
A:
A password manager is a tool that securely stores and manages passwords for
various accounts.
Q:
What is a secure website connection?
A:
A secure website connection is indicated by "https://" in the web
address and ensures that data exchanged between your browser and the website is
encrypted.
Q:
What is a computer virus signature?
A:
A virus signature is a unique pattern that antivirus software uses to identify
and remove known viruses.
Q:
What is the role of user awareness in computer security?
A:
User awareness involves educating individuals about computer security best practices
to prevent common threats.
Q:
What is ransomware?
A:
Ransomware is a type of malware that encrypts the victim's data and demands a
ransom for the decryption key.
Q:
What is a cyber attack?
A:
A cyber attack is an intentional and malicious action taken against computer
systems, networks, or data.
Q:
How can you safely download and install software?
A:
Download software from reputable sources and verify its authenticity, and only
install software from trusted publishers.
Q:
What is a digital certificate in computer security?
A:
A digital certificate is a digital ID used to verify the authenticity of a
website or organization.
Q:
What is social engineering in computer security?
A:
Social engineering is the manipulation of individuals to reveal confidential
information or perform actions that are not in their best interest.
Q:
What is a security patch?
A:
A security patch is a software update that addresses known vulnerabilities and
security flaws.
Q:
What is a computer worm?
A:
A computer worm is a type of malware that can replicate itself and spread
without user interaction.
Q:
What is identity theft?
A:
Identity theft is a crime involving the theft of personal information for
fraudulent purposes, such as financial gain.
Q:
What is a denial-of-service (DoS) attack?
A:
A DoS attack is an attempt to make a computer or network unavailable to its
intended users by overwhelming it with excessive traffic.
Q:
What are security best practices for public Wi-Fi networks?
A:
Avoid conducting sensitive transactions or sharing personal information on
public Wi-Fi networks.
Q:
What is a security audit?
A:
A security audit is a systematic evaluation of a company's information system
by assessing its security policies and practices.
Q:
What is a hacker?
A:
A hacker is an individual with advanced computer skills who may use them for
legitimate or illegitimate purposes.
Q:
What is biometric authentication?
A:
Biometric authentication uses unique biological traits, such as fingerprints or
retinal scans, to verify a person's identity.
Q:
What is a security incident response plan?
A:
A security incident response plan outlines the actions to be taken in case of a
security breach or incident.
Q:
What is a firewall rule?
A:
A firewall rule is a set of criteria that controls the incoming and outgoing
network traffic.
Q:
What is a VPN (Virtual Private Network)?
A:
A VPN is a technology that provides a secure and encrypted connection over a
public network, such as the internet.
Q:
What is a strong passphrase?
A:
A strong passphrase is a combination of letters, numbers, and special
characters that is difficult to guess.
Q:
What is a software vulnerability?
A:
A software vulnerability is a flaw or weakness in software that can be
exploited by attackers.
Q:
What is a security token?
A:
A security token is a physical or digital device that generates one-time
passwords for authentication.
Q:
What is the role of access control in computer security?
A:
Access control restricts and manages access to certain resources, data, or
areas based on user permissions.
Q:
What is the principle of least privilege (PoLP)?
A:
The principle of least privilege means giving individuals or systems the
minimum access necessary to perform their tasks.
Q:
What is a password policy?
A:
A password policy is a set of rules and requirements for creating, managing,
and using passwords.
Q:
What is end-to-end encryption?
A:
End-to-end encryption ensures that data is only accessible to the sender and
recipient, with no intermediaries able to decrypt it.
Q:
What is the role of encryption keys in data security?
A:
Encryption keys are used to encrypt and decrypt data, making it secure and
private.
Q:
What is the importance of regular data backups?
A:
Regular data backups ensure that you can recover your data in case of loss or a
security incident.
Q:
What is a security policy in an organization?
A:
A security policy is a set of guidelines and rules that govern an
organization's approach to security.
Q:
What is a virus scan in computer security?
A:
A virus scan is the process of using antivirus software to search for and
remove malware from a computer.
Q:
What is a security breach notification?
A:
A security breach notification is a communication to individuals or authorities
when a data breach occurs.
Q:
What is a password manager in computer security?
A:
A password manager is a software tool that securely stores and manages all your
passwords.
Q:
What is a cyber threat?
A:
A cyber threat is a potential danger to computer systems, networks, or data.
Q:
How can you detect and avoid email phishing attempts?
A:
Be cautious of unsolicited emails, verify the sender's identity, and avoid
clicking on suspicious links.
Q:
What is network security?
A:
Network security involves protecting the integrity and availability of data and
resources in a computer network.
Q:
What is social media security?
A:
Social media security involves protecting your personal information and
interactions on social networking platforms.
Q:
What is HTML?
A:
HTML stands for Hypertext Markup Language. It's a standard language used to
create web pages.
Q:
What is a web page?
A:
A web page is a document that can be displayed in a web browser. It contains
text, images, and links to other web pages.
Q:
What is an HTML tag?
A:
An HTML tag is a code used to define the structure and content of a web page.
Tags are enclosed in angle brackets, like <tag>.
Q:
How do you create a basic HTML document?
A:
You start with an opening <html> tag, followed by <head> and
<body> sections.
Q:
What is the <head> section of an HTML document used for?
A:
The <head> section contains metadata about the web page, such as the
title and links to external resources like stylesheets and scripts.
Q:
What is the purpose of the <title> tag in HTML?
A:
The <title> tag defines the title of the web page, which is displayed in
the browser's title bar or tab.
Q:
How do you add a line break in HTML?
A:
You can add a line break using the <br> tag.
Q:
What is an HTML attribute?
A:
An HTML attribute provides additional information about an element. Attributes
are added to the opening tag and are often used for styling or specifying
behavior.
Q:
How do you create a hyperlink in HTML?
A:
You can create a hyperlink using the <a> tag with the href attribute to
specify the destination URL.
Q:
What is the role of the <img> tag in HTML?
A:
The <img> tag is used to embed images in a web page.
Q:
What is a list in HTML?
A:
A list is a way to display information in an organized manner. HTML supports
ordered lists (<ol>), unordered lists (<ul>), and definition lists
(<dl>).
Q:
What is a paragraph in HTML?
A:
A paragraph is a block of text separated by line breaks and identified by a
paragraph mark. It is created using the <p> tag.
Q:
What is the <div> tag in HTML used for?
A:
The <div> tag is used to group and style content within a web page. It
acts as a container.
Q:
What is a comment in HTML?
A:
A comment is text that is not displayed in the browser but is included in the
HTML code. It is enclosed in <!-- and -->.
Q:
How do you create a table in HTML?
A:
You can create a table using the <table> tag, with rows defined by
<tr> tags and columns by <td> (table data) or <th> (table
header) tags.
Q:
How can you add a background color to an HTML element?
A:
You can use the style attribute to set the background-color property for an
HTML element.
Q:
What is an HTML form used for?
A:
An HTML form is used to collect user input, such as text, checkboxes, and radio
buttons, which can be submitted to a web server.
Q:
What is an HTML form input element?
A:
An HTML form input element allows users to input data. Examples include text
boxes, radio buttons, and checkboxes.
Q:
What is a hyperlink action button in HTML?
A:
A hyperlink action button is a pre-designed shape that can be added to a web
page to link to other pages or external resources.
Q:
How can you create a drop-down menu in an HTML form?
A:
You can create a drop-down menu using the <select> tag with
<option> tags to define the choices.
Q:
What is the role of the <label> tag in HTML forms?
A:
The <label> tag is used to provide a label or description for form
elements like text inputs and checkboxes.
Q:
How do you create a radio button in an HTML form?
A:
Radio buttons are created using the <input> tag with the type attribute
set to "radio."
Q:
What is the <textarea> tag in HTML used for?
A:
The <textarea> tag is used to create a multiline text input field within
a form.
Q:
How do you create a checkbox in an HTML form?
A:
Checkboxes are created using the <input> tag with the type attribute set
to "checkbox."
Q:
What is the <meta> tag in the <head> section of an HTML document
used for?
A:
The <meta> tag provides metadata about the web page, such as character
encoding and author information.
Q:
What is the purpose of the <span> tag in HTML?
A:
The <span> tag is used to apply inline styling or markup to specific
portions of text.
Q:
How can you add a background image to an HTML element?
A:
You can use the style attribute and set the background-image property to
specify a background image.
Q:
What is a hyperlink target attribute in HTML?
A:
The target attribute in the <a> tag is used to specify where the linked
page should open, such as in the same window or a new window/tab.
Q:
What is an HTML comment used for?
A:
An HTML comment is used to add notes or explanations within the code that are
not displayed in the browser.
Q:
What is the purpose of the <iframe> tag in HTML?
A:
The <iframe> tag is used to embed external web content, such as videos or
other websites, within a web page.
Q:
How can you create a numbered list in HTML?
A:
You can create a numbered list using the <ol> (ordered list) tag with
<li> (list item) tags for each item.
Q:
What is the difference between an HTML class and an ID?
A:
A class is a way to group multiple elements for styling, while an ID is used to
uniquely identify a single element on a page.
Q:
How can you create a horizontal line in HTML?
A:
You can create a horizontal line using the <hr> tag.
Q:
What is the role of the <nav> element in HTML?
A:
The <nav> element is used to define navigation links or menus within a
web page.
Q:
What is the HTML code for a hyperlink that opens an email client?
A:
Use the <a> tag with the href attribute set to "mailto:" followed
by the email address.
Q:
What is semantic HTML?
A:
Semantic HTML uses elements with specific meanings to improve the structure and
accessibility of a web page.
Q:
What is the <header> element in HTML used for?
A:
The <header> element typically contains introductory content or a logo at
the top of a web page.
Q:
How do you create an HTML comment that spans multiple lines?
A:
You can create a multi-line comment by using <!-- to start the comment and
--> to end it, adding line breaks as needed within.
Q:
What is the <footer> element in HTML used for?
A:
The <footer> element is used to define the footer of a web page, often
containing copyright information or contact details.
Q:
How do you create an unordered list in HTML?
A:
You can create an unordered list using the <ul> (unordered list) tag with
<li> (list item) tags for each item.
Q:
What is the <section> element in HTML used for?
A:
The <section> element is used to group related content within a web page
and provide structural organization.
Q:
How do you create a definition list in HTML?
A:
You can create a definition list using the <dl> (definition list) tag
with pairs of <dt> (definition term) and <dd> (definition
description) tags.
Q:
What is the HTML <time> element used for?
A:
The <time> element is used to represent dates and times, making it easier
for search engines and assistive technologies to understand content.
Q:
How can you add a background color to a web page using CSS?
A:
You can set the background color of a web page using CSS by targeting the body
element and setting the background-color property.
Q:
What is the <article> element in HTML used for?
A:
The <article> element is used to mark content that is self-contained and
can be distributed or reused independently.
Q:
What is the purpose of the HTML <aside> element?
A:
The <aside> element is used for content that is tangentially related to
the main content, such as sidebars or advertisements.
Q:
How can you add an image with a caption in HTML?
A:
You can add an image with a caption by placing both the image and caption
within a <figure> element, and using a <figcaption> element for the
caption.
Q:
What is the <main> element in HTML used for?
A:
The <main> element is used to represent the main content of a web page
and should appear only once per page.
Q:
What is the HTML <mark> element used for?
A:
The <mark> element is used to highlight or mark specific text within a
document, often with a yellow background.
Q:
What is the <abbr> element in HTML used for?
A:
The <abbr> element is used to mark abbreviations or acronyms within the
text, helping users understand their meaning.
Q:
What is Adobe Photoshop?
A:
Adobe Photoshop is a popular software used for image editing and manipulation.
Q:
What is an image file format?
A:
An image file format is the way an image is saved, and it can affect image
quality and compatibility.
Q:
What is the difference between raster and vector images?
A:
Raster images are made up of pixels and are suitable for photographs, while
vector images use mathematical equations for graphics and are resizable without
loss of quality.
Q:
How can you open an image in Adobe Photoshop?
A:
You can open an image in Photoshop by selecting "File" and then
"Open" and choosing the image file.
Q:
What is the purpose of the "Crop" tool in Photoshop?
A:
The "Crop" tool is used to trim or resize an image to a specific size
or aspect ratio.
Q:
How can you adjust the brightness and contrast of an image in Photoshop?
A:
You can use the "Brightness/Contrast" adjustment to modify the
image's brightness and contrast.
Q:
What is the "Brush" tool used for in Photoshop?
A:
The "Brush" tool is used for painting or drawing on an image with
various brush styles and settings.
Q:
What is a layer in Photoshop?
A:
A layer is a separate level where you can add and edit different elements of an
image, such as text or graphics.
Q:
How do you add text to an image in Photoshop?
A:
You can add text to an image by selecting the "Type" tool and
clicking on the image to create a text layer.
Q:
What is the "Magic Wand" tool used for in Photoshop?
A:
The "Magic Wand" tool is used to select and edit a specific area of
an image based on color or similarity.
Q:
What is the purpose of the "Eraser" tool in Photoshop?
A:
The "Eraser" tool is used to remove portions of an image or a layer.
Q:
How can you change the color of an object in an image using Photoshop?
A:
You can change the color of an object in an image using tools like "Color
Replacement" or "Hue/Saturation."
Q:
What is the "Clone Stamp" tool in Photoshop?
A:
The "Clone Stamp" tool allows you to duplicate a part of an image and
paint it over another area to retouch or repair an image.
Q:
How can you add a filter effect to an image in Photoshop?
A:
You can apply filter effects to an image using the "Filter" menu,
which offers various options like blurring, sharpening, or stylizing the image.
Q:
What is the "Layers" panel in Photoshop used for?
A:
The "Layers" panel allows you to view, select, and manage all the
layers in your image.
Q:
What is the purpose of the "Dodge" and "Burn" tools in
Photoshop?
A:
The "Dodge" tool is used to lighten specific areas of an image, while
the "Burn" tool darkens areas.
Q:
What is the "Gradient" tool used for in Photoshop?
A:
The "Gradient" tool creates gradual color transitions or patterns in
an image.
Q:
How can you rotate or flip an image in Photoshop?
A:
You can use the "Image" menu to rotate or flip an image.
Q:
What is the "Save As" command used for in Photoshop?
A:
The "Save As" command allows you to save a copy of your image with a
different name or file format.
Q:
How can you undo an action in Photoshop?
A:
You can undo an action by selecting "Edit" and then "Undo"
or by using the keyboard shortcut Ctrl+Z (Windows) or Command+Z (Mac).
Q:
What is the "Selection" tool used for in Photoshop?
A:
The "Selection" tool allows you to choose and isolate specific areas
or objects in an image.
Q:
How can you add a border to an image in Photoshop?
A:
You can add a border to an image by creating a new layer, drawing a rectangle
around the image, and adjusting its properties.
Q:
What is the "Layers" menu used for in Photoshop?
A:
The "Layers" menu provides various options for managing and
organizing layers within an image.
Q:
How can you change the canvas size in Photoshop?
A:
You can change the canvas size by selecting "Image" and then
"Canvas Size" to make it larger or smaller.
Q:
What is the "Zoom" tool used for in Photoshop?
A:
The "Zoom" tool allows you to zoom in or out of an image for a closer
or wider view.
Q:
What is the "Layers Styles" feature in Photoshop?
A:
Layer Styles are effects you can apply to a layer to change its appearance,
including options like drop shadow, bevel, and inner glow.
Q:
How can you remove the background from an image in Photoshop?
A:
You can remove the background using various tools such as the "Magic
Wand," "Quick Selection," or "Pen Tool" to create a
selection and then delete or mask the background.
Q:
What is the "Blending Mode" in Photoshop?
A:
Blending Modes in Photoshop change how the content of one layer interacts with
the layers below it, altering the way colors and pixels combine.
Q:
How can you adjust the color and tone of an image in Photoshop?
A:
You can adjust color and tone using features like "Levels,"
"Curves," "Brightness/Contrast," or "Color
Balance" to fine-tune the image's appearance.
Q:
What is a layer mask in Photoshop?
A:
A layer mask is a grayscale image that determines the visibility of an
associated layer, allowing you to hide or reveal parts of the layer.
Q:
What is the "History" panel in Photoshop used for?
A:
The "History" panel allows you to undo and redo multiple actions in
your editing process, helping you track changes made to your image.
Q:
How can you resize an image in Photoshop without losing quality?
A:
To resize without losing quality, you can use the "Image Size" dialog
and ensure that the "Resample" option is set to "Bicubic
Sharper."
Q:
What is the "Free Transform" tool in Photoshop?
A:
The "Free Transform" tool lets you scale, rotate, skew, and warp a
layer or selection.
Q:
How can you save an image with a transparent background in Photoshop?
A:
To save an image with a transparent background, use a file format that supports
transparency, such as PNG or GIF.
Q:
What is the "Magic Wand" tool used for in Photoshop?
A:
The "Magic Wand" tool is used to select areas with similar colors or
tones, making it useful for quick selections.
Q:
What is a gradient in Photoshop?
A:
A gradient is a smooth transition between two or more colors. You can use
gradients for various effects in Photoshop.
Q:
How do you add a drop shadow to an object in Photoshop?
A:
You can add a drop shadow using layer styles. Right-click on the layer, select
"Blending Options," and enable the "Drop Shadow" effect.
Q:
What is the "Pen Tool" in Photoshop used for?
A:
The "Pen Tool" is used for creating precise paths and selections,
making it useful for tasks like cutting out objects or drawing shapes.
Q:
What is the "Clone Stamp" tool used for in Photoshop?
A:
The "Clone Stamp" tool is used to duplicate one area of an image and
paint it over another area, often for retouching.
Q:
How can you remove red-eye from a photo in Photoshop?
A:
You can remove red-eye by selecting the "Red Eye Tool" and clicking
on the red areas in the eyes.
Q:
What is the "Healing Brush" tool used for in Photoshop?
A:
The "Healing Brush" tool is used to fix imperfections in an image by
sampling pixels from one area and blending them into another.
Q:
What is the purpose of the "Gradient Overlay" layer style in
Photoshop?
A:
The "Gradient Overlay" layer style allows you to add a gradient fill
to a layer, creating a gradient effect on the object.
Q:
How can you straighten a crooked image in Photoshop?
A:
You can straighten a crooked image using the "Ruler Tool" to draw a
line along a straight element, then use the "Image" menu to select
"Image Rotation" and "Arbitrary."
Q:
What is the "Selective Color" adjustment in Photoshop used for?
A:
The "Selective Color" adjustment lets you adjust the color balance of
an image by tweaking the amounts of primary colors (red, green, blue, cyan,
magenta, yellow).
Q:
How do you create a reflection effect on an image in Photoshop?
A:
You can create a reflection effect by duplicating the image, flipping it
vertically, and applying a mask to blend it into the original image.
Q:
What is the "Saturate" command in Photoshop used for?
A:
The "Saturate" command is used to increase the vibrancy of colors in
an image.
Q:
How do you add a watermark to an image in Photoshop?
A:
You can add a watermark by creating a text or image layer and adjusting its
opacity and position on the image.
Q:
What is the "Curves" adjustment in Photoshop used for?
A:
The "Curves" adjustment is used to control the brightness and
contrast of an image by manipulating the tonal range.
Q:
What is the "Clipping Mask" in Photoshop?
A:
A clipping mask is a method to control the visibility of one layer based on the
content of another layer directly below it.
Q:
What is the "Paths" panel in Photoshop used for?
A:
The "Paths" panel is used for working with vector paths and shapes in
Photoshop, enabling precise selections and image adjustments.
