List of top Computer Applications Questions asked in CBSE Class X

What is the difference between a Web Server and a Web Browser?
Explain Phishing and suggest two precautions to take during E-commerce transactions.
List four essential Netiquettes every "netizen" should follow.
Define Plagiarism and list two ways a student can avoid it while using internet resources.
What is the role of a Search Engine, and how does it differ from a Web Portal?
Differentiate between a Web Address (URL) and an Email Address with examples.
Define Cloud Computing and provide two examples.
Explain the purpose of protocols such as HTTP, HTTPS, FTP, and SMTP.
I. Write the HTML code to embed a video file named documentary.mp4 into a webpage. The video should have a width of 400 pixels and a height of 300 pixels. It should display playback controls.
II. Which attribute of the <font> tag is used to specify the font family?
Write the complete HTML code to design a webpage with the following specifications:

(I) The title of the webpage should be "Healthy Living".
(II) Background color of the page should be "LightGreen".
(III) The main heading "Benefits of Yoga" should be in color "Blue".
(IV) The paragraph describing yoga (as shown above) with font size "5".
(V) An unordered list listing three benefits: "Flexibility", "Strength", "Peace".
Write the HTML code to display the following statements on a webpage:
I. The chemical formula for Sulfuric Acid is H2SO4.
II. The Pythagorean theorem is a2 + b2 = c2.
III. The coordinates are represented as (X1, Y1).
Write the HTML code to create a table with 2 rows and 2 columns and a border of 2. The first row should be the table header containing Roll No and Name, and the second row should contain the values 1 and Rahul respectively.
Write the complete HTML code to design a "Feedback Form" as shown here, according to the specifications given below:

I. Background Color: The page background should be "Pink".
II. Heading: "Customer Feedback" in the largest heading tag, center-aligned.
III. Form Elements:
  • Name: A Text box to accept the user's name.
  • Service Rating: Two Radio buttons with labels "Good" and "Bad".
  • City: A List box, showing four city names.
Write the HTML code snippet to create an Ordered List of the top three winners of a competition. However, the list should start numbering from '4' instead of '1'. List items are as shown below:
(4. Rahul, 5. Sneha, 6. Amit)
How can we create a hyperlink that directly opens the user's email client to send an email to "info@school.com"? Write the syntax.
Explain the purpose of the style attribute in HTML. Write an HTML statement to set the font color of a paragraph to "red" using inline CSS.
What is e-Governance? Give one example of an e-Governance website in India.
With reference to mobile technologies, briefly explain the following:
I. SMS
II. 3G
III. 5G
Ravi is trying to make an online payment on an e-commerce website. He sees that the website's URL starts with "http". Should he continue with the payment? Give reasons to support your answer.
The following HTML statements contain errors. Rewrite the correct statements for each. 
I.   <a src="page2.html">Next Page</a>
II.  <img href="flower.jpg" alt="Rose">
III. <ul type="A"><li>Item 1</li></ul>
Write the HTML code to embed an audio file named song.mp3 into a webpage. Ensure that the audio plays automatically.
Assertion (A): SMTP is used by the receiver to download emails from the mail server.
Reason (R): POP3 is a protocol designed for retrieving emails from a remote server to a local client.
Explain the purpose of the vlink and alink attributes used within the <body> tag.
A school is developing a digital learning platform where students can submit projects and communicate with teachers online. The school wants to ensure that the system is efficient, reliable, and secure for sending and receiving files. A student is required to send an electronic project report as an email attachment to the teacher.
Based on the given scenario, answer the following questions:
a. Identify the protocol used for sending emails and justify your answer with one appropriate reason.
b. Explain one possible problem that could occur if an unsuitable or insecure protocol is used, and suggest one measure the school can implement to ensure secure email communication.
What is the significance of the alt attribute in the <img> tag? Provide one scenario where it is useful.