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Solutions for Computer Applications, Class 10, CBSE
Gulzar is a talented musician. He is trying to create a web page so as to share his creations with music lovers across the world. He wants to embed audio and video files in the web page with the following specifications :
To embed audio files :
(i) The name of audio file is GulzarNote1.mp3
(ii) The audio should start playing automatically when the page loads.
(iii) The audio controls such as Play, Pause and Volume should be visible.
To embed video files :
(i) The name of video file is GulzarMovie1.mp4
(ii) The video should play in a window of width 350 pixels and height 250 pixels.
(iii) The video controls such as Play, Pause and Volume should be visible.
To complete the task, Gulzar has written the following HTML code :
To embed audio :
<audio controls autoplay>
<source src = "GulzarNote1.mp3">
</audio controls>To embed video :
<video width = "350" height = "250">
<source src = "GulzarMovie1.mp4">
</video>Gulzar is not getting the desired output as the code contains errors. Rewrite the correct statements to help him to complete the task. Underline all the corrections made.
Gulzar's HTML code for embedding audio and video has a few errors. The correct HTML code is as follows:
To embed audio :
<audio controls autoplay>
<source src = "GulzarNote1.mp3">
</audio>controls attribute should be written only in the opening audio tag and not in the closing audio tag.
To embed video :
<video width = "350" height = "250" controls>
<source src = "GulzarMovie1.mp4" type="video/mp4">
</video>Controls attribute has been added to the opening video tag and the type attribute has been added to source tag.
Differentiate between the terms Web Site and Web Page.
| Web Page | Website |
|---|---|
| A web page is a basic unit of every website. | A website is a collection of web pages, connected by links. |
| Each web page is identified by a unique web address called Uniform Resource Locator (URL) within a domain. | A website has all its web pages accessible via the same domain name. |
What is a Web Browser? Write the names of any two commonly used Web Browsers.
A web browser is essential software used for accessing websites and serves as an interface between users and the World Wide Web.
Two commonly used Web Browsers are:
Rohan is creating a Web page in HTML. He wants to insert a link in his Web page to appear with the text as "Click to Open" which on clicking should open the URL named 'http://www.Mywebsite.com' in a new window. Help him to write the HTML code to create the hyperlink.
<a href = "http://www.Mywebsite.com" target = "_blank">Click to Open</a>Write any two differences between the Outline and Border-style properties of CSS.
| Outline | Border-style |
|---|---|
| Outline attribute controls all the aspects of an element's outline. | Border-style is specifically used to choose the type of border for an element. |
| Outline attribute makes use of various properties like outline-color, outline-style, etc. to control the appearance of outline. | Border-style is a property of Border attribute which specifies the border type. |
Expand the following in the context of Internet Protocols :
(a) SMTP
(b) POP3
Write the difference between SMTP and POP3.
(a) SMTP — Simple Mail Transfer Protocol
(b) POP3 — Post Office Protocol Version 3
| SMTP | POP |
|---|---|
| SMTP (Simple Mail Transfer Protocol) protocol is used to send messages from a mail client to a mail server. | POP3 (Post office Protocol Version 3) helps to retrieve e-mails from a remote web server using a local client. |
What is e-Governance ? Explain any two merits of e-Governance.
e-Governance refers to the application of electronic means in governance with an aim of fulfilling the requirements of common man at affordable costs and in fastest possible time.
Two merits of e-Governance are:
Differentiate between a Web Address and an Email Address. Write an example of each to illustrate the difference.
| Web address | e-mail address |
|---|---|
A web address is the address of a webpage on the world wide web. A web address is written as type://address/path. | An e-mail address is the address of a mail box of an e-mail account holder. An e-mail address is written as username@hostname. |
For example, www.google.co.in,www.wikipedia.com, etc. | For example, raman23@gmail.com, hello@kboat.in, etc. |
Expand the terms SMS and MMS in the context of Mobile Technologies. Differentiate between SMS and MMS in the context of Mobile Technologies.
SMS — Short Message Service
MMS — Multimedia Messaging Service
| SMS | MMS |
|---|---|
| SMS does not support multimedia content and it allows to send only text messages of upto 160 characters. | MMS supports multimedia content and allows to send images and videos along with text. |
| SMS is cheaper. | MMS is more expensive. |
Read the case study given below and attempt any 4 sub-questions (out of 5). Each sub-question carries 1 mark.
Bidya is a nurse in XYZ hospital. Owing to the emergency situation due to COVID-19, she needs to communicate in almost real-time with the Medical Superintendent about the status of the patients. The hospital has provided her a laptop, web camera and other accessories for communication purposes.
(a) As instructed by the Medical Superintendent, Bidya has to send the RT-PCR reports of some patients who have tested negative to their respective family members using her laptop. Which web service should she avail ?
(b) Bidya wants to establish a connection with the remote computer of pathology lab in the city, so that she can see the RT-PCR reports of her patients. Which protocol will be used for the same ?
(c) Bidya has also been instructed by the Medical Superintendent to upload the RT-PCR reports in the Hospitals Data Server. Which Internet protocol shall be used during this process of uploading the reports into the Hospital's Server ?
(d) The Medical Superintendent has asked Bidya to inform about the billing and payment details of the admitted patients. Bidya needs to securely access the details from the Hospital's server using her Admin Login Credentials. Which secured network protocol is she using to access the account details for the patients ?
(e) Bidya, during her free time, likes to browse the Internet for products available for Online Shopping. Which Internet protocol does Bidya use while browsing for such products ?
(a) Bidya should avail an email service and attach the RT-PCR reports of patients, who have tested negative, to the e-mail and send them to their respective family members.
(b) Telnet Protocol.
(c) File Transfer Protocol (FTP).
(d) Secure SHell (SSH) protocol.
(e) Hypertext Transfer Protocol (HTTP) or its secured counterpart, Hypertext Transfer Protocol Secure (HTTPS).
Write the HTML code to design a Web page as shown below :
Consider the specifications as given below. Students can write the code for any 4 specifications out of the given 5 specifications.
Specification-1 : Use CSS to set the following for the entire body :
Specification-2 : The value of the table border attribute should be 1. Table header tag should be used wherever required.
Specification-3 : The table should exactly contain 4 rows and 4 columns. The data in each cell should be as shown in the above table.
Specification-4 : Attribute rowspan should be used wherever required.
Specification-5 : Attribute colspan should be used wherever required.
<HTML>
<HEAD>
<STYLE type = "text/css">
body {
color: Tomato;
background-color: LightBlue;
font-family: Helvetica;
}
</STYLE>
</HEAD>
<BODY>
<TABLE BORDER = "1" CELLSPACING = "3">
<TR>
<TH> Roll No. </TH>
<TH> Name </TH>
<TH> Marks </TH>
<TH> Class Average </TH>
</TR>
<TR>
<TD> 1 </TD>
<TD> Amit </TD>
<TD> 95 </TD>
<TD ROWSPAN = "3"> 95.5 </TD>
</TR>
<TR>
<TD> 2 </TD>
<TD> Angel </TD>
<TD> 96 </TD>
</TR>
<TR>
<TD COLSPAN = "3"> Teacher Mr. Hamid </TD>
</TR>
</TABLE>
</BODY>
</HTML>