Python & MySQL: COMPUTER APPLICATION SAMPLE PAPER (CLASS

CLASS - X SESSION: 2020-21

Computer Application (Code 165)

Sample Question Paper (Theory)

M.M.: 50 Time Allowed: 2 Hrs.

General Instructions:

1. This question paper contains two parts A and B. Each part is compulsory.

2. Part A carries 20 marks while part B carries 30 marks.

3. Part-A consists very short answer and case based MCQ Questions and Part-B is Descriptive Paper.

4. Both Part A and Part B have choices.

Part - A:

1. It consists two section - I & II,

2. Section I has 13 questions of very short answer type. An examinee is to attempt any 10 out of 13 questions.

3. Section II has tow case studies. Each case study has 7 case-based sub-parts. An examinee is to attempt any 5 out of 7 sub parts.

Part - B:

1. Question No. 16 to 20 are short answer Type (SA-I) questions of 2 mark each, Question No. 21 to 25 are Short Answer Type (SA-II) questions of 3 marks each and Question No. 26 is Long Answer Type question of 5 marks.

2. Internal choice is provided in 1 question of 2 marks, 1 question of 3 marks and 1 question of 5 marks.

PART - A

Section - I

This section consists of 13 questions of very short answer type. Question no. 4 to 8 are of 'Fill in the blank'. Fill the blank with the most appropriate answer. Attempt any 10 questions from question no 1 to 13.

Q.1 What is Homepage? 1

Ans: The default (first) page of a website is called a Homepage.

Q.2Which heading element gives the most prominent headings? 1

Ans: <H1>

Q.3 Give one use of anchor tag. 1

Ans: Anchor tag is used to create hyperlinks.

Q.4 _______ tag is used for a horizontal line. 1

Ans: HR tag.

Q. 5 An empty HTML element has a ______ tag but no ______ tag. 1

Ans: start, end

Q.6 _______ tag creates a bulleted list. 1

Ans: <UL>

Q.7 The code for inserting an image in an HTML page is 1

<imgscr = " " alt = " ">. The alt attribute is used for _________.

Ans: specifying alternate text for the image.

Q.8 Ravi was trying to log-in to his net-banking account. He noticed that the URL of the net banking starts with 'https'. The 's' in 'https' stands for ________. 1

Ans: Secure

Q.9 Sarita is designing a web page and wants to change the name of the font (font-type) for certain text. Which attribute of the FONT tag she should use. 1

Ans: face

Q.10 What is the use of <br> tag in HTML Code? 1

Ans: <br> tag is used to insert a single line break in a HTML Document.

Q.11 What is the significance of the URL? 1

Ans: URL specifies unique address of each document on the internet.

Q.12 What is the importance of vlink attribute of <BODY> tag? 1

Ans: vlink attribute specifies the color of visited links in a document.

Q.13 What is the method of using comment line in the HTML code? 1

Ans: 

Section - II

Both the case study based questions are compulsory. Attempt any 5 questions (out of 7 questions) from each case study. Each question carries 1 mark.

Q.14 Internet Protocols

For communication over the Internet, the communicating devices must follow certain rules. These rules are called Internet protocols. For email communication, we use SMTP and POP. For communication between browser and server HTTP and HTTPS protocols are used. We can use Telnet to access services available on a remote computer.

(i) Which of the following is an Internet Protocol. 1

(a) HTTP

(b) FTP

(d) None of the above

Ans: (c) both (a) and (b)

(ii) SMTP protocol is: 1

(a) used for composing and email message.

(b) used in receiving incoming emails by pulling the message from server to client.

(d) None of the above

Ans: (c) used in sending outgoing emails by pushing the message from client to server

(iii) POP protocol is 1

(a) used for composing an email message.

(b) used in receiving incoming e mails by pulling the message from server to client.

(d) None of the above

Ans: (b) used in receiving incoming e mails by pulling the message from server to client.

(iv) Which of the following internet protocols provides secure data transmission between server and browser with the help of encryption. 1

(a) HTTP

(b) HTTPS

(d) ARPANET

Ans: (b) HTTPS

(v) The full form of POP (email protocol) is: 1

(a) Post Order Protocol

(b) Push Order Protocol

(d) Pull Over Protocol

Ans: (c) Post Office Protocol

(vi) Which of the following protocol is used for delivering data from the source to the destination. 1

(a) TCP

(b) IP

(d) ARPANET

Ans: (b) IP

(vii) The Full Form of SMTP is 1

(a) Secure Mail Transfer Protocol

(b) Secure Mail Transmit Protocol

(d) Simple Mail Transfer Protocol

Ans: (d) Simple Mail Transfer Protocol

Q.15 Secure data transmission

Secure data transmission means that data/information is not being received or modified by an unauthorized person, over a network, from source to destination. For secure data transmission. We can convert and actual message (which is in readable form) into an unreadable message (called an encrypted message) with the help of the concept of encryption. This unreadable message is sent through the network to the destination. If a hacker tries to read this message, he/she receives and unreadable message that cannot be easily converted into the actual message. the unreadable message can be converted to the original message by the receiver at the destination.

Caesar Cipher is one of the common encryption techniques. In this technique, each latter of the word is replaced by a letter some fixed number of positions (usually called as key) down the alphabet. For example, if the key is 3, each 'A' will be replaced by 'D' (Letter 'D' is 3 positions down Letter 'A' in the alphabet), each 'B' will be replaced by 'E' and similarly, each 'Z' will be replaced by 'C'. the receiver can identify the original message by using the reverse technique of encryption. The reverse technique is called decryption.

(i) Secure data transmission means 1

(a) Data can be accessed by any unauthorized person during transmission.

(b) Data can not be accessed by any unauthorized person during transmission.

(d) None of the above

Ans: (b) Data can not be accessed by any unauthorized person during transmission.

(ii) Which of the following techniques can be used for security of data. 1

(a) Authentication

(b) Authorization.

(d) All of the above

Ans: (d) All of the above

(iii) Caesar Cipher is 1

(a) used for conversion of the actual message into an encrypted message.

(b) an encryption technique

(d) None of the above

Ans: (c) both (a) and (b)

(iv) Person 'X' has received and encrypted message and wants to convert this message into the actual message (message before encryption). the technique he should use is called 1

(a) Conversion

(b) Encryption

(d) None of the above

Ans: (c) Decryption

(v) A sender wants to send a message having the text as 'COMPUTER' to a receiver using 4 as the key. What will be the encrypted message? 1

(a) GSQTZXIV

(b) GSQTYXIV

(d) GSQSYXIV

Ans: (b) GSQTYXIV

(vi) An encryption algorithm is used to transform a readable message into: 1

(a) Text message

(b) Simple message

(d) Encrypted message

Ans: (d) Encrypted message

(vii) In Cesasr Cipher, for which of the following values of key, the encrypted message will be the same as original message. 1

(a) 0

(b) 26

(d) None of the above

Ans: (c) both (a) and (b)

Part - B

All questions are compulsory. In case of internal choices, attempt any one.

Q.16 Sarvesh, a student of Class X, is not able to understand the difference between web client and web-server. Help him in understanding the same by explaining their role and giving suitable example of each. 2

Ans: Web-Client: An application (Web Browser, Chatting Program, etc.) that requests for services from a web- server. Example: Web Browsers, Chatting Applications Web-Server: Web-server is a software (or any dedicated computer running this software) that serves the request made by web-clients.

Example : Apache Server

Q.17 Write the full form of Cc and Bcc (used in email communication). Explain the difference between them. 2

Ans: Cc : Carbon Copy: every recipient can check who else has received the mail.

Bcc : Blind Carbon Copy: no recipient can check who else has received the mail.

Q.18 What is the use of <sub> and <sup> tag. Explain with suitable example. 2

Ans: <sub> : defines subscripted text

<sup> : defines superscripted text

Example To write a2 : a<sup>2</sup>

To write CO2 : CO<sub>2</sub>

Q.19 Sunil wants to insert an image 'elearning.jpg' into a webpage. Write the name and the syntax of the HTML Tag she should use. The alternate text for the image should be 'E-learning Image' 2

Ans: Name of Tag : Image Tag (<img>)

Syntax of Tag :<imgsrc = "elearning.jpg" alt = "E-learning Image">

Q.20 Define the following 2

(i) Intellectual Property Rights

Ans: Intellectual Property Rights: rights given to creators for creations of their minds.

(ii) Plagiarism

Ans: Plagiarism: taking credit of ideas/words of another person

What is e-commerce? Write any two preventive measures to be taken for secure online transaction.

Ans: e-commerce: Buying and selling of goods on the internet Two preventive measures for secure online transaction

1. Never share OTP with anyone.

2. Before making an online payment, ensure that connection is secure (HTTPS)

Q.21 Shalini, a web designer, wants to create a webpage to display a list where each item is listed by a number. Which types of list she should use? Explain the role of start and type attributes. 3

Ans: Order List, Role

Start Attribute: specifies the start value of an ordered list Type Attribute: specifies the type of the list item marker

Q.22 What are the role of Row span and Colspan attribute? Explain with suitable HTML example. 3

Ans: Rowspan : Combine Cells vertically

Colspan : Combine Cells horizontally Example

Example:

<table border = '1'>

</tr>

<tr>

<td>Row-1 Column-1</td>

<td colspan="2">Row-1 Column-2and3</td>

<td rowspan="2">Row-1and2 Column-4</td>

</tr>

<tr>

<td>Row-2 Column-1</td>

<td>Row-2 Column-2</td>

<td>Row-2 Column-3</td>

</tr>

</table>

Q.23 Saroj, a student of Class X, wants to represent a table in webpage but she is unaware about the table tag. Explain her the role of <th>, <tr> and <td> tag. Write HTML code of a table and show the use of <th>, <tr> and <td> tag. 3

Ans: <tr> : defines table row.

<th> : defines table header.

<td> : defines table data/cell.

HTML Code

<table>

<tr>

<th>Roll Number</th>

<th>Name</th>

<th>Stream</th>

</tr>

<tr>

<td>1</td>

<td>Ajay</td>

<td>Arts</td>

</tr>

<tr>

<td>2</td>

<td>Vijay</td>

<td>Commerce</td>

</tr>

<tr>

<td>3</td>

<td>Ramesh</td>

<td>Commerce</td>

</tr>

</table>

Q.24 What is the digital divide? Write any two reasons for digital divide in India. 3

Ans: Digital Divide refers to the differing amount of information between those who have access to ICT and those who don't have access.

Reasons

due to the unequal distribution of wealth, poverty is higher in rural areas
Less Literacy rate in rural India

Q.25 Define Internet and write its two uses in our daily life. How is it different from the World Wide Web (www). 3

Ans: The Internet is a worldwide network that links many smaller computer-networks.

Uses of the Internet

1. e-learning

2. e-commerce

The difference between the internet and www

www: It is a collection of various hypertext documents available over the internet. www is a part of the internet.

internet: A worldwide network that provides various other services (apart from www) like email-communication, File sharing, etc.

What is e-learning? Explain any tow merits of e-learning.

Ans: e-learning: learning through the courses which are delivered online

Benefits :

1. Self Paced (Learn at your speed).

2. We can attend classes atanytime and anywhere

Q.26 Our Country : India 5

India is spread over a large geographical area. In terms of area, it is the 7th largest country while in terms of population, it is the 2nd largest country in the world. Some facts about India are follows:

Area: Approx 3.28 million sq. km
North to South extension: Approx 3,200 km
East to West extension: Approx 2900 km

Write the HTML code to design the above-shown web page considering the specifications as given below:

Background color of the page should be yellow.
Heading 'Our Country : India' should be the first level of heading.
The image named 'India.jpg' should be placed at the center.
Formatting style for the paragraph

Font Size: 5
Font Name: Times New Roman
Color : Red

Superscript and subscript tags should be used wherever required.
Facts (as shown in the above web page) should be written with the help of the unordered list.

Ans:

<html>

<body bgcolor="yellow">

<center>

<h1> Our Country : India </h1>

<imgsrc="india.jpg">

</center>

<p>

<font color="red" size="5" face="Times New Roman"> India is spread over a large geographical area. In terms of area, it is the 7<sup>th</sup> largest country while in terms of population, it is the 2<sup>nd</sup> largest country in the world. Some facts about India are as follows</font></p>

<ul>

<li>Area :Approx 3.28 million sq. km </li>

<li>North to South extension :Approx 3,200 km</li>

<li>East to West extension :Approx 2900 km</li>

</ul>

</body>

</html>

Answer the following

a. What is a Hypertext link>

Ans: Hyperlink allows us to link HTML elements (text and/or image) to another document or new section within the current document.

b. Give the name and the syntax of the HTML Tag which is used for creating a Hypertext Link.

Ans: Name : anchor tag, Syntax <a href="Link Address">Hyperlink Text</a>

c. Neha wants to display a 'Click Here' message on her webpage which, when clicked, opens a new webpage 'Chapter2.html'. Write the syntax of the HTML command she should use.

Ans: <a href="Chapter2.html">Click Here</a>

d. On the same webpage, Neha whose email is neha@xyz.com, wants to display a 'Contact us' message which when clicked open the email program and allows the user to send a mail to Neha. Write the syntax of the HTML command she should use.

Ans: <a href="mailto:neha@xyz.com">Contact us</a>

e. Explain the use of the target attribute in the Hypertext Link Tag.

Ans: Specifies where to open the linked document when the link is clicked.

!!! THANK YOU !!!

Python & MySQL

Tuesday, October 20, 2020

COMPUTER APPLICATION SAMPLE PAPER (CLASS - X) 2020-21

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