Class 12 Web Applications 803 Previous Year Question Paper 2020 – New – Solution

by

Series HMJ
Question Paper Code 327 Set 4

WEB APPLICATIONS (NEW) – SOLUTION UPDATING…
(Session 2019-20)

Time allowed : 3 hours
Maximum Marks : 60

General Instructions :
Read the following instructions very carefully and strictly follow them :

  1. This question paper consists of two sections viz. Section A : Employability Skills and Section B : Subject Skills.
  2. Section A : Employability Skills (10 Marks)
    • Answer any 4 questions out of the given 6 questions of 1 mark each.
    • Answer any 3 questions out of the given 5 questions of 2 marks each.
  3. Section B : Subject Skills (50 Marks)
    • Answer any 10 questions out of the given 12 questions of 1 mark each.
    • Answer any 5 questions out of the given 7 questions of 2 marks each.
    • Answer any 5 questions out of the given 7 questions of 3 marks each.
    • Answer any 3 questions out of the given 5 questions of 5 marks each.
  4. This question paper contains 42 questions out of which 30 questions are to be answered.
  5. All questions of a particular part/section must be attempted in the correct order.
  6. The maximum time allowed is 3 hours.

SECTION A (Employability Skills) (10 Marks)

Answer any 4 questions out of the given 6 questions of 1 mark each. (1X4=4)

1. Name the term used for the process of creating a non-fiction text about current or recent news, items of general interest or specific topic.
Answer: Article writing

2. ____ is defined as the drive required to engage in goal-oriented behaviour.
Answer: Motivation

3. ____ directs the behaviour towards satisfying our specific bodily needs.
Answer: Physiological motivation

4. The shortcut key to paste selected text or object in a computer is ____.
a) CTRL+X
b) CTRL+C
c) CTRL+V
d) None of the above

5. A/An ____ may be defined as an underlying characteristic of a person which results in effective and/or superior performance in a job.
a) Motivation
b) Reliance
c) Competence
d) Inspiration

6. Solar energy is a form of green/clean energy. (True/False)
Answer: True

Answer any 3 questions out of the given 5 questions of 2 marks each. (2X3=6)

7. Write any four different kinds of sentences that you know ?
Answer: (i) Simple Sentence (ii) Exclamatory Sentence (iii) Interrogative Sentence etc.

8. Why is self-motivation important ? Explain with two points only.
Answer: Self-motivation is crucial factor for success, increasing productivity, and personal and professional development. Here are two key reasons why self-motivation is important:
(i) Achieving Goals: Self-motivated individuals have a clear sense of purpose and drive, which keeps them focused and committed to their objectives.
(ii) Resilience and Adaptability: They have the inner drive to overcome obstacles, learn from failures, and adapt to changing circumstances.

9. Give any two advantages of a spreadsheet software.
Answer: Spreadsheet software offers several advantages, but here are two key benefits:
(i) Data Organization: Spreadsheets are excellent tools for organizing and managing data. They provide a structured grid format where you can input, sort, and manipulate data efficiently.
(ii) Calculations and Formulas: Spreadsheets are equipped with powerful mathematical and computational capabilities. You can perform complex calculations, create formulas, and use functions to analyze data.

10. Give any two benefits of entrepreneurial competencies.
Answer: (i) Innovation and Adaptation: Entrepreneurs introduce new products, services, or processes that set their businesses apart in the market.
(ii) Problem-Solving: Entrepreneurs encounter numerous problems in the course of building a business and they tackle complex challenges and find innovative solutions.

11. List any two steps that green jobs can take to reduce greenhouse gas emissions.
Answer: Here are two steps that green jobs can take to contribute to this reduction:
(i) By advancing the development and utilization of renewable energy sources, green jobs directly reduce the reliance on fossil fuels, which are a significant source of greenhouse gas emissions.
(ii) Educate communities and individuals about the importance of reducing greenhouse gas emissions and provide them with actionable steps they can take.

SECTION B (Subject Skills) (50 Marks)

Answer any 10 questions out of the given 12 questions of 1 mark each. (1X10=10)

12. Application software that handles the post-production video editing of digital video sequences on a computer are called
a) NLE (Non-Linear Editing)
b) Notepad
c) MS-Word
d) Movie Editing Tools

13. VirtualDub is a video capture/processing software, licensed under
a) Microsoft
b) GPL (GNU General Public License)
c) General Purpose Use
d) General Private Use

14. ____ is an offline playback, editing, encoding, animation and visual effects tool based on the Jahshaka technology.
Answer: Cinefx Jashaka

15. Name the software that is meant for editing the kind of movies that VirtualDub can not.
Answer: Windows Movie Maker

16. XML stands for
a) Xtra Markup Language
b) Extensible Markup Language
c) Extensible Marking Language
d) Extensive Marked Language

17. .gif, .tga, .ps are examples of ____ format.
a) audio
b) video
c) image
d) sound

18. MIDI stands for
a) Musical Instrumental Digitized Interleave
b) Music Instrument Drama Interface
c) Multimedia Digital Interface
d) Musical Instrument Digital Interface

19. JavaScript was developed by
a) Brendan Eich
b) Dennis Ritchie
c) Robert Hooke

20. DOM stands for ____.
Answer: Document Object Model

21. Variables in JavaScript can be declared using
a) VAR
b) Var
c) var (case sensitive)
d) Dim

22. % in JavaScript is an example of
a) Arithmetic operator
b) Relational operator
c) Bitwise shift operator
d) Unary operator

23. Numbers in JavaScript are double-precision
a) 32-bit format
b) 128-bit format
c) 64-bit format
d) 16-bit format

Answer any 5 questions out of the given 7 questions of 2 marks each. (2X5=10)

24. Explain WAX and the different modes in which it can work.
Answer: Wax is a popular video editing tool that makes it easy to edit videos and add special effects. It’s versatile and can handle various video formats. Wax can even create both 2D and 3D special effects. It offers two different modes: a standalone application for beginners who want simplicity, and a “plug-in” mode for more experienced users who work with professional video editors.

25. Write any two features of AVITricks.
Answer: Its two notable features include:
(i) It is often available as freeware, which means you can use it without incurring any cost.
(ii) It offers a range of video filters to adjust the color, brightness, contrast, and other visual attributes of your videos.

26. Write any two features of timeline view in Windows Movie Maker.
Answer: Here are two features of the Timeline View in Windows Movie Maker are:
(i) The Timeline View provides a detailed, time-based representation of your video project, enabling precise editing down to individual frames. You can trim, split, and arrange clips with precision.
(ii) You can work with multiple video and audio tracks simultaneously on the timeline.

27. Name two image file formats that are popular for FTP and WWW. Also state whether they are compressible or not.
Answer: (i) JPEG (Joint Photographic Experts Group) (ii) PNG (Portable Network Graphics)
These two formats, JPEG and PNG, are commonly used for sharing and displaying images on the web because of their good compression capabilities, compatibility, and support for various web browsers and applications and yes, both are compressible.

28. Give any two tips to remember while writing JavaScript commands.
Answer: Two tips to remember while writing JavaScript commands are:
(i) Choose clear and meaningful variable names that describe the purpose of the variable.
(ii) Add comments to explain complex logic, functions, or sections of your code.

29. Write the output of the given code :
Class 12 WA 803 Previous Year Question Paper 2019-Q.29
Answer: INDIGO&BLUE&GREEN&

30. Explain the following terms :
(a) Code Optimization
(b) Fix Errors

Answer any 5 questions out of the given 7 questions of 3 marks each. (3X5=15)

31. Give two examples of each type of video, audio and picture file formats supported by Windows Movie Maker.

32. Is it possible to undo trim changes in a clip in Windows Movie Maker ? Explain the term contiguous clips. Name the two file formats in which a movie file is stored in Windows Movie Maker.

33. Explain any three attributes of object tag.

34. Give and explain any three applications of JavaScript.

35. Write a code in JavaScript that accepts a binary number from the user and displays its decimal equivalent number.

36. Explain the use of CSS. Also suggest two websites that offer free designs.

37. Write a code in JavaScript to accept five numbers from user, store them in an array, and display the sorted array.

Answer any 3 questions out of the given 5 questions of 5 marks each. (5X3=15)

38. Explain the following terms :
(a) MIDI
Answer: MIDI stands for Musical Instrument Digital Interface. MIDI data doesn’t contain actual audio but represents elements like musical notes, pitch, duration, and instrument information, enabling the exchange of musical information between different devices and software.
(b) Helper Applications
Answer: Helper applications, in the context of web browsers, are external software programs or plugins that are invoked by a web browser to handle specific types of files or content that the browser itself doesn’t support or is not optimized to handle.
(c) MixPod
Answer: MixPod is a term that refers to a now-defunct online music service and widget that allowed users to create and customize playlists of their favorite songs and embed them into websites, blogs, and social media profiles. MixPod was a popular platform for personalizing the music experience on the internet.
(d) Google Reader MP3 Player
Answer: The Google Reader MP3 Player refers to a now-deprecated feature in Google Reader, a web-based RSS feed reader. Google Reader allowed users to subscribe to RSS feeds from various websites, including those that provided audio content in MP3 format.
(e) Free Video Coding
Answer: Free video coding is a concept related to video compression and encoding. It often refers to the use of open-source or freely available video coding standards and software for compressing and encoding video content.

39. Give a brief note on the following file extensions :
(a) .mid
Answer: MIDI stands for Musical Instrument Digital Interface. MIDI files are a common file format used for storing musical information and sequences.
(b) .snd
Answer: It refer to sound files that contain audio data.
(c) .avi
Answer: It stands for Audio Video Interleave. AVI is a multimedia container format developed by Microsoft. It can contain both audio and video data, making it a widely used format for storing video clips, movies, and animations.
(d) .csv
Answer: It stands for Comma-Separated Values. CSV files are plain text files that store tabular data in a simple, human-readable format. Each line represents a record, and the values within each record are separated by commas (or other delimiters).
(e) .psd
Answer: It stands for Photoshop Document. PSD files are the native file format for Adobe Photoshop, a popular graphics editing software. They can contain multiple layers, images, and various elements used in graphic design and image editing.

40. Write a code in JavaScript to accept a number from the user and generate
(a) a random number greater than the number entered.
(b) next even number after the number entered.

// Prompt the user to enter a number
var userNumber = parseInt(prompt("Enter a number:"));

// Generate a random number greater than the user's number
var randomGreaterNumber = Math.floor(Math.random() * (userNumber + 1)) + userNumber + 1;

// Calculate the next even number after the user's number
var nextEvenNumber = (userNumber % 2 === 0) ? userNumber + 2 : userNumber + 1;

// Display the results
console.log("Random number greater than " + userNumber + ": " + randomGreaterNumber);
console.log("Next even number after " + userNumber + ": " + nextEvenNumber);

41. Write a program in JavaScript to accept marks in three subjects, display the total marks obtained, the percentage, and the grade as per the norms given below :
Class 12 WA 803 Previous Year Question Paper 2019-Q.41

// Accept marks in three subjects
function acceptMarks() {
 var subject1 = parseInt(prompt("Enter marks in Subject 1:"));
 var subject2 = parseInt(prompt("Enter marks in Subject 2:"));
 var subject3 = parseInt(prompt("Enter marks in Subject 3:"));

 // Calculate total marks, percentage, and grade
 var totalMarks = subject1 + subject2 + subject3;
 var percentage = (totalMarks / 300) * 100;
 var grade = calculateGrade(percentage);

 // Display results
 document.getElementById("totalMarks").innerHTML = totalMarks;
 document.getElementById("percentage").innerHTML = percentage.toFixed(2);
 document.getElementById("grade").innerHTML = grade;
}

// Function to calculate grade
function calculateGrade(percentage) {
 if (percentage >= 75) {
    return "A";
 } else if (percentage < 85 && percentage >= 60) {
    return "B";
 } else if (percentage < 60 && percentage >= 33) {
    return "C";
 } else {
    return "D";
 }
}

42. What may be the possible output of the following snippets :
(a) Predict the output of the following :
Class 12 WA 803 Previous Year Question Paper 2019-Q.42a
Answer: Output will be:
51
end of program
fruits[50] = "Orange" assigns “Orange” to the 51st element of the fruits array. It shows the length of the fruits array (51) and “end of program.”

Rewrite the following using switch case statement :
Class 12 WA 803 Previous Year Question Paper 2019-Q.42b

switch (a) {
    case 1:
        document.write("Monday, Wednesday, Friday");
        break;
    case 2:
        document.write("Tuesday, Thursday, Saturday");
        break;
    default:
        document.write("Sunday");
}

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