Short Answer Type Questions: Multimedia, Chat Sites and Social Networks | Computer Applications for Class 9 PDF Download

Q.1. List two types of multimedia.

Linear and Non-Linear

Q.2. What is generative graphics?

Generative Graphics is extensively used in drawings and illustrations in the form of 2-D and 3-D pictures. It is created for mathematical representation of simple objects.

Q.3. State two disadvantages of microwaves.

Disadvantages

• Line-of-sight will be disrupted if any obstacle, such as new buildings, are in the way
• Difficult weather conditions like rain, thunder, storm, lightening affects microwave transmission.

Q.4. What does MPEG stand for? What are the file extensions of MPEG file format?

MPEG (Moving Pictures Expert Group) format is the most popular format on the Internet. It is cross-platform, and supported by all the most popular web browsers.

Videos stored in the MPEG format have the extension .mpg or .mpeg.

Q.5. Name any hardware and software requirement for text element in multimedia.

The hardware and software requirements for text matter as follows:

• Keyboard
• Optical Character Recognizers (OCR)
• Text Editors
• Text Style
• Text Searching 
• Hypertext
• Text Importing & Exporting

Q.6. What is raster graphics?

Raster graphics or bitmap image on the other hand is a dot matrix data structure, representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium.

Q.7. What are the different type of audio formats used in multimedia?

They are:

• Uncompressed audio formats

• Lossless compression

• Lossy compression

Q.8. What is real audio? Name the file extensions of real audio.

Real Audio is a proprietary format, and is used for streaming audio that enables you to play digital audio files in real-time.
Files with this format has the .ra .ram or .rm extension.

Q.9. What is tweened path animation?

Tweened path animation: Tweening is a traditional animation term that describes the process in which a lead animator draws only the animation frames where major changes take place, called keyframes. Assistants draw the frames in between. Adobe Flash may be used to create tweened path animation.

Q.10. What is multimedia?

Multimedia is the field concerned with the computer-controlled integration of text, graphics, drawings, still and moving images (Video), animation, audio, and any other media where every type of information can be represented, stored, transmitted and processed digitally.