COMPUTER NETWORKING

MULTIMEDIA AND QUALITY OF SERVICE

COMPRESSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these file types are good if you need a transparent background? HINT:Choose 2.
A
PNG
B
GIF
C
JPG
D
PDF
Explanation: 

Detailed explanation-1: -The GIF and PNG formats also both support transparency. If you need any level of transparency in your image, you must use either a GIF or a PNG. GIF images (and also PNG) support 1-color transparency. This basically means that you can save your image with a transparent background.

Detailed explanation-2: -JPEG is far better for photographs, while GIF is great for computer generated images, logos and line-art with limited palettes. A GIF will never lose its data. It uses lossless compression. It uploads quickly since these files are usually low resolution.

Detailed explanation-3: -Use JPEG format for all images that contain a natural scene or photograph where variation in colour and intensity is smooth. Use PNG format for any image that needs transparency, or for images with text & objects with sharp contrast edges like logos. Use GIF format for images that contain animations.

Detailed explanation-4: -GIF (stands for Graphics Interchange Format) was developed in the late 1980’s and it is still widely used. PNG (Portable Network Graphics) was developed around 1995, became a W3C recommendation in 1996, and has been widely implemented in most Web browsers as soon as 1998.

There is 1 question to complete.