WorksheetsBTEC IT - File types & compression
Total questions: 16
Worksheet time: 8mins
Image file that uses up to 16 million colors. It is the most common format for storing and transmitting photographic images , but does not support transparency.
PNG
JPG
TIF
GIF
what type of file is .jpg
video
audio
video / audio
image
what type of file is .mov
audio
text
video
image
what type of file is .ppt
text
excel
access
powerpoint
what type of file is .rtf
text
audio
video
rich text format
Lossy compression is commonly used for image, video, and audio files because human sight and hearing are imperfect and cannot detect small losses in the data.
TRUE
FALSE
Which kind of file would be hurt most by a lossy compression algorithm?
A text document
An audio file containing music
An audio file containing speech
A digital photograph
What is the difference between Lossy and Lossless compression?
Lossy compression reduces the file size without losing quality
Lossless compression only works for image files
Lossless reduces the file size without losing quality
Lossy compression isn't real
What would you use Compression for?
Making a file smaller
Increasing the files size
Modifying a file
Which is bigger?
MB (Megabyte)
TB (Terabyte)
GB (Gigabyte)
KB (Kilobyte)
