A programmer wants to send a large program as an email attachment and wants compress it. Which of the following is correct.
It does not matter if the fille is compressed using lossy or lossless compression.
The file must be compressed using lossless compression or the program will become corrupted.
The file must be compressed using lossy compression or the program will become corrupted.
The file must be not be compressed because any form of compression will cause the program to become corrupted.
Which of the following statements is true about JPEG image files.
This file type file must be compressed using lossless compression or the image will become corrupted.
This file type file can be compressed using lossy compression because some loss of image quality is acceptable when the image is uncompressed.
This file type file must be compressed using lossy compression or the image will become corrupted.
This file type file can be compressed using lossless compression because some loss of image quality is acceptable when the image is uncompressed.
Which of the following statements is true about two JPEG image files compressed to 90% of the original (the colour depth, dimensions, resolution etc. are identical)
An image of tree foliage will be the same file size as an image of a cloudless sky.
An image of tree foliage will be a larger file size than an image of a cloudless sky.
An image of tree foliage will be a smaller file size than an image of a cloudless sky.
There is no connection between what the image is of and the size of the compressed image.
What is a definition of file compression?
File compression is the process of encoding information using fewer bits so that the compressed file size is smaller.
File compression is the process of encoding information using the same number of bits but a smaller file size.
File compression is the process of encoding information using a smaller number of bits but keeping the file size the same.
Which of the following statements is true?
Viewing a compressed video file involves more processing than viewing an uncompressed one.
Viewing a compressed video file involves less processing than viewing an uncompressed one.
Viewing a compressed video file involves the same amount of processing as viewing an uncompressed one.
Which of the following statements is true?
A GIF file is a bitmap image format that uses lossless compression. A JPEG file is a bitmap image format that uses lossy compression.
A GIF file and a JPEG file are both bitmap image formats that use lossy compression.
A GIF file and a JPEG file are both bitmap image formats that use lossless compression.
A GIF file is a bitmap image format that uses lossy compression. A JPEG file is a bitmap image format that uses lossless compression.
Which of the following statements is true about ZIP compressed files.
A file format that stores one or more files as a single lossless compressed file. Each compressed file is compressed individually, allowing it to be decompressed without having to decompress the whole ZIP file.
A file format that can only store single files as a single lossless compressed file.
A file format that stores one or more files as a single lossy compressed file. Each compressed file is compressed individually, allowing it to be decompressed without having to decompress the whole ZIP file.
A file format that stores one or more files as a single lossless compressed file. If multiple files are compressed then the whole ZIP file has to be decompressed to view a single file.
Which of the following statements is true about MP3 compressed files.
An audio file format commonly used to store music and voice data. MP3 files use lossy compression so the original quality is not fully preserved.
An audio file format commonly used to store music and voice data. MP3 files use lossless compression so the original quality is fully preserved..
An image file format commonly used to bitmap image data. MP3 files use lossy compression so the original quality is not fully preserved.
An audio file format commonly used to store music and voice data. MP3 files use lossy compression so the original quality is fully preserved.
Which of the following statements is true about MPEG compressed files.
This file format is commonly used to store video data. MPEG files use lossy compression and the audio/video compression levels can be set to allow a balance between file size (and therefore download time) and sound/image quality.
This file format is commonly used to store video data. MPEG files use lossless compression and the audio/video compression levels can be set to allow a balance between file size (and therefore download time) and sound/image quality.
This file format is commonly used to store audio data. MPEG files use lossy compression and the audio/video compression levels can be set to allow a balance between file size (and therefore download time) and sound/image quality.