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Is used to combine many files into one file for easy distribution?
A file compression or "zip" utility
What is the difference between compression file and decompression file?
File Compression and DecompressionThe NTFS file system volumes support file compression on an individual file basis. The file compression algorithm used by the NTFS file system is Lempel-Ziv compression. This is a lossless compression algorithm, which means that no data is lost when compressing and decompressing the file, as opposed to lossy compression algorithms such as JPEG, where some data is lost each time data compression and decompression occur.Data compression reduces the size of a file by minimizing redundant data. In a text file, redundant data can be frequently occurring characters, such as the space character, or common vowels, such as the letters e and a; it can also be frequently occurring character strings. Data compression creates a compressed version of a file by minimizing this redundant data.Each type of data-compression algorithm minimizes redundant data in a unique manner. For example, the Huffman encoding algorithm assigns a code to characters in a file based on how frequently those characters occur. Another compression algorithm, called run-length encoding, generates a two-part value for repeated characters: the first part specifies the number of times the character is repeated, and the second part identifies the character. Another compression algorithm, known as the Lempel-Ziv algorithm, converts variable-length strings into fixed-length codes that consume less space than the original strings.The NTFS File System File CompressionOn the NTFS file system, compression is performed transparently. This means it can be used without requiring changes to existing applications. The compressed bytes of the file are not accessible to applications; they see only the uncompressed data. Therefore, applications that open a compressed file can operate on it as if it were not compressed. However, these files cannot be copied to another file system. If you compress a file that is larger than 30 gigabytes, the compression may not succeed.The following topics identify the NTFS file system file compression:
Difference between lossless and lossy compression?
File compression uses software algorithms to reduce file size by reducing the bit-rate of a file. Lossy compression takes it a bit further and lowers the quality of thr file to make it even smaller. Lossy compression is commonly used for media files, but would not be appropriate for other types of files.
What is loss-less data compression?
Lossy= Is generally more effective but when opening file it loses some data. This is most noticeable in compressed pictures Lossless= Is the most common method of compression and loses none of the data
What kind of data compression is most suitable for communication devices?
Data compression is basically used for communications as it enables devices to transmit or store the same amount of data in fewer bits. CCITT standard data compression technique for transmitting faxes, ARC and ZIP are the file compression formats and there is also data communication through modem.
what compression tool?
An hydraulic jack, and a pair of pliers are both mechnaical compression tools.In data handling there are compression tools which can reduce the quantity of spacea file takes up by eliminating unimportant data. such as spaces.
Decreasing the amount of space required to store data and programs is accomplished by?
File compression
How does compression affect the quality of a file?
That depends on the compression method used. There are some compression methods that are lossless, meaning that the original data can be 100% reconstructed. Zip files and similar methods use lossless compression.The compression used for images, photos, and video files is typically not lossless. Depending on the degree of compression achieved, there will be artifacts (imperfections) introduced in the data. A balance must be struck between the resulting file size and the degradation of the data.
How Compression affects the quality of the file?
That depends on the compression method used. There are some compression methods that are lossless, meaning that the original data can be 100% reconstructed. Zip files and similar methods use lossless compression.The compression used for images, photos, and video files is typically not lossless. Depending on the degree of compression achieved, there will be artifacts (imperfections) introduced in the data. A balance must be struck between the resulting file size and the degradation of the data.
Which type of image file format typically produces a large file size a JPEG file or TIFF file?
Tiffs typically produce larger files because their compression format maintains all the image data. Jpegs are "lossy," meaning their compression format works by discarding some of the data, reducing the number of colors stored in the image.
What is the current usage of data compression and encoding using colors?
Data compression is used by every indiviuald in normal course of day-to-day life. Enconding data through colors can be vary as per the type of file and format, however, an example could be taken of a PNG file using 256 PPI.
Does A file compression utility is a program that removes redundancies in a file to reduce the file size?
File Compression
