Including: bit, nibble, byte, kibibyte (KiB), mebibyte (MiB), gibibyte (GiB), tebibyte (TiB), pebibyte (PiB), exibibyte (EiB). The amount of the previous denomination present in the data storage size, e.g., 8 bits in a byte, 1024 mebibytes in a gibibyte. Answers must be given in the units specified in the question. Calculations must use the measurement of 1024 and not 1000. Information given may include image resolution and colour depth, sound sample rate, resolution and length of track. Compression exists to reduce the size of the file. What the impact of this is, e.g., less bandwidth required, less storage space required, shorter transmission time. Lossy compression reduces the file size by permanently removing data, e.g., reducing resolution or colour depth, reducing sample rate or resolution. Lossless compression reduces the file size without permanent loss of data, e.g., run length encoding (RLE).