NEW
Font size
WorksheetsUnit 1 data compression
Total questions: 8
Worksheet time: 4mins
A single ASCII character, such as a the letter 'A', uses how much memory to represent a single character?
1 KiB
7 bits
7 bytes
1 bit
The letter 'A' in ASCII is represented using the code 6510. Which code represents the letter 'G'?
6810
6910
7010
7110
The digit '0' is represented in ASCII by the code 4810. How is the text '13' represented in ASCII?
001100012 001100112
001100012 001100012
001100012 001100112
001000012 001000012
An image has a resolution of 8 pixels in width, and 8 pixels in height. The color depth is 8 bits. How large is this image in bytes?
256 bytes
64 bytes
512 bytes
32 bytes
Audio is sampled at a rate of 10 Hz, and with a sampling resolution of 8 bits. If the resulting file size is 240 bits, what is the duration of the sampled audio?
3/8 seconds
10 seconds
19200 seconds
3 seconds
Run-Length Encoding (RLE) is a lossy compression algorithm.
When audio is sampled, the number of bits used to represent the amplitude of the audio signal is called the
duration
sampling resolution
sampling rate
pixel
Lossy compression will result in permanent loss of data.
