Digital Information (Unit 2, Lessons 1-6)
Quiz by Brea Colagross
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10 questions
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- Q11000 megabytes is equivalent to approximately ______________.1TB1 GB1EB1KB120s
- Q2A gigabyte would be a good estimate for the size of which type of file?.jpeg (image)large database (such as Facebook).txt (text).mov (video)120s
- Q3A jpeg file would typically be measured in _______________.petrabytesgigabyteskilobytesmegabytes120s
- Q4An audio file, such as an MP3, would typically be about how large?about 1GB per minuteabout 1MB per minuteabout 3MB per minuteabout 15MB per song120s
- Q5What is data compression?Representing the same information with more bitsRepresenting the same information with completely different bitsRepresenting the same information with an equal number of bitsRepresenting the same information with fewer bits120s
- Q6A heuristic is ___________________.A problem solving approach to find a solution where there is only 1 solution that will work.A problem solving approach to find an exact solution.A problem solving approach to find exactly 5 solutions to a problem.A problem solving approach to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible.120s
- Q7A(n) _____________ is the fundamental unit of a digital image, typically a tiny square or dot which contains a single point of color of a larger image.pixelimagecompressionRGB120s
- Q8How many bytes (or bits) are required to encode an image that is 16 pixels wide and 18 pixels tall, if you encode each pixel with 3 bytes (24 bits) of RGB data.(Don't forget to add in the metadata! -- you should assume that we are using the file format used in this lesson with metadata that had 1 byte each for width, height and bits-per-pixel.)867 bytes288 bytes972 bytes1047 bytes120s
- Q9_______________ is a data compression method that uses inexact approximations, discarding some data to represent the content.Lossy CompressionPixelationText CompressionLossless Compression120s
- Q10Which type of file fits the description? Compressed Image - LossyJPEGBMPMP3WAV120s