AP CSP Final Review Part 1

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Which of the following is TRUE regarding lossless and lossy compressions? An example of lossless compression is a .jpg file, Lossless uses inexact approximations while lossy does not· , You can completely reconstruct lossless but not lossy compression · , You can completely reconstruct lossy but not lossless compression

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You can completely reconstruct lossless but not lossy compression ·

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What is lossless compression?

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Shrinking data without losing any of it.

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Which of the following image files is compressed and lossless? A. BMP, B. JPEG, C. PNG, D. GIF

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PNG

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Which compression technique allows for the full reconstruction of the original data? Options: Lossy Compression, Multi-Band Compression, Lossless Compression , Parallel Compression

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Lossless Compression

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All of the following would be shown in metadata except: Width and Height of an Image, Type of Compression, Number of Colors, Resolution

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Type of Compression

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How many bits are in a byte?

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8

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A problem solving approach to find a satisfactory solution where finding an optimal or exact solution is impossible (for example, with compression) is called ________________.

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heuristic

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Approximately how much bigger (how many more bytes) is a megabyte than a kilobyte?

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1,000 times bigger

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Which of the following is TRUE regarding data compression? Data compression is only useful for files being transmitted over the Internet, Regardless of the compression technique used, once a data file is compressed, it cannot be restored to its original size., Sending a compressed version of a file ensures that the contents of the file cannot be intercepted by an unauthorized user., There are trade-offs involved in choosing a compression technique for storing and transmitting data.

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There are trade-offs involved in choosing a compression technique for storing and transmitting data.

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List the units of bytes in ascending order (from smallest to largest): kilobyte, gigabyte, terabyte.

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kilobyte, gigabyte, terabyte