APCSP Q1 Review (2020)

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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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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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How many bits are in a byte?

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8

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For black and white images, a pixel is represented by

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one bit

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If 12 bits are used to represent one pixel of a color image, how many bits are used to represent each color channel?

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4

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How many more values can be represented by a 64 bit integer than a 32 bit integer? Options: 2 times as many values, 32 times as many values, 2^32 times as many values, 32^2 times as many values

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2^32 times as many values

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An image compression technique removes pixels with color differences that are difficult for the human eye to detect. This type of compression is

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lossy

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What is the binary number 101 written as a decimal?

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5

Front

What is the binary number 110 written as a decimal?

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6

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The single unit of information in a computer, typically represented as a 0 or 1.

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bit