WorksheetsDaqfurballmaze
Total questions: 10
Worksheet time: 5mins
Which of the following correctly shows the binary number 0001 0111 as a decimal number?
22
23
24
26
Which of the following correctly shows the decimal number 79 as a binary number?
1000 1111
0010 1111
0100 1111
0010 1110
How many bits are there in 4 bytes?
24
12
28
32
sRGB uses a(n) __-bit color depth, meaning each color channel (red, green, and blue) has 256 possible levels.
16
8
6
2
A video game character can face toward one of four directions: north, south, east, and west. Each direction is stored in memory as a sequence of four bits. A new version of the game is created in which the character can face toward one of eight directions, adding NW, NE, SW, SE. Which of the following is true?
Four bits are not enough to store the 8 directions. Five bits are needed.
Four bits are not enough to store the 8 directions. Eight bits are needed.
Four bits are not enough to store the 8 directions. Sixteen bits are needed.
Four bits are enough to store the eight directions.
Which of the following is happens when we decrease the size of each sample square?
Increases the number of samples taken giving a better digital approximation.
Increases the number of samples taken giving a worse digital approximation.
Decreases the number of samples taken giving a better digital approximation
Decreases the number of samples taken giving a worse digital approximation
Which of the following is true about an image sampled using only 32 bits of pixel data?
The sampled image would be an exact copy
32 bits would be enough to create an image, but the quality depends on how the original image was sampled
Using fewer bits to represent an image usually results in a sharper, more detailed image
Relatively large sample squares were probably used, which could cause the image to lose detail
Which of the following can be represented using just 0s and 1s?
Text
Images
Sounds
Movies
Digital images are exact copies of their analog counterpart?
True
False
Which of the following is true of lossy and lossless compression algorithms?
Lossy compression algorithms are used when perfect reconstruction of the original data is important.
Lossless compression algorithms only allow for an approximate reconstruction of the original data.
Lossy compression algorithms are typically better than lossless compression algorithms at reducing the number of bits needed to represent a piece of data.
Lossless compression algorithms are only used to compress text data.
