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It is important for the CISSP to understand software which may provide stenographic services. How many kiloBytes of data is a common image size of 640 x 480 which has 256 colors contains?
1500
300
900
2700
A common image size of 640 by 480 and 256 colors could contain of approximately 300 kB of data. (640 x 480)/1024=300, 256 colors=8 bits(i.e 1 byte). 640 x 480=image size in Bytes. Bytes/1024=KBytes. Note:: (640 x 480)/1024 would give you the file size for 1 bit of depth... ((640 x 480) x 8)/1024 would give you 8 bits of depth (256 colours).
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