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CNIT 420 Final Exam with correct answers
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CNIT 420 Final Exam with correct answers
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CNIT 420 Final Exam with correctanswers
graphics files, collection of dots - ANSWERS✔✔ bitmap images
graphics files, based on mathematical instructions - ANSWERS✔✔ vector graphics
graphics files, combination of bitmap and vector, combine raster and vector - ANSWERS✔✔
metafile graphics
stores graphic information as grids of individual
pixels (picture elements) - ANSWERS✔✔ bitmap images
also collections of pixels stored in rows, better for printing - ANSWERS✔✔ raster images
image quality, determines amount of detail - ANSWERS✔✔ resolution
produce digital photos in ? or ? format - ANSWERS✔✔ raw, exif
referred to as a digital negative, typically found on many higher-end digital cameras,
maintains the best picture quality, it's proprietary - ANSWERS✔✔ raw file format
the process of converting raw picture data to another
format is referred to as - ANSWERS✔✔ demosaicing
commonly used to store digital pictures, developed as a standard for storing metadata in
JPEG and
, TIF files - ANSWERS✔✔ exif format
T/F: Exif format collects metadata - ANSWERS✔✔ True
T/F: Gif and JPEG do not compress their data - ANSWERS✔✔ False - they do (BMP doesn't)
coding data from a larger to a smaller form - ANSWERS✔✔ data compression
two types of data compression - ANSWERS✔✔ lossless and lossy
reduces file size without removing data (GIF and PNG) - ANSWERS✔✔ lossless
compression
WinZip, PKZip, StuffIt, and FreeZip are all examples of lossy compression - ANSWERS✔✔
False - lossless
permanently discards bits of information (JPEG) - ANSWERS✔✔ lossy compression
deetermines what data to discard based on
vectors in the graphics file (Utility: LZip) - ANSWERS✔✔ vector quantization
recovering any type of file fragments - ANSWERS✔✔ Carving/Salvaging
Each graphics file has a - ANSWERS✔✔ unique header value
JFIF header value - ANSWERS✔✔ FF D8
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