1) What is the formula to calculate the file size of a bitmap image? a) File Size (in Kb) = Width (in pixels) × Height (in pixels) × Bit Depth (in bits) / 800 1111 b) File Size (in bytes) = Width (in pixels) × Height (in pixels) × Bit Depth (in bits) / 8 c) File Size (in bits) = Width (in pixels) × Height (in pixels) × Bit Depth (in bits) / 80100 0000 d) File Size (in Mb) = Width (in pixels) × Height (in pixels) × Bit Depth (in bits) / 80100 0000 e) File Size (in Gb) = Width (in pixels) × Height (in pixels) × Bit Depth (in bits) / 80100 0000 f) File Size (in nibbles) = Width (in pixels) × Height (in pixels) × Bit Depth (in bits) / 80100 0000 2) A bitmap image has a resolution of 800x600 pixels and a bit depth of 24 bits. Calculate its file size in bytes. a) 1.37 MB b) 1.37 KB c) 1,440,000 bytes d) 1,440,000 KB e) 1,440,000 bits f) 1.37 GB 3) If a bitmap image has a resolution of 1024x768 pixels and a bit depth of 8 bits, what is its file size in kilobytes (KB)? a) 786,432 bytes b) 7.68 KB c) 768 KB d) 0.75 MB e) 6291456 bits f) 0.768 KB 4) Which of the following represents compression ratio? a) Compression Ratio = Compressed File Size/Original File Size b) Compression Ratio = Original File Size/Resolution c) Compression Ratio = Original File Size/Bit Depth d) Compression Ratio = Original File Size / Compressed File Size e) Compression Ratio = Compressed File Size/resolution f) Compression Ratio = Compressed File Size/bit depth 5) What happens to the file size when you increase the resolution of a bitmap image while keeping the bit depth the same? a) file size stays the same b) file size increases c) file size decreases d) Cannot calculate as bit depth has not changed e) the bit depth decreases f) the resolution increase 6) How does increasing the bit depth of a bitmap image affect image colour while keeping the resolution constant? a) more colours are represented b) fewer colours are represented c) number of colours represented stays the same d) image colour is not affected by resolution e) bit depth is the number of bits per pixel f) resolution increases the number of colours 7) f a bitmap image with a resolution of 1280x720 pixels has a file size of 2.5 megabytes (MB) and a bit depth of 24 bits, what is its compression ratio? a) 0.107 MB b) 10.7 MB c) 1.07 MB d) 1.07 KB e) 0.107 GB f) 0.0107 KB

S3 Data Representation (File Size)

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