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NumbersTexts

# NumbersTexts - EnCase exam screenshot showing a files name...

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EnCase exam screenshot showing a file’s name in MFT (master file table) of the NTFS file system: File name in Unicode: “System.Drawing. Design.dll”

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Number system: decimal system : e.g., 123 = 1 * 10 2 + 2 * 10 1 + 3 * 10 0 binary system : e.g., 1101 = 1*2 3 + 1*2 2 + 0*2 1 + 1*2 0 = 13 (in decimal) hexadecimal system : a base-16 system as an abbreviation for binary system by grouping 4 bits into a hex digit (0 – 9, A F), e.g., 4C2E = 4*16 3 + 12*16 2 + 2*16 1 + 14*16 0 = 19502 (in decimal, converted using Windows calculator pad) (1) Check hex (2) Enter hex value (3) Convert to decimal
Example . An IDE hard disk of size 60 GB (i.e., 60 billion bytes), which has a single partition of size 57207.9 MB (Megabytes). Why is the difference in size? Answer : 1 KB = 1,024 bytes = 2 10 bytes; 1 MB = 2 20 bytes = 1048576 bytes. Thus, 57207.9 * 1048576 = 59986830950.4 60 billion bytes Representing negative numbers: Two common ways of representing negative numbers are sign-

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NumbersTexts - EnCase exam screenshot showing a files name...

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