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1 checksum
"A calculated value that is used to test data for the presence of errors that can occur when data is transmitted or when it is written to disk. The checksum is calculated for a given chunk of data by sequentially combining all the bytes of data with a series of arithmetic or logical operations. After the data is transmitted or stored, a new checksum is calculated in the same way using the (possibly faulty) transmitted or stored data. If the two checksums do not match, an error has occurred, and the data should be transmitted or stored again. Checksums cannot detect all errors, and they cannot be used to correct erroneous data." -
2 overhead
Work or information that provides support - possibly critical support-for a computing process but is not an intrinsic part of the operation or data. Overhead often adds to processing time but is generally necessary.
См. также в других словарях:
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not by any stretch of the imagination — not by any stretch (of the imagination) even if you try, it is still difficult to accept. She was never a great player, not by any stretch of the imagination. He s nice looking but by no stretch of the imagination could you describe him as… … New idioms dictionary
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