NAK (negative adknowledgment)

A method of testing software. Each unit of code is tested independently to discover any errors or omissions and to ensure that it functions properly. Unit testing should be performed by the development staff. The testing of a module for typographic, syntactic, and logical errors and for correct implementation of its design and satisfaction of its requirements.
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Acknowledgement. A packet message used in the Transmission Control Protocol (TCP) to acknowledge receipt of a packetAcknowledgment. A type of message sent to indicate that a block of data arrived at its destination without error. A negative acknowledgment is called a “NAK. ”.
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A penetration technique that capitalizes on an operating system’s inability to properly handle asynchronous interrupts.
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A computed value that depends on the contents of a packet. This value is sent along with the packet when it is transmitted. The receiving system computes a new checksum based on receiving data and compares this value with the one sent with the packet. If the two values are the same, the receiver has a high degree of confidence that the data was received correctly. Value computed on data to detect error or manipulation during transmission. (. See hash total. )
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The probability that a particular threat agent will exploit, or trigger, a particular information system vulnerability and the resulting mission/business impact if this should occur. ISrelated risks arise from legal liability or mission/business loss due to (1) unauthorized (malicious, nonmalicious, or accidental) disclosure, modification, or destruction of information; (2) nonmalicious errors and omissions; (3) IS disruptions due to natural or manmade disasters; (4) failure to exercise due care and diligence in the implementation and operation of the IS.
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