NAK Negative AcKnowledge - определение. Что такое NAK Negative AcKnowledge
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Что (кто) такое NAK Negative AcKnowledge - определение

COMPUTING SIGNAL CONFIRMING RECEIPT OF A MESSAGE
Negative-acknowledge character; NAK; NACK; Acknowledge character; ␆; ACK (computing); ACK (networking); Acknowledgment code; Control-U; Ctrl-U; Negative acknowledge character; Nak; ␕; NAK (protocol message); ⍻; Acknowledgment (data networks); ASCII 6; ASCII 21; \x6; \x15; \x06; U+0006; U+0015; Negative-Acknowledge; Negative Acknowledge

Negative number         
  • A visual representation of the addition of positive and negative numbers. Larger balls represent numbers with greater magnitude.
  • Negative storey numbers in an elevator.
  • The number line
REAL NUMBER THAT IS STRICTLY LESS THAN ZERO
Negative numbers; Negative and nonnegative numbers; Positive and negative numbers; Antinumber; Negative negative; Negative Negative; Negative negative number; Negative negative numbers; Negative Negative number; Negative Negative numbers; Negative Negative Number; Negative Negative Numbers; Negative negative Number; Negative negative Numbers; Directed number; History of negative numbers; Negative and non-negative numbers; Negative Number; Minus number
In mathematics, a negative number represents an opposite."Integers are the set of whole numbers and their opposites.
Negative pricing         
  • futures]] prices on the [[New York Mercantile Exchange]] in March, April, and May 2020
PRICES BELOW ZERO
Negative price; Negative prices
In economics, negative pricing can occur when demand for a product drops or supply increases to an extent that owners or suppliers are prepared to pay others to accept it, in effect setting the price to a negative number. This can happen because it costs money to transport, store, and dispose of a product even when there is little demand to buy it.
Gram-negative         
  • [[Gram-positive]] and -negative [[bacteria]] are differentiated chiefly by their [[cell wall]] structure
  • Gram-negative [[cell wall]] structure
GROUP OF BACTERIA THAT DO NOT RETAIN THE GRAM STAIN USED IN BACTERIAL DIFFERENTIATION
Gram negative; Gram negative bacterium; Gram negative bacteria; Gram-negative bacterium; Gram-negative bacterial infections; Gram-negative oxygenic photosynthetic bacteria; Gramnegative bacteria; Negibacteria; Gram-negative bacilli; Gram-negative; Gram-; Diderms; Gram-negative bacterial; Diderm bacteria
¦ adjective see Gram stain.

Википедия

Acknowledgement (data networks)

In data networking, telecommunications, and computer buses, an acknowledgment (ACK) is a signal that is passed between communicating processes, computers, or devices to signify acknowledgment, or receipt of message, as part of a communications protocol. The negative-acknowledgement (NAK or NACK) is a signal that is sent to reject a previously received message or to indicate some kind of error. Acknowledgments and negative acknowledgments inform a sender of the receiver's state so that it can adjust its own state accordingly.

Many protocols contain checksums to verify the integrity of the payload and header. Checksums are used to detect data corruption. If a message is received with an invalid checksum (that is, the data received would have a different checksum than the message had), the receiver can know that some information was corrupted. Most often, when checksums are employed, a corrupted message received will either not be served an ACK signal, or will be served a NAK signal.