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什么是ACK

用户头像wangnuoya111

2013-04-19

满意答案

wwtst
LV12
推荐于2017-09-07
ACK (ACKnowledgmen来自t) 的意思是:

TCP首部中的确认标志,对已接受到的TCP报文进行确认。

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ACK - ACK signal
In some digital communication protocols, ACK is the name of 360问答a signal that data has been received successfully (for example, with an acceptable number of errors). The ACK signal is sent by the receiving station (destination) back to the sending station (source) a又出争助取板成围短河fter the rec会审精者参标怀蛋eipt of a r是困误现景斯景伤难ecognizable block of data of 掉当永余组千附苏九specific size. In order to be recogniz动刻效市黄斤况育写判able, the data block must conform to the protocol in use. When the source receives the ACK sign右算进查绝言还乎al from the destination, it transmits the next block of data. If the source fails to receive the ACK signal, it either repeats the b冲保谁lock of data or else ceases transmission, depending on the protocol.

The ACK signal is usually an 式血促所ASCII character that is reserved for that purpose. In some protocols比住胡了, there are various ACK signals that indicate the successful reception and recognition of specific commands, such as power-down or standby.

什么是ACK信号?
城何课叶师难在数字通信协议中,如果接受方成功的接收到数据,那么会回复一个ACK信号。通常ACK信号有自己固定的格式,长度大小,由接受方回复给发送方。其格式取决于采取的网络协议。当发送方接收到ACK信号时,就可以发送下一个数据。如果发送方没有收到信号,那么发送方可能会重发当前数据包,也可能停止传送数据。具体情况取决于所采用的网络协议。ACK信号通常是一个ASCII字符,不同的协议中A么查预合伤品元CK信号都不一样。

Acknowledge Character
就是确认字符
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