ARQ meaning in Computer and Networking ?

Answer: What is Automatic Repeat Request mean?

Automatic repeat request (ARQ), also known as automatic repeat query, is an error-control method for data transmission that uses acknowledgements (messages sent by the receiver indicating that it has correctly received a packet) and timeouts (specified periods of time allowed to elapse before an acknowledgment is to be received) to achieve reliable data transmission over an unreliable communication channel. If the sender does not receive an acknowledgment before the timeout, it re-transmits the packet until it receives an acknowledgment or exceeds a predefined number of retransmissions.

Variations of ARQ protocols include Stop-and-wait ARQ, Go-Back-N ARQ, and Selective Repeat ARQ. All three protocols usually use some form of sliding window protocol to help the sender determine which (if any) packets need to be retransmitted. These protocols reside in the data link or transport layers (layers 2 and 4) of the OSI model.

reference

Full Form	Category
Architectural Research Quarterly	Academic & Science
Arauquita	Airport Code
Automatic Repeat Request	Computer and Networking
Admission Request	Computing
Arqma	Cryptocurrency
Automatic Receiver Quieting	Electronics
Automatic Repeat Query	General
Automatic repeat quantization	General
Animal Rescue Queensland	General
Animal Rescue QLD	General
ARARIYA COURT	Indian Railway Station
Automated Response To Query	Military and Defence
Acquisition Review Quarterly	Military and Defence
Authentication Request	Space Science