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ARQ stands for __________

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ARQ stands for __________

(a) Automatic Repeat Request

(b) Automatic Request Repeat

(c) Application Repeat Request

(d) Application Request Repeat

I have been asked this question during an internship interview.

My question is from Transport Layer topic in portion Internet Principles of IOT

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The correct option is (a) Automatic Repeat Request

The explanation: TCP, not UDP, provide end to end communication, i.e. error recovery by means of error detecting code and automatic repeat request protocol. The ARQ protocol also provides flow control, which may be combined with congestion avoidance.

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