How Do You Spell AUTOMATIC REPEAT REQUEST?

Pronunciation: [ˌɔːtəmˈatɪk ɹɪpˈiːt ɹɪkwˈɛst] (IPA)

Automatic Repeat Request, commonly abbreviated as ARQ, is a communication protocol used to ensure error-free data transfer. The IPA phonetic transcription of this word is /ˌɔːtəˈmætɪk rɪˈpiːt rɪˈkwɛst/. The word "automatic" is spelled as "a-u-t-o-m-a-t-i-c", with the stress falling on the second syllable. "Repeat" is spelled as "r-e-p-e-a-t", with the stress falling on the first syllable. "Request" is spelled as "r-e-q-u-e-s-t", with the stress falling on the second syllable. ARQ is a crucial component of modern communication systems, facilitating reliable data transfer in a wide range of applications.

Meaning and Definition
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AUTOMATIC REPEAT REQUEST Meaning and Definition

  1. Automatic Repeat Request (ARQ) is a communication protocol used in computer networks to enhance the reliability and error detection of transmitted data packets. It is an essential function for ensuring message integrity and efficient data transfer in unreliable or noisy transmission environments.

    ARQ operates by automatically initiating the retransmission of data packets that have been either lost or corrupted during transmission. When a sender transmits a packet, it awaits acknowledgement from the receiver. If the receiver detects an error or does not receive the packet, it sends a negative acknowledgement (NACK) back to the sender, requesting a retransmission. The sender then resends the packet until a positive acknowledgement (ACK) is received, indicating successful delivery.

    There are mainly two types of ARQ protocols: Stop-and-Wait ARQ and Sliding Window ARQ. Stop-and-Wait ARQ is a simple mechanism where the sender transmits a single packet and waits for an ACK before transmitting the next packet. Sliding Window ARQ allows the sender to send multiple packets without waiting for individual acknowledgements, improving the protocol's efficiency.

    ARQ protocols utilize error detection techniques such as checksums or cyclic redundancy checks (CRCs) to identify data corruption during transmission accurately. By incorporating retransmission mechanisms, ARQ significantly reduces the probability of data loss or corruption, ensuring reliable communication between the sender and receiver.

    In conclusion, Automatic Repeat Request (ARQ) is a communication protocol that allows for the detection and retransmission of lost or corrupted data packets, ensuring reliable and error-free transmission in computer networks.