An Automatic Repeat Request (ARQ) courseware is demanded from the teacher for the course IIA0502 “Basics of Computer Networks”. Automatic Repeat Request (ARQ)
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ARQ Protocols Anish Goel
3. Academia.edu is a platform for academics to share research papers. Selective Repeat ARQ − This protocol also provides for sending multiple frames before receiving the acknowledgement for the first frame. Disadvantages • Requires a reverse channel for transmission of ACKs/NAKs • Poor signal conditions result in low transfer speeds as errors will cause delay variations due to retransmitted data. Automatic repeat request (ARQ) over Satellite Communication - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. S&W ARQ - Sequence Numbers in ACK
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ARQ Protocols Anish Goel
6. Stop-and-Wait ARQ
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ARQ Protocols Anish Goel
4. • Asking the sender to to send packets again instead of correcting them results in high data reliability. A java applet is the target of this design. However, here only the erroneous or lost frames are retransmitted, while the good frames are received and buffered. Automatic Repeat ReQuest (ARQ), also called Automatic Repeat Query, is an error-control protocol that automatically initiates a call to retransmit any data packet or frame after receiving flawed or incorrect data. Automatic Repeat reQuest Advantages • Provides a high throughput in good signal conditions. S&W ARQ - Sequence Numbers
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ARQ Protocols Anish Goel
5.