In which ARQ, when a NAK is received, all frame sent since the last frame acknowledged an retransmitted ... selective-reject. both (a) and (b) Answer is: go-back-n .... •Stop-and-wait ARQ •Go-back-N ARQ •Selective-reject ARQ. Stop-and-WaitARQ •source transmits single frame •waits for ACK •no other data can be sent until destination's reply arrives •if frame received is damaged, discard it •transmitter has timeout •if no ACK within timeout, retransmit. Mekanisme Selective-Reject ARQ Sistem Selective-Reject ARQ juga disebut Selective-Detransmission. cara kerja sistem ini : hanya frame yang salah dikirim ulang dan frame yang diterima oleh penerima akan ditampung oleh satu Buffer; Meminimumkan retransmission. disini receiver harus menjaga frame yang telah diterima sehingga memiliki buffer yang.
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Selective Repeat ARQ/Selective Reject ARQ: Selective Repeat ARQ/Selective Reject ARQ protocol mechanism is similar to the Go-Back-N protocol mechanism but in Selective Repeat ARQ the sending process continues even after a frame is found to be corrupt or lost. This is achieved: the receiver process keeps track of the sequence number of the. Jan 02, 2020 · Video created by University of Colorado System for the course "Peer-to-Peer Protocols and Local Area Networks". This module examines peer-to-peer protocols and service models. Importantly, it examines three automatic repeat request (ARQ) .... Selective-Repeat : Pode ser transmitido até N quadros antes de receber uma confirmação, em caso de erro, apenas o quadro perdido/danificado é retransmitido. 3) No protocolo Selective-Repeat ARQ, se um NAK é recebido, só o frame perdido é retransmitido. 4) Cite os nomes dos tipos de frames HDLC e descreva-os. R: I-frame: Dados do.
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Back-N (GBN) Automatic Repeat Request (ARQ) retransmission scheme at the LC layer to cope with transmission errors. AIr also utilizes Repetition Rate (RR) coding to reach stations with low Signal to Noise Ratios (SNR). This paper studies the effec-tiveness of replacing the GBN ARQ scheme with a Selective Reject (SREJ) ARQ scheme. An analytical. Consider a selective-reject ARQ system with a window size of 3. a) Circle (or shade or bold) the sender window after frames 0 through 3 have been sent and ACK 2 has. Sliding window ARQ ; Go back N ; Selective reject (selective retransmission) University of Education ; 16. Stop and Wait . Source transmits single frame ; Wait for ACK ; If received frame damaged, discard it ; Transmitter has timeout ; If no ACK within timeout, retransmit.
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elective-Repeat ARQ Go-Back-N ARQ is inefficient of a noisy link. > In a noisy link frames have higher probability of damage , which means the resending of multiple frames. > this resending consumes the bandwidth and slow down the transmission . Solution. Selective Repeat ARQ protocol : resent only the damage frame. 0 2.7k views Distinguish between Go Back N ARQ and selective reject ARQ Sketch the frame flow diagram for Go Back ARQ and 3 bit sequence number field and window size of 5, showing the following events: written 3.5 years ago by teamques10 ★ 32k • modified 2.2 years ago (i)Frame 0 is sent, Frame 0 is acknowledged. Automatic repeat Request (ARQ) yang. terdiri dari 3 versi : Stop and wait ARQ. Go-back-N ARQ. Selective-reject ARQ. 4.2.2 Stop and Wait ARQ. Berdasarkan pada teknik flow control. stop and wait dan digambarkan dalam. gambar dibawah. Stasiun sumber. mentransmisi suatu frame tunggal dan. kemudian harus menunggu suatu. acknowledgment (ACK) dalam.
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