A communication link has a bit rate of 1 Gbps and a length of 40 km. Propagation velocity is2.5 × 108 m/s. Information frames are 9200 bytes long. The frame header is 100 bytes. One100-byte ACK frame is sent for every received information frame.(a) What is the minimum window size that maximizes the effective bit rate?(b) What is the information effective bit rate if the window size is 3 frames?(c) What is the information effective bit rate if the window size is 100 frames? these are the final answers: a) Wsmin = 6, b) Reff = 554 Mbps, c) 989 Mbps

A communication link has a bit rate of 1 Gbps and a length of 40 km. Propagation velocity is2.5 × 108 m/s. Information frames are 9200 bytes long. The frame header is 100 bytes. One100-byte ACK frame is sent for every received information frame.(a) What is the minimum window size that maximizes the effective bit rate?(b) What is the information effective bit rate if the window size is 3 frames?(c) What is the information effective bit rate if the window size is 100 frames? these are the final answers: a) Wsmin = 6, b) Reff = 554 Mbps, c) 989 Mbps

Operations Research : Applications and Algorithms

4th Edition

ISBN:9780534380588

Author:Wayne L. Winston

Publisher:Wayne L. Winston

Chapter20: Queuing Theory

Section20.10: Exponential Queues In Series And Open Queuing Networks

Problem 8P

See similar textbooks

Similar questions

A communication link has a bit rate of 10 Gbps and a length of 20 km. Propagation velocityis 2.5 × 108 m/s and ACK frames are piggybacked on information frames going in the reversedirection, one ACK for every received frame. Information frames are 9000 bytes long. The frameheader is 100 bytes.(a) What is the minimum window size that maximizes the effective bit rate?(b) What is the information effective bit rate if the window size is 16 frames? The final answers are a) Wsmin = 25 (piggybacked means ACKs embedded in info frames), b) 6.53 Gbps
Consider an error-free 64 kbps satellite channel used to send 512 Byte data frames in one direction, with very short acknowledgment coming back the other way. The earth-satellite propagation delay is 270 msec. What is the efficiency if stop and wait flow control is used? What will be efficiency if the window size changed to 7? What is the optimal window size to maximize the channel efficiency?
A network with a bandwidth of 20 Mbps can theoretically pass only an average of 12,000 frames per minute. a) What is the average size of the frame expressed in bits? b) The Achieved throughput is 5 Mbps. What is the ratio of throughput/bandwidth?
Subject - Data Communication 3. Microwave frequency range between 108 to 1010 Hz. What is its associated wavelength?4.(i). Suppose a digitized TV picture is to be transmitted from a source that uses amatrix of 480x500 pixels, where each pixel take one of 32 intensity values. If 30pictures are sent per second, calculate the source data rate in bps. (1 point)(ii). Assume that the TV picture is to be transmitted over a channel with 4.5 MHzbandwidth and 35 dB signal-to-noise ratio. Find the data rate of the channel inbps. (please show your work clearly)5. A digitized signal is required to operate at 9600 bps. It the signal encodes a 4-bit word,what is the minimum required bandwidth assuming the channel is noiseless. Thank you in advance and please happy if you left the reference.
84. A network with bandwidth of 10 Mbps can pass only an average of 12,000 frames per minute with each frame carrying an average of 10,000 bits. What is the throughput of this network ? a. 1 Mbps b. 2 Mbps c. 10 Mbps d. 12 Mbps
A network with bandwidth of 11 Mbps can pass only an average of 21,000 frames per minute with each frame carrying an average of 11,000 bits. What is the throughput of this network?
profile-image Time remaining: 00 : 09 : 15 Computer Science 8. In multimedia applications, buffers are very important to deal with jitter, what is the best buffer size (B) 1. the size of 1 packet 2. equal the maximum jitter 3. the same size as the streamed video 4. Zero (no buffer is needed) - In streaming multimedia using UDP, the video source generates frames at the rate of 30 frames per second, what is the transmission rate (send rate ) 1. we cannot use UDP with video streaming 19- Wirless networks have higher packet loss/delay due to bit-errors (discarded packets, delays for link-layer retransmissions), and handover loss True false 2. 30 frame per second 3. variable rate 4. 1 frame per second
Que.a) Consider a CSMA/CD network that transmits data at a rate of 400 x 106 bits per second. The maximum signal propagation time from one node to another node is 20 microseconds. The minimum size of a frame in the network is(. bytes).
3) Assume that we have a UART that has a transmission speed of up to 10MBps (Mega Bytes per second) 3.1) How many bits does it transmit per second 3.2) And how long does it take for it to transmit a 200MB file?
Suppose that a sender and a receiver exchange data via UART with followingconfiguration:Baud rate = 115200 bits/s 1 start bit, 2 stop bits, 8 data bits, 1 parity bit 16 clock periods used for sampling 1 bit Answer the following questions please and thank you(a) What is the required clock frequency?(b) Suppose a 48 MHz clock. What is a suitable division factor to generate the neededclock in sub-question (a)?(c) How long does it take to transfer 10 MBytes of data?
Consider a satellite link with a capacity of 1 Mbps, bit error rate 10^-8 , and propagation delay of 270 msec. Assuming selective reject ARQ with a window of 64 and 10,000 bit frames, calculate the maximum link utilization
Data communication Suppose that the spectrum of a channel is between 8 MHz and 10 MHz, and the intended capacity is 8 Mbps. 1= With multiple signaling level, how many levels are required to obtain this capacity and how many bits can be transferred with each signal element? Constant values= c=3x^10°m/s, k=1,38x^10231/K