Why are packet losses more at the start of a transmission with the TCP Tahoe network configuration than they are during the typical timeout (packet losses with the regular timeout may be significantly bigger at the start of a transmission)? Can you provide an example of a link that can transmit successfully from time to forward and has a presumable capacity and beginning CW value?..

Why are packet losses more at the start of a transmission with the TCP Tahoe network configuration than they are during the typical timeout (packet losses with the regular timeout may be significantly bigger at the start of a transmission)? Can you provide an example of a link that can transmit successfully from time to forward and has a presumable capacity and beginning CW value?..

Comptia A+ Core 1 Exam: Guide To Computing Infrastructure (mindtap Course List)

10th Edition

ISBN:9780357108376

Author:Jean Andrews, Joy Dark, Jill West

Publisher:Jean Andrews, Joy Dark, Jill West

Chapter8: Network Infrastructure And Troubleshooting

Section: Chapter Questions

Problem 8TC

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Why are packet losses higher at the start of a transmission in the TCP Tahoe network setup than during the typical timeout (packet losses with the ordinary timeout may be substantially higher)? Can you provide an example of a link with a presumable capacity and beginning CW value that transmits efficiently from t0? ..
A packet switch receives a packet and determines the outbound link to which the packet should be forwarded. When the packet arrives, one other packet is halfway done being transmitted on this outbound link and four other packets are waiting to be transmitted. Packets are transmitted in order of arrival. Suppose all packets are 1,200 bytes and the link rate is 2 Mbps. What is the queuing delay for the packet? More generally, what is the queuing delay when all packets have length L, the transmission rate is R, x bits of the currently-being-transmitted packet have been transmitted, and n packets are already in the queue?
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Consider a two-link network in which Host A has a 1 Mbps connection with a 10 ms propagation delay and the router has a 15 Mbps link with a 25 ms propagation delay. Host A sends Host B a 1500-byte packet. What is the packet transmission delay from the router to Host B (in milliseconds)?
If the TCP Tahoe configuration network is used, why packet losses during the beginning of the transmission is higher than during the normal timeout(packet losses during the normal timeout could be much more during the transmission beginning)? Can you give an example with an assumed link capacity and initial CW value that can be successfully transmitted from the initial time t0.?
To get around the problem of sequence numbers wrapping around while old packets still exist, one could use 64-bit sequence numbers. However, theoretically, an optical fiber can run at 75 Tbps. What maximum packet lifetime is required to make sure that future 75 Tbps networks do not have wraparound problems even with 64-bit sequence numbers? Assume that each byte has its own sequence number. as TCP does.
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A factor in the delay of a store-and-forward packet-switching system is how long it takes to store and forward a packet through a switch. If switching time is 10 usec, is this likely to be a major factor in the response of a client-server system where the client is in New York and the server is in California? Assume the propagation speed in copper and fiber to be 2/3 the speed of light in vacuum.
Assume a small communication network, consisting of two user stations and a base station (BS). The users are recording and transmitting data collected by sensors and are transmitting the data frames using frequency band BW, (uplink). BS only collects data and acknowledges them. It uses a different band BWBs (downlink) for transmissions. The uplink and downlink channels are assumed perfect; no packets are lost due to bit errors. An Aloha protocol is used to access the medium by the BS and users. The users generate traffic following Poisson distribution, with frame generation rate lu. The time duration of data frames is Tf whereas the duration of acknowledgements is TAck: Determine the probability that the frame generated by a user will be lost.
1 Suppose we need to design a stop-and-wait, reliable data transfer protocol between a sender A and a receiver B, over a direct link with the following characteristics. • The channel from A to B is unreliable and can lose packets. • The channel from B to A is reliable. • Neither channel will corrupt a packet (if a packet is received, it must be correct). • Neither channel will reorder packets. The maximum RTT between A and B is known and is guaranteed to be D. For each of the following techniques for building reliable data transfer protocol, please match on whether or not, it is needed in the design of the protocol. . Acknowledgement Negative Acknowledgement Sequence Number Timeout Choose... + Choose... + Choose... + Choose... +
strictly....Do not copy anything from anywhere. i'll give downvotes then
In the figure below a router is transferring packets, each of length L= 5 000 bits over a link with a transmission Rate R= 1 Mbps to another router at the other end of the link. The speed prorogation of the light signal on the link is 3x108 m/s. The length of the link is 1 Km. L: packet length (in bits) R: link transmission rates (Mbps) Queue of packets waiting for output link 1-Calculate the total transmission delay. 2- How many packets can be transmitted in one second.