3. On a connection using the Sliding Window protocol, on the Sender side, Last Acknowledgement Received (LAR) = 3 and Send Window Size (SWS) = 15. What is the highest sequence number packet that the sender can send at this point? What does the Sender currently do with the packet with sequence number 21?
3. On a connection using the Sliding Window protocol, on the Sender side, Last Acknowledgement Received...
(a) In a sliding window protocol with RWS=SWS=5, a very large set of possible sequence numbers (assume no wrapping), and in-order packet arrivals, why can the receiver be assured -3- that it will never again receive the frame with sequence number 10 if it is currently expecting frame 17? (b) For the sliding window protocol, if the sender’s window size (SWS) equals the receiver’s window size (RWS), what is the minimum number of sequence numbers that are required? How many...
Consider a Go-Back-N protocol with a sender window size of 5 and a sequence number range of 1,024, and assume the receiver sends ACKs with the number of the next sequence number expected. Suppose that at time t, the next in-order packet that the receiver is expecting is a packet with the sequence number 8. Assume that the channel does not reorder packets. (a) What are the possible sets of sequence numbers inside the sender’s window at time t? Justify...
Since the range of sequence numbers is so large relative to the window size, when answering the questions, you don’t need to worry about the necessity of wrapping the sequence numbers from the higher end (1023) back to the lower end (0). 1.Consider the go-back-n protocol with a sender window size N=4 and a sequence number range of 0-1023. (Apparently, for some reason, this sender is not using the maximum possible value 1023 as its window size, but that is...
25. Suppose you are designing a sliding window protocol for a 1-Mbps point-to-point link to the stationary satellite evolving around the Earth at an altitude of 3 x 104 km. Assuming that each frame carries 1 KB of data, what is the minimum number of bits you need for the sequence number in the following cases? Assume the speed of light is 3 x 108 m/s. (a) RWS-1 (b) RWS-SWS
please answer the question clearly. Sliding window protocol with window size of 7 frames are used between the data link layers of machines A and B. Assume that machine B sends an ACK (acknowledgement) for every frame it receives without error, and it sends a NAK (negative acknowledgement) for every frame it receives with error. This corresponds to a receiver window size of 1 frame. Assume also that no frames are lost in the transmission medium. For the scenario shown...
Assume that a station X wants to send 15 packets of data to station Y using TCP Tahoe. Assuming that:1) The size of each packet sent is 1000 Bytes (ignore all the headers from layers below).2) Station X chooses 43 as an initial sequence number.3) Station Y chooses 2 as an initial sequence number.4) The data of the first packet is included in the final packet of the handshake process.5) The sender window size is 5 packets.6) The receiver window...
(1) Assume that a station X wants to send 15 packets of data to station Y using TCP Tahoe. Assuming that: 1) The size of each packet sent is 1000 Bytes (ignore all the headers from layers below). 2) Station X chooses 43 as an initial sequence number. 3) Station Y chooses 2 as an initial sequence number. 4) The data of the first packet is included in the final packet of the handshake process. 5) The sender window size...
Q1) Assume that a station X wants to send 15 packets of data to station Y using TCP Tahoe. Assuming that: 1)The size of each packet sent is 1000 Bytes (ignore all the headers from layers below). 2)Station X chooses 43 as an initial sequence number. 3)Station Y chooses 2 as an initial sequence number. 4)The data of the first packet is included in the final packet of the handshake process. 5)The sender window size is 5 packets. 6)The receiver...
(a) A data link with a 1 Gigabits/sec capacity is used to transmit packets made up of 1400 bytes of data and 100 bytes of protocol control information. Each packet is acknowledged by a short frame of size 150 bytes. The propagation speed in the transmission medium is 200,000 km/sec. Consider the buffering and processing time in the nodes to be negligible. A node A communicates with a node B, with a distance between nodes A and B of 16...
Consider a simplified actual TCP senderreceiver, described as follows: .Upon a loss (timeout or triple-duplicate ACKs), the sender o transmits the oldest unACKed packet (whose sequence number Base) o restarts the timer Upon receiving an ACK with a Sequence #y > Base. o it considers all packets with sequence numbers s y as ACKed (cumulative ACK) o Sets Base to the sequence number of the packet immediately after the packet whose sequence number is y o Restarts the timer ....