Data Communications and Computer NetworksQuiz 8Name:________________________________ ID:__________________ Grade:______________Provide a short definition (a phrase or two) for each of the following terms:1. Network-assisted congestion control2. CongWin:3. AIMD:Data Communications and Computer NetworksQuiz 8TCP Congestion ControlYou are given the following description of events that occur in a TCP connection. Using the chartprovided below, plot the size of the congestion window size versus transmission round. Also, indicate the value of the threshold if it changes. Recall that TCP ensures congestion control with Slow Start, AIMD, and the use of a threshold. Also, recall the refinements to the TCP congestion control mechanism that take into account the different ways in which loss is detected.The events are listed in the order in which they occurred:TransmissionroundEvent Threshold value1 TCP connection established and datatransfer begins (Don’t plot theconnection establishment phase – startwith the segment transfer at time 1MSS)305 Loss event detected by duplicate ACKs18 Loss event detected by timeout eventPlot the graph until 30 transmission rounds.TCP Congestion controlTransmission roundData Communications and Computer NetworksQuiz 84. What is the difference between a virtual circuit network and a datagram network?5. Answer the following question based on the table in the slides for Day 08:A connection request arrives at the router from port 3 with an incoming VC # of 35. The router picks output port 2 to forward the packet. What should be the value of the outgoingVC #?6. Given the following forwarding table, for the packets with the provided destination addresses, determine which interfaces will be used to forward the packets?a. Packet with destination address: 11001000 00010111 00010110 10100001 b. Packet with destination address: 11001000 00010111 00011000 10101010Data Communications and Computer NetworksQuiz
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