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- For the given network topology find the best path to go from A to K using flow based routing algorithm knowing that the mean packet size is 800 bits and the mean number of arrivals in packets/sec listed in the table.Consider a network with 4 links between two hosts where the maximum allowable packet size is 1000 bits; each link has a transmission rate of 2000 bits per second, except the second link has a transmission rate of 1000 bits per second. How long does it take to send 6000 bits from one host to the other? You may ignore propogation delay, assume there is no other traffic on the network, and assume that no routers drop packets due to queue length. Round your answer to two decimal places.Consider the GBN protocol with a sender window size of 4 and a sequence number rangeof 1,024. Suppose that at time t, the next in-order packet that the receiver is expecting has asequence number of k. Assume that the medium does not reorder messages. Answer thefollowing questions: What are the possible sets of sequence numbers inside the sender’s window at time t? Justify your answer.
- Consider the GBN protocol with a sender window size of 4 and a sequence number rangeof 1,024. Suppose that at time t, the next in-order packet that the receiver is expecting has asequence number of k. Assume that the medium does not reorder messages. Answer thefollowing questions: What are all possible values of the ACK field in all possible messages currently propagating back to the sender at time t? Justify your answer.0. AS1 has the following routing table, draw the network of AS’s that these paths imply: prefix path P1 AS2 P2 AS4 AS5 AS3 P1 AS4 AS2 P2 AS5 AS3 P1 AS5 AS2 Assuming AS 1 accepted all the paths advertised to it, what paths does AS4 advertise to AS1? What AS is P1 in? What about P2? AS5 no longer wants to forward packets destined for prefix P1 on behalf of AS1, but it is ok forwarding prefix P2, how would it change the paths it advertises to AS1? If AS1 sends a packet to AS4 destined for P1, what path will it take? How do we know AS4 won’t forward it back to AS1? If AS1 gets the following advertisement from AS4, P1 AS4 AS1 AS2 how would it update its table? Why?0. AS1 has the following routing table, draw the network of AS’s that these paths imply: prefix path P1 AS2 P2 AS4 AS5 AS3 P1 AS4 AS2 P2 AS5 AS3 P1 AS5 AS2 Assuming AS 1 accepted all the paths advertised to it, what paths does AS4 advertise to AS1? What AS is P1 in? What about P2? AS5 no longer wants to forward packets destined for prefix P1 on behalf of AS1, but it is ok forwarding prefix P2, how would it change the paths it advertises to AS1? If AS1 sends a packet to AS4 destined for P1, what path will it take? How do we know AS4 won’t forward it back to AS1? If AS1 gets the following advertisement from AS4, P1 AS4 AS1 AS2 how would it update its table? Why? NOTE: I would appreciate it if the solutions of the paths were hand-drawn so I can visualize it better.
- This elementary problem begins to explore propagation delay andtransmission delay, two central concepts in data networking. Consider two hosts, Aand B, connected by a single link of rate R bps. Suppose that the two hosts areseparated by m meters, and suppose the propagation speed along the link is smeters/sec. Host A is to send a packet of size L bits to Host B. d. Suppose Host A begins to transmit the packet at time t=0 . At time t= ?????? ,where is the last bit of the packet? e. Suppose ????? is greater than ?????? . At time t= ??????, where is the first bit of the packet?f. Suppose ????? is less than ??????. At time t= ?????? , where is the first bit of thepacket?In packet matching, one Echo packet may be the response for three request packets (Pattern: S1, S2, S3, E1), which of the following is ideal to represent the length of the connection chain? Question options: The average RTT of the three packets RTT betwee E1 and S1 RTT betwee E1 and S2 RTT betwee E1 and S3 The following figure shows the RTTs of all the packets collected from the beginning to the end of a connection chain, where Y axis represents the value of RTTs, and X axis represents the number of Send packets. How many hosts are compromised from the detecting host (also called sensor, count this host) in this case? Question options: 2 4 6 7For example, suppose your kid uses the school's wireless LAN to access the web by typing in www.google.com. Keep going with this hypothetical situation. (Or, you know, any other website that occurs to you right now) For clarity's sake, list the available routing protocols in the order in which they should be used.
- In this case, we will use the GBN protocol with a sender window size of 4 and a sequence number range of 1,024. Assume that, at time t, the next in-order packet that the receiver is awaiting has a sequence number of k, and that the receiver is expecting it. Assume that the medium does not rearrange the messages sent to and from it. Please respond to the following questions: What are the potential sequence numbers that could be contained within the sender's window at time t?Can someone help me with this question please? ASAP??!!! 6. Consider a packet of length L which begins at end system A and travels over three links to a destination end system. These three links are connected by two packet switches. Let di, si, and Ri denote the length, propagation speed, and the transmission rate of link i, for i = 1, 2, 3. The packet switch delays each packet by dproc. a. Assuming no queuing delays, in terms of di, si, Ri, (i = 1,2,3), and L, what is the total end-to-end delay for the packet? (10 Points) b. Suppose now the packet is 1,500 bytes, the propagation speed on all three links is 2.5×108 m/s, the transmission rates of all three links are 2 Mbps, the packet switch processing delay is 3 msec, the length of the first link is 5,000 km, the length of the second link is 4,000 km, and the length of the last link is 1,000 km. For these values, what is the end-to-end delay? (15 Points)In newer implementations, repeat ARP queries about a timed out entry are first sent unicast, in order to reduce broadcast traffic. What would have to happen to create a situation where the repeated unicast query for a given IP address fails, but a follow-up broadcast query for that same IP address succeeds?