Q4: Full the blank of the following sentences 1- If the destination of packets is at another system on the LAN, the destination address field contains of that system. 2- on the signal. 3- it is the time that required for packets to completely arrive from source to destination. is caused by the random motion of electrons within the media, it is unavoidable but usually relatively small compared to the signals.
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- Question 5: Suppose you attach a network monitor to observe the sequence of frames that travel over a link from sender A to receiver B. The problem is to deduce what protocols, if any, could have generated the observed sequence. The following diagrams depict a flow of frames, with their corresponding sequence numbers, from the sender (A). There may be traffic from B to A, which is not depicted in the diagram. A gap between adjacent frames implies passage of time with no transmission from the sender. Note that the x-axis is time, and not space. Justify your answer. A A A ● ● ● ● 1 5 ● 3 5 0 ● 0 0 1 1 1 ● Go-Back-N ● Selective Repeat 1 0 5 0 c) For Diagram 3, the protocol is not: Stop-and-Wait Time Diagram 1 2 Time a) For Diagram 1, the most likely protocol being used is: Stop-and-Wait ● Go-Back-N (if Go-Back-N, give the window size) Selective Repeat (if Selective Repeat, give the window size) Diagram 2 Time 3 Diagram 3 1 Time b) For Diagram 2, the most likely protocol being used is:…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 1,500 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?Suppose a computer sends a frame to another computer on a bus topology LAN. The physical destination address of the frame is corrupted during the transmission. What happens to the frame? How can the sender be informed about the situation? Suppose a computer sends a packet at the network layer to another computer somewhere in the Internet. The logical destination address of the packet is cor- rupted. What happens to the packet? How can the source computer be informed of the situation?
- Consider the Go-Back-N (GBN) and Selective Repeat (SR) protocols with a sender window size of 4 and a sequence number range of 1024. For each of these protocols, describe what happens for the following cases: The first packet in the sender window size is lost before reaching the destination. All transmitted packets reached the destination except the third one. Only the first and last packets in the sender window size reached the destination. Only the ACKs of the first and last packets, in the sender window size, reached the destination.It is possible for a series of packets to be sent from one host to another over the same connection. Please break down the time it takes for a single package to go from beginning to conclusion. Is it expected that one of the delays would last a certain period of time while the other delay's length will be more malleable?This question deals with the Poisson process and is formulated in terms of a subway station. It could as wellbe formulated in terms of a networking problem. A subway station where different train lines intersect is likeswitch/router in the communication network with the different train lines corresponding to what are calledLabelled Switched Paths (LSPs). As for the trains, you can think of them as packets or burst of packets. Onecan draw this analogy also in optical networks which forms the core of the Internet backbone. Two one-way subway lines, the A train line and the B train line, intersect at a transfer station, A trainsand B trains arrive at the station according to independently operating Poisson processes with rates λA =3 trains/hr and λB = 6 trains/hr. We assume that passenger boarding and un-boarding occurs almostinstantaneously. At a random time, Bart, a prospective passenger, arrives at the station, awaiting an A train.[Note that the superposition of two Poisson processes…
- Q4: Full the blanks of the following sentences 1- If the destination of packets is at another network, the destination address field contains the address of a router on the local destination 2- means packets may arrive a little earlier or later than expected is unwanted random signal added to the original signal. The time needed by each intermediate device to hold the packets before processing or passing it. 5- There is only one geostationary orbit, lying on the satellite orbiting at Bam) 3- to the time. and the /Band x BandwidIn protocol 6, the code for frame arrival has a section used for NAKs. This section is invoked if the incoming frame is a NAK and another condition is met. Give a scenario where the presence of this other condition is essential.Let the two host X and Y connected via a packet switch with 107 bits per second links. Switch is placed at 50 km from X. X and Y are located at 100 Kilometer apart also the propagation speed along the link is 2 × 108 m/s. The switch begins forwarding a packet after 0.1 milliseconds it receives the packet. If 1000 bytes of File are needed to be transmitted and each packet size is 500 bytes, the time elapsed between the transmission of the first bit of data and the reception of the last bit of the data in millisecond is
- Data Communication Suppose that Router A and Router B are connected via a 0.05 Mbps link (note, 1 Mbps = 106 bps) and that the link connecting the two routers has a length of 80 meters. Suppose that Router A is in the process oftransmitting a packet, and that there are 15 additional packets in the queue of the router, when a new packet arrives at Router A. Assume the followinga. Every packet consists of 15,000 bits.b. 5000 bits of the currently-being-transmitted packet has been transmitted by Router A when the new packet arrives at Router A. c. Propagation speed of a bit over the link connecting the two routersis 2 ? 103 meters/sec.d. Processing delay of a packet at a router takes 1 millisecond (i.e., 0.001 seconds).What is the total delay of the new packet in arriving at Router B, i.e., how long does it take the new packet to arrive at Router B from the time it arrived at Router A? In your solution, clearly identify all four delay components the new packet experiences.Computer A uses the Go-back-N ARQ protocol to send a 110 Mbytes file to computer B with a window size of 15. Given each frame carries 100K bytes data. How long does it take to send the whole file (the total time taken from A sending the first bit of the file until A receiving the last acknowledgment)? Given that the transmission rate of the link is 500 Mbps and the propagation time between A and B is 15ms. Assume no data or control frame is lost or damaged and ignore the overhead due to header and trailer.1. Build a Router network which has three Generic Routers and totally of Six networks in it. From each Router the required switch shall be connected through Fast Ethernet port and the switch is connected to two users. On the whole there are '6' networks in the configuration. Along with the network diagram do the packet transfer in simulation mode and write results for three different combinations.