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Circuit Switching
Consider the transfer of a file in a circuit switched network. The file is...
Q2.3. (15%) Consider sending a file of F bytes over a path of Q links. Each...
Q2.3. (15%) Consider sending a file of F bytes over a path of Q links. Each link transmits at R bps. The network is lightly loaded so that there are no queuing delays at any link. The propagation delay on each link is Tp seconds on average. 1. Suppose the network is a packet-switched virtual-circuit network. Assume the VC setup time is Ts seconds. Suppose the sending layers add a total of h bits of header to the file, and...
03) Consider sending a file size of O bits over a path of 2 links. Suppose...
03) Consider sending a file size of O bits over a path of 2 links. Suppose the first link can transmit at R1 bit/sec (bps) and the second link can transmit R2 bits/sec (bps) (R1+ R2), both links have a propagation delay of tp, network lightly loaded (no queuing delays), and each link's maximum frame size, S bits, is same (S < O and number of segments is integer and headers are negligible.). (a) How long does it take to...
Consider sending a large file of F bits from Host A to Host B. There are...
Consider sending a large file of F bits from Host A to Host B. There are m links (and m-1 switches) between A and B, and the links are uncongested (that is, no queueing delays). Host A segments the file into segments of S bits each and adds H bits of header to each segment, forming packets of L = H + S bits. Each link has a transmission rate of R bps. Find the value of S that minimizes...
2. (10 pts.) Consider sending a large file of F bits from Host A to Host...
2. (10 pts.) Consider sending a large file of F bits from Host A to Host B. There are six links (and five switches) between A and B, and the links are not congested (that is, no queueing delays). Host A segments the file into segments of S bits each and adds 30 bits of header to each segment, forming packets of L 30+S bits. Each link has a transmission rate of R bps. Find the value of S that...
Consider a packet switching network. Packets from origin host travel over H hops to reach the...
Consider a packet switching network. Packets from origin host travel over H hops to reach the destination host. Supppose that the origin host wants to transmit a message that is M bits long. The bit rate of all links is C (bits/sec), and the propoagation delay over every link is D seconds. The message will be broken into packets. Suppose that each packet has a constant overhead of V bits. Let L be the fixed payload of each packet. Thus,...
can you answer these questions? 1)What advantage does a packet-switched network have over a circuit-switched network?...
can you answer these questions? 1)What advantage does a packet-switched network have over a circuit-switched network? a. It must establish a connection (a circuit) between the sender and the receiver b. It is subject to variable delays and possible information loss c. It guarantees a constant transmission rate and a high quality for each connection d. It allows better sharing of resources 2)Which of the following is not a typical use of...
Consider sending a large file of Z bits from Host A to Host B. There are four links (and three sw...
Consider sending a large file of Z bits from Host A to Host B. There are four links (and three switches) between A and B, and the links are uncongested (that is, no queuing delays). Host A segments the file segments of S bits each and adds 60 bits of header to each segment, forming packets of L 60S bits. Each link has a transmitting rte of R bps. Propagation delay is ρ microseconds kilometer. Consider the following distances: A...
1. What is end-system? List example of end-systems 2. Define network edge and network core 3....
1. What is end-system? List example of end-systems 2. Define network edge and network core 3. Explain Packet-switching 4. List five tasks that a computer network layer can perform Is it possible that one (or more) of these tasks could be performed by two (or more) layers? 5. This elementary problem begins to explore propagation delay and transmission delay, two central concepts in data networking. Consider two hosts, A and B, connected by a single link of rate R bps....
10. Suppose there is exactly one packet switch between a sending host and a receiving host....
10. Suppose there is exactly one packet switch between a sending host and a receiving host. The transmission rates between the sending host and the switch and between the switch and the receiving host are R1 and R2, respectively. Assuming that the switch uses store-and-forward packet switching, what is the total end-to- end delay to send a packet of length L? (Ignore queuing, propagation delay, and processing delay.) 11. Draw a sketch of computers and network routers and links, to...
help with computer network questions 1. What is the difference between circuit switching and packet switching?...
help with computer network questions 1. What is the difference between circuit switching and packet switching? 2. What are the different layers in today’s Internet? Why do we create layers? 3. Suppose there is a 10 Mbps microwave link between a geostationary satellite and its base station on Earth. Every minute the satellite takes a digital photo and sends it to the base station. Assume a propagation speed of 2.4 * 10^8 meters/sec. a. What is the propagation delay of...
Q2.3. (15%) Consider sending a file of F bytes over a path of Q links. Each link transmits at R bps. The network is lightly loaded so that there are no queuing delays at any link. The propagation delay on each link is Tp seconds on average. 1. Suppose the network is a packet-switched virtual-circuit network. Assume the VC setup time is Ts seconds. Suppose the sending layers add a total of h bits of header to the file, and...
03) Consider sending a file size of O bits over a path of 2 links. Suppose the first link can transmit at R1 bit/sec (bps) and the second link can transmit R2 bits/sec (bps) (R1+ R2), both links have a propagation delay of tp, network lightly loaded (no queuing delays), and each link's maximum frame size, S bits, is same (S < O and number of segments is integer and headers are negligible.). (a) How long does it take to...
2. (10 pts.) Consider sending a large file of F bits from Host A to Host B. There are six links (and five switches) between A and B, and the links are not congested (that is, no queueing delays). Host A segments the file into segments of S bits each and adds 30 bits of header to each segment, forming packets of L 30+S bits. Each link has a transmission rate of R bps. Find the value of S that...
Consider sending a large file of Z bits from Host A to Host B. There are four links (and three switches) between A and B, and the links are uncongested (that is, no queuing delays). Host A segments the file segments of S bits each and adds 60 bits of header to each segment, forming packets of L 60S bits. Each link has a transmitting rte of R bps. Propagation delay is ρ microseconds kilometer. Consider the following distances: A...
1. What is end-system? List example of end-systems 2. Define network edge and network core 3. Explain Packet-switching 4. List five tasks that a computer network layer can perform Is it possible that one (or more) of these tasks could be performed by two (or more) layers? 5. This elementary problem begins to explore propagation delay and transmission delay, two central concepts in data networking. Consider two hosts, A and B, connected by a single link of rate R bps....
10. Suppose there is exactly one packet switch between a sending host and a receiving host. The transmission rates between the sending host and the switch and between the switch and the receiving host are R1 and R2, respectively. Assuming that the switch uses store-and-forward packet switching, what is the total end-to- end delay to send a packet of length L? (Ignore queuing, propagation delay, and processing delay.) 11. Draw a sketch of computers and network routers and links, to...
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