Suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a...
Suppose two hosts, A and B, are separated by 20,000 kilometers
and are connected by a direct link of R = 2 Gbps. Suppose the
propagation speed over the link is 2 · 10 8 m/s meters/sec.
a. Calculate the bandwidth-delay product, R dprop.
b. Consider sending a file of 2000,000 bits from Host A to Host B.
Suppose the file is sent continuously as one big message. What is
the maximum number of bits that will be in the link at any given
time?
c. What is the width (in meters) of a bit in the link?
Homework Answers
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Suppose two hosts, A and B, are separated by 20,000 kilometers
and are connected by a...
Suppose two hosts, Host A and B, are separated by 10,000 kilometers and are connected by...
Suppose two hosts, Host A and B, are separated by 10,000 kilometers and are connected by a direct link of R-1 Mbps. Suppose the propagation speed over the link is 2.5 10 meters/sec. The propagation delay of the link is dprop (a) Calculate the bandwidth-delay product, R dpop (b) Consider sending a file of 400,000 bits from Host A to Host B. Suppose the file is sent continuously as one large message. What is the maximum number of bits that...
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P6. This elementary problem begins to explore propagation delay and transmis- sion delay, two central concepts...
P6. This elementary problem begins to explore propagation delay and transmis- sion delay, two central concepts in data networking. Consider two hosts, A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to Host B a. Express the propagation delay, dprops in terms of m and...
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Questions: 1. (15pt.) Suppose that a file of 10 bytes is transferred between two hosts, and packet size is 10 bytes. Assume packets are sent back-to-back with no overhead of encapsulation. Calculate the file transmission latency (from first bit sent to last bit received) for (a) Single store-and-forward 1-Gbps switch is in the path, each link introduces a propagation delay of lus, and either queucing or processing delay can be omitted (b) Same as (a) but with three switches; (e)...
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....
A and B which are separated by 920 Km are directly connected using some type of...
A and B which are separated by 920 Km are directly connected using some type of physical link. A is sending packets to B with a packet size of 8000 bits at a bit rate of 2 Mbps. If the first bit transmitted by A has just reached B when the last bit is being transmitted by A, calculate the velocity of propagation in the medium in two different ways: (i) Using the concept of delay-bandwidth product (ii) Using the...
Hosts A and B communicate through a store-and-forward switch. The links between the hosts and the...
Hosts A and B communicate through a store-and-forward switch. The links between the hosts and the switch have a transmission rate of R bits/sec. What is the total delay for sending a packet of L bits from host A to host B (i.e., from the time A starts transmitting to the time B has the packet).
Hosts A and B are each connected to a switch S via 1-Gbps links as below....
Hosts A and B are each connected to a switch S via 1-Gbps links as below. The propagation delay on each link is 20 μs. S is a store-and-forward device; it begins retransmitting a received packet 35μs after it has finished receiving it. Calculate the total time required to transmit 10,000 bits from A to B in the following two cases: When all the 10,000 bits are transmitted in a single packet? When the 10,000 bits are transmitted in two...
3. Suppose there is exactly one packet switch (or router) between a sending host and a...
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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...
Suppose two hosts, Host A and B, are separated by 10,000 kilometers and are connected by a direct link of R-1 Mbps. Suppose the propagation speed over the link is 2.5 10 meters/sec. The propagation delay of the link is dprop (a) Calculate the bandwidth-delay product, R dpop (b) Consider sending a file of 400,000 bits from Host A to Host B. Suppose the file is sent continuously as one large message. What is the maximum number of bits that...
P6. This elementary problem begins to explore propagation delay and transmis- sion delay, two central concepts in data networking. Consider two hosts, A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to Host B a. Express the propagation delay, dprops in terms of m and...
Questions: 1. (15pt.) Suppose that a file of 10 bytes is transferred between two hosts, and packet size is 10 bytes. Assume packets are sent back-to-back with no overhead of encapsulation. Calculate the file transmission latency (from first bit sent to last bit received) for (a) Single store-and-forward 1-Gbps switch is in the path, each link introduces a propagation delay of lus, and either queucing or processing delay can be omitted (b) Same as (a) but with three switches; (e)...
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Hosts A and B communicate through a store-and-forward switch. The links between the hosts and the switch have a transmission rate of R bits/sec. What is the total delay for sending a packet of L bits from host A to host B (i.e., from the time A starts transmitting to the time B has the packet).
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