For this question, let the packet size L = 1000 bytes, the propagation speed s = 2.5 x 108 m/s, the link distance d = 2000 km, and the transmission rate R = 10 Mbps. Assume that 1 Mbyte (megabyte) = 1 x 106 bytes (SI definition). Answer these questions:
(a) If 5 packets arrive simultaneously and the queue is initially empty, what is the average queuing delay for all 5 packets.
Average queuing delay =
where n is the number of packets, l is the size of packet and r is
the transmission rate
Average queuing delay = 4*1000/10^7
=4*10^-4 sec or 0.0004 sec
For this question, let the packet size L = 1000 bytes, the propagation speed s =...
How long does it take a packet of length 1000 bytes to propagate over a link of distance 2500 km, propagation speed 2.5 times 10^8 m/s, and transmission rate 2 Mbps More generally, how long does it take a packet of length L to propagate over a link of distance d, propagation speed s, and transmission rate R bps? Does this delay depend on packet length? Does this delay depend on transmission rate?
1. 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. Assuming no queuing delays, in terms of di, si, and Ri, (i=1,2,3), and L, what is the total end-to-end delay for...
How long does it take a packet of 500 bytes length to propagate over a link of distance 1,500 km, propagation speed 2.5 x 10^8 m/s, and transmission rate 5 Mbps? More generally, how long does it take a packet of length L to propagate over a link of distance d, propagation speed s, and transmission rate R bps? Does this delay depend on packet length? Does this delay depend on transmission rate? Explain your choices.
Note: b denotes bits and B denotes Bytes (1 Byte = 8 bits). Consider a packet of length L, which begins at source and travels over seven links to a destination. These links are connected through six routers. Let di, si, and Ri denote the length, propagation speed, and the transmission rate of link i, for i = 1 to 7. The processing delay at each router is d-proc. The queuing delay at each router is d-que. What is the...
3. Suppose there is exactly one packet switch (or router) 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 = 1Mbps and R2 = 2Mbps, 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 18000bits? Assume that the propagation speed is 2 * 108 meters/sec, the distance between source...
Note: b denotes bits and B denotes Bytes (1 Byte 8 bits) Question 1: 32 points: (16)+(16) Source Destination Consider a packet of length L, which begins at source and travels over seven links to a destination. These links are connected through six routers. Let di, si, and Ri denote the length, propagation speed, and the transmission rate of link i, for i 1 to 7. The processing delay at each router is d-proc. The queuing delay at each router...
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Instruction: Use the free space propagation speed of light 3x10 m/s to calculate the propagation delay. For numerical calculations; result must show appropriate unit. Show complete solution of each problem in your submitted document 1. Consider a two hop network shown in figure 1. Node A sends data packets to the server via the...
QUESTION 1 "A single router is transmitting packets, each of length L bits, over a single link with transmission rate R Mbps to another router at the other end of the link. Suppose that the packet length is L= 12000 bits, and that the link transmission rate along the link to router on the right is R = 1000 Mbps. What is the maximum number of packets per second that can be transmitted by the link (use a whole number)?"...
Given three packets of size 1500 bytes each are ready inside Computer 1 to be transmitted onto Link 1. Computer 1 has zero processing delay. Assume each router has zero queuing and zero processing delay. Link 1 is a 10 Mbit/sec link and 5000 km long. Link 2 is 100 Mbits/sec and is 5000 km long. Link 3 is 1000 Mbits/sec and is 5000 km long. Propagation speed is 2 × 10 8 m/s. Assume a router has to receive...
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)...