EBK COMPUTER NETWORKING
7th Edition
ISBN: 8220102955479
Author: Ross
Publisher: PEARSON
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Chapter 1, Problem R18RQ
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- The time taken by the data packet of length 1000 bytes with link distance of 2500 km, speed of 2.5×108 meter/second (m/s) and transmission rate of 2 Mbps is 10 m/s.
- The time taken by the data packet of length L over di...
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How long does it take a packet of length 1,000 bytes to propagate over a link of distance 5,000 km, propagation speed of 2.5 x 108 m/s, transmission rate 1 Mbps? 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?
How long does it take a packet of length 1,000 bytes to propagate over a link of distance 2,500 km, propagation speed 25.125 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?
Consider two hosts S and R connected directly
by a link. A link has a transmission speed of 107
bits/sec. It uses data packets of size 400 bytes.
Data needed to transmitted is 400 bytes. Length
of the link is 600 km and the propagation speed
are 3 × 108 meter per second. T is the
transmission delay and P is the propagation
delay. The propagation delay in millisecond and
transmission delay in microsecond respectively
are
Chapter 1 Solutions
EBK COMPUTER NETWORKING
Ch. 1 - What is the difference between a host and an end...Ch. 1 - The word protocol is often used to describe...Ch. 1 - Why are standards important for protocols?Ch. 1 - Prob. R4RQCh. 1 - Prob. R5RQCh. 1 - Prob. R6RQCh. 1 - Prob. R7RQCh. 1 - Prob. R8RQCh. 1 - Prob. R9RQCh. 1 - Prob. R10RQ
Ch. 1 - Prob. R11RQCh. 1 - What advantage does a circuit-switched network...Ch. 1 - Prob. R13RQCh. 1 - Prob. R14RQCh. 1 - Prob. R15RQCh. 1 - Prob. R16RQCh. 1 - Prob. R17RQCh. 1 - Prob. R18RQCh. 1 - Suppose Host A wants to send a large file to Host...Ch. 1 - Prob. R20RQCh. 1 - Prob. R21RQCh. 1 - Prob. R22RQCh. 1 - What are the five layers in the Internet protocol...Ch. 1 - Prob. R24RQCh. 1 - Prob. R25RQCh. 1 - Prob. R26RQCh. 1 - Prob. R27RQCh. 1 - Prob. R28RQCh. 1 - Equation 1.1 gives a formula for the end-to-end...Ch. 1 - Prob. P3PCh. 1 - Prob. P4PCh. 1 - Prob. P5PCh. 1 - This elementary problem begins to explore...Ch. 1 - Prob. P7PCh. 1 - Suppose users share a 3 Mbps link. Also suppose...Ch. 1 - Prob. P9PCh. 1 - Prob. P10PCh. 1 - In the above problem, suppose R1 = R2 = R3 = R and...Ch. 1 - Prob. P13PCh. 1 - Consider the queuing delay in a router buffer. Let...Ch. 1 - Prob. P15PCh. 1 - Prob. P16PCh. 1 - Prob. P17PCh. 1 - Prob. P20PCh. 1 - Prob. P21PCh. 1 - Prob. P22PCh. 1 - Prob. P23PCh. 1 - Prob. P24PCh. 1 - Prob. P25PCh. 1 - Prob. P26PCh. 1 - Prob. P27PCh. 1 - Prob. P28PCh. 1 - Prob. P29PCh. 1 - Prob. P30PCh. 1 - Prob. P31PCh. 1 - Prob. P32PCh. 1 - Prob. P33PCh. 1 - Prob. P34P
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- 1) How long does it take a packet of length 1,000 bytes to propagate over a link of distance 5,000 km, propagation speed of 2.5 x 108 m/s, transmission rate 1 Mbps? 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? 2) suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is 2.5 x 108 meters/sec. a. Calculate the bandwidth-delay product, R x dprop.b. Consider sending a file of 800, 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 will be in the link at any given time?c. Provide an interpretation of the bandwidth-delay product? 3) Consider sending a packet from a source host to a destination host over a fixed route. List the…arrow_forwardConsider two systems P and Q connected via a router R with the bandwidth of 2 Gbps. The length of the packet is 1000 bytes. The propagation delay between P and Q is 200 microseconds. The distance between the P and R is 10 km while the distance between R and Q is 5 km. The propagation speed in meter per second if each link is having the same 10³ km/s? propagation speed isarrow_forwardConsider two hosts, A and B that are connected by a transmissions link of2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and the length of the link is 100Km. a. What is the propagation delay from A to B, that is the amount of time from when the first bit of the packet is transmitted at A, until it is received at B? b. What is the transmission time of the packet at A (the time from when the first bit of the packet is sent into the wire and the time at which the last bit is sent into the wire). c. Suppose now that that length of the link is doubled. What is the propagation delay from A to B now and what is the transmission time? d. Now suppose that node C is connected to node B also by a 2 Mbps, 100 Km link. How long does it take from when the first bit is transmitted by A to when the last bit is received at C, assuming B operates in a store-and -forward manner?arrow_forward
- What are the propagation time and the transmission time for a 5-MB (megabyte) message (an image) if the bandwidth of the network is 1 Mbps? Assume that the distance between the sender and the receiver is 12,000 km and each word requires 8-bit with light travels at 2.4 * 108 m/sarrow_forwardLet a denote the rate of packets arriving at a link in packets/sec, and let μ denote the link’s transmission rate in packets/sec. Based on the formula for the total delay (i.e., the queuing delay plus the transmission delay) derived in the previous problem, derive a formula for the total delay in terms of a and μ.arrow_forwardHow long does it take a packet of size 10 KB to travel over three links (connection) with a transmission rate of 5 Mbps? These three links are connected by two routers. Assume there are no other delays.arrow_forward
- Assume that the propagation speed in a coaxial cable is 2 ∙108 m/s a. Packets are transmitted using the ABP (alternate bit protocol) over a full-duplex 5-km coaxial cable with a 5 Mbps transmission rate. The packets and ACKs are 1500 bits long. The transmitter and receiver use a CRC chip and their processing time is negligible. How many packets are transmitted every second when there is no transmission error? b. Five transmission lines identical to the one discussed in a) are connected in series. A buffer is used at each connection between the links to store packets as required. How many packets will go through the five lines every second when there are no transmission errors? Now assume that a packet or its acknowledgement is corrupted on any given link with probability p. What is the new packet transmission rate through the five links? Comment. Assume the processing delays and queuing delays for both ends are negligible.arrow_forwardConsider sending real-time data from Host A to Host B over a packet-switched network. Host A takes an 8-bit measurement every millisecond, and Host A collects these into 64-byte packets. There is one link between Hosts A and B; its transmission rate is 5 Mbps, its propagation delay is 2 × 108 meters/sec, and its length is 3 km. As soon as Host A gathers a packet, it sends the packet to Host B. How much time elapses from the time that Host A begins to take the first measurement in a packet until the entire packet reaches Host B?arrow_forwardConsider a point to point link 50 km in length. At what bandwidth (Kilo Bytes/second), would propagation delay (at a speed 2 x 108 meters/second) equal transmit delay for 100 byte packets?arrow_forward
- Consider a point to point link 50 km in length. At what bandwidth (in Kbps) ,would propagation delay (at a speed 2 x 108 meters/second) equal transmit delay for 100 byte packets.arrow_forwardA link has a transmission speed of 106 bits/sec. It uses data packets of size 1000 bytes each. Assume that the acknowledgment has negligible transmission delay, and that its propagation delay is the same as the data propagation delay. Also assume that the processing delays at nodes are negligible. The efficiency of the stop- and-wait protocol in this setup is exactly 25%. The value of the one-way propagation delay (in milliseconds) isarrow_forwardA link has a transmission speed of 1010 bits/sec. It uses data packets of size 2000 bytes each. The efficiency of the stop-and-wait protocol in this setup is exactly 30%. Determine the value of the one-way propagation delay in milliseconds. Assume that the acknowledgement has negligibletransmission delay, and its propagation delay is the same as the data propagation delay. Consider the same transmission speed and packet size for Go back-N protocol with window size 8 and find the channel utilization.arrow_forward
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