What are the propagation time and the transmission time for an 8-Mbyte message (an image) if the bandwidth of the network is 1 Mbps? Assume that the distance between the sender and the receiver is 14,000 km and that light travels at 2.4 x 108 m/s. (7) (ii) Discuss any two network impairments? (3)
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- 1.) There is a data that has a file size of 26Mb with an ethernet overhead of 8 Mb. Find the Total amount of data to be transferred and Throughput, if there is an amount of data loss of 15 Mbps due to errors and acknowledgments. 2.) Assume that the distance between the sender and the receiver is 5000 km and that light travels at 1.7 x 108 m/s. What is the propagation time and the transmission time for a 1.44 MB message if the bandwidth of the network is 3 Mbps? 3.) An analog signal has a bit rate of 36000 bps and a baud rate of 1200 baud. How many data elements are carried by each signal element? How many signal elements do we need?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/s1. There is a data that has a file size of 26MB with an ethernet overhead of 8 Mb. Find the Total amount of data to be transferred and Throughput, if there is an amount of data loss of 15 Mbps due to errors and acknowledgments. 2. Assume that the distance vetween the sender and the receiver is 5000 km and that light travels at 1.7 x 108 m/s. What is the propagation time and the transmission time for a 1.44 MB message if the bandwidth of the network is 3 Mbps? 3. An analog signal has a bit rate of 36000 bps and a baud rate of 1200 baud. How many data elements are carried by each signal element? How many signal elements do we need?
- 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.Unless specified otherwise, use the free space propagation speed of light 3x108 m/s to calculate the propagation delay. For numerical calculations, the results must show the appropriate unit. Show a complete solution for each problem3. Consider a digital multimedia transmission system. Separate audio and video coders are used to encode these signals. Audio and video bits are packed in packets together and transmitted over a transmission link. Each packet is 2,000 bytes long, which includes a 48-byte header. The system generates one packet every 40 ms. Calculate the following values:a. The minimum data transmission rate required to support the above system.b. The minimum signal-to-noise ratio (SNR) in dB required to transmit the above audio and video information. Assume a 400-kHz transmission channel bandwidth is used.c. The end-to-end packet delay over a 50-km link, using answer in Part a).2. A path in a digital circuit-switched network has a data rate of 1 Mbps. The exchange of 1000 bits is required for the setup and teardown phases. The distance between two parties is 5000 km. Answer the following questions if the propagation speed is 2 X 10° m: a. What is the total delay if 1000 bits of data are exchanged during the data transfer phase? b. What is the total delay if 100,000 bits of data are exchanged during the data transfer phase? c. What is the total delay if 1,000,000 bits of data are exchanged during the data transfer phase? d. Find the delay per 1000 bits of data for each of the above cases and compare them. What can you infer?
- Suppose that data are stored on 8.54-gbyte single-sided, double-layer dvds that weigh 15 g each. suppose that an eurostar rail service train, london to paris via chunnel, carries 10 4 kg of these dvds. the great circle distance of the line is 640 km and the traveling time is 2 hours, 15 minutes. what is the data transmission rate in bits per second of this system?Consider that a 100 kbps data stream is to be transmitted on a telephone channel of BW=3.4 kHz and SNR=10 dB. Is the transmission free from ISI problem or not? Prove that. If it is not free, suggest and calculate the proper system modifications.Data Communication & Computer Network Suppose that Jon's and Jenny's computers are connected by an 8 Kbps link (note, 1 Kbps = 103 bps) that uses circuit switching and that Jon sent some number of bits to Jenny over the link. Suppose that circuit switching on the link connecting Jon’s and Jenny’s computers is implemented using Time Division Multiplexing (TDM), that a frame is 1 sec in duration, and that a frame consists of 16 slots. Jon is assigned one slot in every frame. Considering that it took 12 minutes for Jon to send all bits to Jenny, find how many bits were sent by Jon to Jenny.
- 4. Satellite Transmission. Suppose there is a 12 Mbps microwave link between a geostationary satellite and its base station on earth (the distance between the two is 36,000 km). Every minute the satellite takes a digital photo and sends it back to the base station. Assume a propagation speed of 2.5 x 10³ m/sec. a. What is the propagation delay, dprop, of the link (in seconds)? b. What is the bandwidth delay product, R x dprop? c. Let X denote the size of the photo. What is the minimum value of X, in bits, for the microwave link to be continuously transmitting?Frames of 1000 bits are sent over a 106 bps duplex link between two hosts. The propagation time is 25 ms. Frames are to be transmitted into this link to maximally pack them in transit (within the link). 1.1 What is the minimum number of bits (1) that will be required to represent the sequence numbers distinctly? Assume that no time gap needs to be given between transmission of two frames.A data communication has the following delays computed as follows: Transmission delay is 1 second. propagation celav is 10 micros second. processing delay is 1 millisecond queuing delay is 100 microsecond, what is the total delay? (a.) 1.111 sec. (b.) 1.0111 sec: c) 1,00111 sec: (d.) 1.000111 sec; (e) 1.0000111 sec Choose