QUESTION 9:Assume the usage of Go-Back-7 (N = 7) ARQ sliding window protocol for flowand error control of noisy channels. Answer the following questions.a.(i)Identify the number of bits used for sequence number field in the headerframe(ii)Identify the maximum 'Send Window' size and Receive Window' size.b.Assume that a network is using Carrier Sense Multiple Access with CollisionDetection (CSMA/CD) as Medium Access Control protocol and it has a bandwidth of100 Mbps. Maximum propagation time (Tp) is given as 5 microseconds. Calculate thefollowing:(i)Minimum Frame Transmission Time (in seconds) required for detecting collisions(ii)Minimum size of the frame required (in bytes) to detect collisions.

Here in this multiple question we have given a sliding window (GB7) .and we have asked to find no of…

Answered: QUESTION 9: Assume the usage of…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Problem 5: Draw a Mealy FSM to model a LAN adapter. Serial data packets entering the FSM are analyzed. The start of a packet is indicated by the arrival of two consecutive 0's on the input line . The next three bits are the machine address. The targeted addresses are 100 or 110 where an output = 1 is generated. Any other addresses produce a zero at the output. A separate reset mechanism will put the machine in the initial state (i.e, you should never return to the initial state in your design).
(c) Sender A sends the word A+ to Receiver B. By using Cyclic Redundancy Check (CRC), with divisor 1010, demonstrate clearly how error detection process will take place in data link layer. (Note: Please introduce an error in your received frame to demonstrate the error and error-free process). (Refer Appendix A to solve).
Problem Five Consider a serial port operating with a baud rate of 10,000 bits per second. Draw the waveform occurring at the UOTX output (voltage levels are +3.3 and 0) when the ASCII 'a' (0x61) is transmitted on UARTO. The protocol is I start, 8 data and 1 stop bit. UARTO is initially idle, and the software writes the Ox61 to UARTO DR R at time=0. Show the UOTx line before and after the frame, assuming the channel is idle before and after the frame.
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 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?
Consider TDM-based circuit switching with 8000 frames per second and 32 time slots per frame. During each time slot 8 bits are sent. What is the shortest time possible (in seconds) to transmit a 1 Mbyte file over the given link?
Design a channel coding scheme to detect two or less errors for the message source (00, 10, 01, 11). Can you find one of the best schemes in terms of information transmission speed?
I A channel has a frequency range between 3 KHz and 14 KHz. The SNR in this channel is 25 dB. Find the maximum Bit rate of the channel and the Signal levels. [3 marks] For a bit stream "0 1 1 0 0 1 0 1", sketch the waveforms for (i) NRZ-I - (Assume the initial level at time zero is Low) (ii) NRZ-L - (assume 0 as High and 1 as Low) (iii) RZ Encoding – (Assume the initial level at time zero is Low) [3 marks]
Consider a full-duplex 256 Kbps satellite link with a 240 millisecond end-to-end delay. The data frames carry a useful payload of size 12,000 bits. Assume that both ACK and data frames have 320 bits of header information, and that ACK frames carry no data. What is the effective data throughput When using Stop and Wait?
Given the maximum lifetime of a segment is 30 sec and link capacity is 500Mbps, find the no. of bits required to avoid wrap around during this time? Need correct solution , else downvoted.
A 4480-octet datagram is to be transmitted and needs to be fragmented because it will pass through an Ethernet with a maximum payload of 1500 octets. Show the Total Length, More Flag, and Fragment Offset values in each of the resulting fragments.
a) In one of the conferences held in North America, to investigate performance of a radio network, it came to light that best way to look at seem to allow several bits for each packet and the other have time interval between two characters which are not fixed. Discuss these two mechanisms in question.
Question: Find the Global Unicast Address if EUI-64 is used to generate the interface identifier and the Ethernet physical address is (A5-C9-23-14-00-02) and the Global unicast prefix is 2000:0000:0000:0001, then represent the generated GUA in compressed format.

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