II. The figure below shows synchronous TDM, the data rate for each input connection is 1 Mbps. If 1 bit at a ime is multiplexed, Find (a) the input bit duration, (b) the output bit duration, (c) the output bit rate, and (d) the 1. putput frame rate. 1 Mbps Frames ... I Mbps 0no100011101 0001 0101 1. MUX ... I Mbps I Mbps ...

II. The figure below shows synchronous TDM, the data rate for each input connection is 1 Mbps. If 1 bit at a ime is multiplexed, Find (a) the input bit duration, (b) the output bit duration, (c) the output bit rate, and (d) the 1. putput frame rate. 1 Mbps Frames ... I Mbps 0no100011101 0001 0101 1. MUX ... I Mbps I Mbps ...

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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10. For a 10 Mbps data link using 12,000-bit frames, and assuming that electrical signals propagate at 2.5 x 108 m/s: a. How long does it take to introduce a single frame onto the link? b. How long does it take for the trailing edge of the frame to travel 1,620 km? c. What is the total transmission time of this frame, from start to finish?
800 b frames are sent over a 500 kbps communication channel. The communication channel usesGBN protocol with 3 bit sequence numbers. The propagation delay is 20 ms. Confirmationsare of size 500 b. Headers and control information are negligible in size.What is the maximum efficiency of this channel?
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?
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 total transmission rate of the whole link in kbps?
The Fig 4.1 shows a demultiplexer of a TDM. If the frame size is 16 bits long (no synchronous / frame bits), what is the bit stream in each output? The bits arrive at the demultiplexer as shown by the arrow. 000011101010101010000111011100000111100011 Fig: 4.1
The figure below illustrates an asynchronous transmission in the form of short blocks. Each data bit is of 9.06 ms duration, start bit duration is 0.04ms more than a data bit duration, and each stop bit duration is double the duration of a start bit . Determine the bit rate and baud rate of the transmission. Data Bits Stop Bits Start Bit 1 101 0 10 010 1 Line is quiet! Direction of Data Data: 0100 1010
Given a home wireless IEEE 802.11AC Wi-Fi channel with a bandwidth of 80 MHz, a) Apply the real time streaming transmission of a video that samples at 40 frames/second and each frame has a resolution of 800x600 pixels. Each pixel has its colour presented in 16 bits. Calculate the required transmission rate. b) If the Wi-Fi Channel is very noisy with an acceptable Signal-to-Noise Ratio of 10dB, does the video streaming in part (a) still possible without any distortion? (provide workings)
c) One of the challenges in time-division multiplexing is how to handle a disparity in the input data rate. State the three data rate management techniques in time- division multiplexing. d) Assume we have three channels, two with bit rates of 100 kbps and another with a bit rate of 200 kbps, and they are to be multiplexed. Explain in words as well as by sketching how this can be achieved? ii. Calculate the frame rate. 111. From the list of data rate management techniques (see Question 1(c)), identify another approach that can be applied in this multiplexing scenario. Using that new approach, repeat from Question 1(d)i to iii. Calculate the bit rate of the link.
Timing error occurs in synchronization as a result of frequency difference between two physically oscillators (transmitter and receiver). Analyze the effects of frequency difference in asynchronous character transmission with data rate of 10 kbps as shown in figure below
Four channels, two with a bit rate of 120kbps and two with a bit rate of 880kbps, are to be multiplexed using multiple-slot TDM with no synchronization bits.Answer the following questions: a. What is the size of a frame in bits? b. What is the frame rate? c. What is the duration of a frame? d. What is the data rate?
Consider a communication channel with bandwidth B = 8000 Hz. Suppose the channel has a signal-to-noise ratio S/N = 541. What is the maximum data rate of this channel? ? What is the minimum number of signal levels needed to achieve a data rate of 64000 bps?
QUESTION 16 Determine the overhead and throughput for the following system. The system uses frames that begin with one start bit and end with 1 stop bit. The frame also contains five 7-bit ASCII characters and each character has one parity bit following it. overhead = 35/40, throughput = 5/40 overhead = 5/40, throughput = 35/40 overhead = 0.8333, throughput = 0.1667 overhead = 0.1667, throughput = 0.8333 overhead = 94.6%, throughput = 5.4% overhead = 5.4%, throughput = 94.6%