By S.S. Shinde
This ebook offers with uncomplicated standards of conversation wanted for computing device Networking and distinct bottom-up technique of OSI layers. This publication is extra designated and analytical than the other introductory machine Networking texts. This booklet could function a whole textual content for all undergraduate scholars of BCA, BCS, B.Sc.(Computer), measure direction in Electronics & Telecommunication, details expertise, computing device technological know-how & Engineering of varied Technical Universities. it's going to even be valuable to practitioners within the telecommunications undefined.
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Explain frequency modulation. 3. Explain frequency modulation. Also compare with amplitude modulation. 4. Explain FM detection process with waveforms. 5. Explain in detail various types of noise. 6. Explain noise figure. 7. Define following: • Bit rate • Baud rate • Noise figure • Noise temperature • Shot noise 8. Calculate the noise voltage at the input of a RF amplifier using a device that has a 300Ω equivalent noise resistance and a 300Ω input resistance. The bandwidth of the amplifier is 5 MHz and temperature is 17°C.
In such a device, there are many input fibers and many output fibers and the data from any input fiber can go to any output fiber. Typically, the coupler is a passive star, with the light from every input fiber illuminating the star. Although spreading the energy over n outputs dilutes it by a factor n, such systems are practical for hundreds of channels. QUESTIONNAIRES 1. What is multiplexing? Explain TDM in detail. 2. Discuss wavelength division multiplexing. 3. Differentiate FDM and TDM. Chapter 4 INTRODUCTION TO COMPUTER NETWORK INTRODUCTION Each of the past three centuries has been dominated by a single technology.
For a given application and over a given distant the cost/kbps declines with an increase in the data rate of the transmission facility. Similarly, the cost of transmission and receiving equipments, per kbps, declines with increasing data rate. 2. Most individual data-communicating devices requires relatively modest data-rate support. For most terminal and personal computer applications, a data rate of between 9600 bps and 64 kbps is generally adequate. [These statements were phrased in data communication, also apply to voice communication].