Unit-I:-
Introduction to data communications and Networking:- Introduction, history, data communication
and network architecture, protocols and standards, standards organization , layered network
architecture, open systems interconnection , data communications circuits, serial and parallel data
transmission, circuit arrangements and data communication networks , alternate protocol suite.
Signal , Noise , Modulation and Demodulation:- Introduction, signal analysis, Electrical Noise and
Signal to Noise ratio, analog modulation systems , Information capacity, bits, Bit rate, Baud and M-
ary Encoding , digital modulation.
Unit –II:
Transmission Media:- Introduction , Metallic cable Metallic transmission lines, transverse
electromagnetic waves, characteristics , transmission line classifications, M.T line types, M.T. line
equivalent circuit , Wave propagation on metallic transmission lines , metallic transmission line
losses. Optical fiber Transmission media:- Introduction, Advantages and Disadvantages of optical
fiber cables , Electromagnetic spectrum , O.F. Communication system block diagram, Optical fiber
Construction , the physics of light, velocity of propagation, propagation of light through an Optical
fiber cable, Optical fiber modes and classifications , O.F. Comparison , losses in optical fiber cables,
light sources, light detectors , lasers Digital transmission:- Introduction, Pulse modulation, pulse
code modulation, dynamic range, Signal Voltage-to-quantization Noise Voltage Ratio, Linear Versus
Nonlinear PCM Codes, Companding, PCM Line Speed, Delta Modulation PCM & Differential
PCM.
Unit –III:
Wireless Communication Systems:- Introduction, Electromagnetic Polarization, Rays & Wavefronts,
Electromagnetic Radiation, Spherical wavefronts & the Inverse Square law, Wave Attenuation &
Absorption, Optical Properties of Radio Waves, Terrestrial Propagation of Electromagnetic Waves,
Skip Distance, free-Space Pathloss, Microwave Communication Systems, Satellite Communication
Systems. Data Communication Codes, Error Control & data Formats:- Introduction, Data
Communication Character Codes, Barcodes, Error Control, Error Detection, Error Correction,
Character Synchronization. Data Communication Hardware, Data Communications Circuit, Line
Control Unit, serial Interfaces.
Unit – IV:
Network Topologies & Connectivity Devices:- Introduction, Transmission Formats, Topologies,
Collision & Broadcast Domains, Connectivity Devices, Standard Connectivity Device Logic
Symbols Local Area Networks:- Introduction, IEEE Project 802, Access Control Methodologies,
Medium access Control, LAN Data Link Layer, Logic Link Control Sublayer, MAC Sublayer,
Ethernet
