JNTUH R17 M.TECH II Semester PRINCIPLES OF COMPUTER COMMUNICATIONS AND NETWORKS Examination - January 2020 (Common to CS, EPS, PE, PEED, CSE, PEES, CNIS)

Local Internet Service Providers,Layered Tasks,OSI Reference Model,OSI Model, Network layer,Transport Layer,Session Layer, Presentation Layer,Application Layer,The TCP/IP Reference Model, Comparison of OSI and TCP/IP Reference Model,Physical Layer And Overview Of Pl Switching, Interleaving.

What is a system?, Classification of systems with some solved problems.

Analog communication - Amplitude modulation. Includes basic definitions, analysis, block diagrams, graphical representations and few example problems

need of digital modulation,advantages of digital communication,disadvantages of digital comunication,basic encoding techniques or digital modulation techniques,amplitude shift keying,coherent ask detector,non coherent ask detector, pplications of digital modulation,binary phase shift keying,BPSK transimeter,operation,bpsk modulated waveform and phasor diagram.

Uncertainity,Huffmann Coding Techniques,SOURCE CODING,Entropy,Property of entropy,source coding therom,Huffman coding,Input,Output,Extended Huffman coding,Extended Huffman codebook,Channel Capacity Theorem, Channel capacity in wireless communications,AWGN channel,Frequency-selective channel..

GSM Services,GSM functional architecture,System architecture,Radio subsystem,Base station controller,Mobile station,Network and switching subsystem,Mobile services switching center,Mobile services switching center.

use of data communication network,history of data communication,standard organisition for data communication,some of the standard organisation of data communication are as,internal standard organization,consultative commite for international telephony and telegraphy.

effects of noise on a signal,types of signal,correlated and un correlated,types of uncorrelated noise,external noise and internal noise,atmospheric noise,extraterrestrial noise,solar noise,man made noise,internal noise,transist time noise,practicability of antena,to remove interference,reduction of noise,multiplexing.

Antenna Wave Propagation

Optical Communications Fundamentals