I am Ujjwala shekhawat. l am from Jaipur, Rajasthan. I have done MCA with honours division. I love teaching. For me teaching is Learning.

Ujjwala Shekhawat

This course will cover the basics of networking and data communication, which is very useful in academic exams as well as it will help you to make a sound base for competitive exams in computer science, information technology.

Prepare for UGC NET 2019 by watching our free online lessons covering UGC Net syllabus and also helping you solve Previous year question papers. Pursue your dream of JRF.

NTA-UGC-NET & SET Exams

Hindi

(Hindi) Networking and Data Communication: NTA UGC NET

Introduction

Data Comm. & Computer Networks

Computer Science & Application

NET Exams

Ace the toughest competitive and government exams in India 

Test Preparation

This video covers the basics of OSI Model and it's layered architecture. Mind maps help us to memories all functionalities, responsibilities, protocols and standards of each layer.

OSI Model (in Hindi)

Physical layer of OSI model. This layer is the closest layer to transmission medium which make it one of the important layers of OSI layers.

Physical Layer-OSI Model Part 1 (in Hindi)

Basics of analog signals e.g. peak amplitude, period, frequency, wavelength, bandwidth, composite signals.

Physical Layer-OSI Model-Part 2 (in Hindi)

Basics of digital signals e.g bit rate, bit length, broadband and baseband transmission, signal impairment, network performance.

Physical Layer- OSI Model Part 3 (in Hindi)

Digital transmission. Overview of schemes and topics under digital transmission.

Digital Transmission Overview (in Hindi)

Unipolar(NRZ) and polar(NRZ, RZ, Manchester and differential Manchester) techniques with there pros and cons.

Line coding- Digital transmission(in Hindi)

Line coding schemes in digital to digital conversion. Bipolar, multilevel and multiline transition schemes.

Line coding schemes part-2(Hindi)

Block coding and scrambling(B8ZS, HDB3) from digital to digital conversion.

Block coding schemes and scrambling, Digital transmission(Hindi)

Transmission modes of data in digital transmission. Parallel and serial: asynchronous, synchronous, isochronous.

Transmission Mode - Digital Transmission (in Hindi)

Analog-to-digital conversion. Digitization: Pulse code Modulation(PCM) and Delta Modulation(DM).

Analog-to-digital conversion. Digital transmission(Hindi)

Analog Transmission. Digital-to- analog conversion techniques (ASK, FSK, PSK, QAM), Analog-to-analog conversion techniques  (AM, PM, FM).

Analog Transmission (in Hindi)

Bandwidth utilization: Multiplexing. 
multiplexing techniques: Frequency Division multiplexing(FDM), Wavelength Division multiplexing(WDM).

Bandwidth Utilization: Multiplexing and Spreading(in Hindi)

Multiplexing: Synchronous Time division multiplexing, Statistical Time Division Multiplexing. Data rate management techniques: Multilevel multiplexing, multiple-slot allocation and pulse stuffing or bit stuffing or bit padding.

Bandwidth Utilization: Multiplexing and Spreading Part-2 (Hindi)

Spread spectrum- Bandwidth utilization. Frequency Hopping Spread Spectrum(FHSS), Direct Sequence Spread Spectrum(DSSS).

Spread Spectrum(SS)-Bandwidth Utilization (in Hindi)

Transmission media: Wired or guided mediums are twisted pair cable(unshielded and shielded twisted pair cables) and coaxial cable.

Transmission media - physical layer.(Hindi)

Transmission media: Fiber-optic cables. Light and its properties: reflection and refrection. Propagation modes (multimode step index, multimode graded index, single mode).

Transmission Media: Fiber-optic Cables. Physical Layer(in Hindi)

Wireless or unguided communication: Electromagnetic spectrum.Types of waves (radio waves, microwaves, infrared waves), propagation modes ( ground, sky and line of sight propagation) and bands.

Wireless or unguided transmission media. (Hindi)

🌟 MCA Gold Medalist 🌟 Star Educator 🌟Gate Qualified 🔴UGC NET qualified🌟BOOK published on LINUX ADMINISTRATION by kalyani publish

Nisha Mittal

In this course we will cover all important topics of computer Network related to network security .
Cryptography and it's types for example secret key algorithm, public key algorithm for NTA NET computer science, KVS PGT aspirants

(Hindi) Network Security for NTA NET

In this course Nisha Mittal will provide solutions of computer Network questions for NTA NET computer science, KVS PGT COMPUTER SCIENCE exams

(Hindi) Numericals of Computer Network: NTA-UGC NET

In this course we are going to start computer Network's most important topics for NTA NET computer science. IP ADDRESSING , Classes in IP adddressing, Subnetting, Supernetting

(Hindi) Computer Network IP addressing

This course is very important for NTA NET computer science aspirants as we are going to discuss subnetting topic of computer Network here in detail .In this couse you 'll learn techniques to solve questions in exam in less time .

(Hindi) Subnetting in Detail - NTA UGC NET

Completed Post Graduate in Computer
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Sangamesh 

In this course we learn logic gates from digital electronics for NTA NET Exam.

Logic Gates for NTA-NET Exam (Digital Electronics)

Rashmi Vishwakarma

Today in IT, one word data science is making boom. everyone wants to know about. Here I tried to explain some basic of data science.These basic will be helpful in learning data mining and ware housing. As well I will also explain algorithms for clustering, classification, frequent pattern mining , prediction, association analysis and many more topics,which are helpful in Machine learning.

Lessons

17 lessons • 2h 42m

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OSI Model (in Hindi)

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Physical Layer-OSI Model Part 1 (in Hindi)

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Physical Layer-OSI Model-Part 2 (in Hindi)

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Physical Layer- OSI Model Part 3 (in Hindi)

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Digital Transmission Overview (in Hindi)

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Line coding- Digital transmission(in Hindi)

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Line coding schemes part-2(Hindi)

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Block coding schemes and scrambling, Digital transmission(Hindi)

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Transmission Mode - Digital Transmission (in Hindi)

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Analog-to-digital conversion. Digital transmission(Hindi)

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