OSI Reference Model is an essential topic for all courses on computer engineering, information technology, BSc Computer Science, BE, BTech, BCA, MCA and BSc Information Technology. This video explains the topic by first explaining the concept of protocols, difference between… Read More ›

# Data Communications & Networking

## Quiz Page – Computer Science, Computer Engineering, IT

Click on the topic to start the quiz. On completing the quiz, you will immediately receive the correct answers on your email. Computer Fundamentals: Computer Fundamentals Digital Electronics, Digital Circuits and Systems: Computer Number Systems – Quiz 1 1’s and… Read More ›

## What is the BCD Code or the 8-4-2-1 Code?

What is the Gray Code? How To Convert Gray Code To Binary Code? How To Convert Hexadecimal Number to Octal Number?

## How To Convert Binary Number To Hexadecimal Number

In this video we discuss the conversion of Binary number to Hexadecimal Number

## How To Convert Hexadecimal Number To Binary Number

This video explains the process of converting a hexadecimal number to its binary equivalent.

## How To Convert Octal Number To Hexadecimal Number?

This video lecture discusses the method of converting an octal number to its hexadecimal equivalent.

## What is Sign Extension of a Binary Number?

Sign extension of a binary number. This video explains what is sign extension of a binary number and why it is necessary. It also explains, with 3 examples, how to carry out sign extension of different types of binary numbers.

## Quiz – OSI Reference Model

This short quiz is based on the topic of “OSI Reference Model”. There are 15 questions in all and total marks are 15. Immediately on completing this quiz and clicking the SUBMIT button, you will receive your score result. You… Read More ›