Data-link layer is responsible for implementation of point-to-point flow and error control mechanism. Flow Control When a data frame (Layer-2 data) is sent from one… Read More »DCN – Data-link Control & Protocols

There are many reasons such as noise, cross-talk etc., which may help data to get corrupted during transmission. The upper layers work on some generalized… Read More »DCN – Error Detection & Correction

Data Link Layer is second layer of OSI Layered Model. This layer is one of the most complicated layers and has complex functionalities and liabilities.… Read More »DCN – Data-link Layer Introduction

Switching is process to forward packets coming in from one port to a port leading towards the destination. When data comes on a port it… Read More »DCN – Network Switching

Multiplexing is a technique by which different analog and digital streams of transmission can be simultaneously processed over a shared link. Multiplexing divides the high… Read More »DCN – Multiplexing

Wireless transmission is a form of unguided media. Wireless communication involves no physical link established between two or more devices, communicating wirelessly. Wireless signals are… Read More »DCN – Wireless Transmission

The transmission media is nothing but the physical media over which communication takes place in computer networks. Magnetic Media One of the most convenient way… Read More »DCN – Transmission Media

To send the digital data over an analog media, it needs to be converted into analog signal.There can be two cases according to data formatting.… Read More »DCN – Analog Transmission

Data or information can be stored in two ways, analog and digital. For a computer to use the data, it must be in discrete digital… Read More »DCN – Digital Transmission

Physical layer in the OSI model plays the role of interacting with actual hardware and signaling mechanism. Physical layer is the only layer of OSI… Read More »DCN – Physical Layer Introduction