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
During initial days of internet, its use was limited to military and universities for research and development purpose. Later when all networks merged together and… Read More »DCN – Computer Network Security
Networking engineering is a complicated task, which involves software, firmware, chip level engineering, hardware, and electric pulses. To ease network engineering, the whole networking concept… Read More »DCN – Computer Network Models
A Network Topology is the arrangement with which computer systems or network devices are connected to each other. Topologies may define both physical and logical… Read More »DCN – Computer Network Topologies
Let us go through various LAN technologies in brief: Ethernet Ethernet is a widely deployed LAN technology.This technology was invented by Bob Metcalfe and D.R.… Read More »DCN – Network LAN Technologies
Generally, networks are distinguished based on their geographical span. A network can be as small as distance between your mobile phone and its Bluetooth headphone… Read More »DCN – Computer Network Types