What is Computer Networking?

Essentially a network is a group of computers (or other devices) connected together, either by a cable or wireless. There are three common types of network: • LAN • MAN • WAN LAN LAN is a local Area Network, usually limited to a home or a small office. A Local area network usually connect devices… Read More »

UDP vs TCP

Whenever a computer wants to communicate with another computer. The communication between those two computers need to be good and reliable. So, we can guarantee that the data is received correctly. For example when you want to view a web page or download a file or locate an email, you would expect to view the… Read More »

Difference between a Modem and a Router

A lot of people actually think that a modem and the router are the same thing. But they are not. They are different with two separate roles on network. Modem If you want an internet inside your home or business you have to have a modem. A modem is what brings the internet into your… Read More »

Routing Information Protocol

It is an application layer protocol used to route data packets by finding the best Hop count. A fairly crude way of trying to determine the best path. Most of the newer protocols also look for the time it takes for the data Packet to get to the destination. Some routers might become congested so… Read More »

Router Port Forwarding

Port forwarding is the act of configuring a router to make a computer or network device that is connected to it accessible to other computers network devices outside the local network. In other words, when you turn on port forwarding on your device you are turning on remote internet access for it. Port forwarding allow… Read More »

OSI Model

The model is a theoretical stack of seven layers that can be used as a reference to help understand, “How networks operate?” The model was introduced to standardize the network in a way that allows multi-vendor systems. Prior to this you only be able to have one vendor network. Because Devices with one vendor could… Read More »

DNS: Domain Name Servers

In the era of landline phones, there used to be a diary or phone directory to save the important contacts of friends and family. It also contain emergency numbers as well. With the advancement in technology the use of the diary has almost finished. Now, everyone saves contact in his smart phones. If user dial… Read More »

What is meant by Router’s MAC Address?

Whenever you click on an enticing link in a web browser, the website you are looking at knows to send whatever the link contains to your computer and not your neighbors. Because Your computer send it IP address kind of like a return on an envelope but, as it turns out IP address only get… Read More »

IPv4 vs IPv6

You might have noticed that the address scheme of a country is never uniform even in a single state. Some prefer to write street number before city while someone prefers to write city name in the start of his home address. Many private organizations use their own defined format to store the employee address in… Read More »

Default IP Address Classes

For two or more computers to be able to communicate to a network it is necessary for them to identify each other uniquely. Now this is where IP address comes in. When a computer is connected to a network is automatically assigned an IP address. This IP address allows computer to send their data packets… Read More »