Computer networks Archives - Telecom Academy
Wide area networks (WAN) & Metropolitan area networks (MAN)
Wide area networks (WAN) & Metropolitan area networks (MAN)

The next topic I want to look at is the topic of WAN and MAN. WAN (wide area network) A WAN is a wide area network. Generally, a WAN is one large network that covers a large geographical area. One of the best known WANs would be the internet. While WANs cover large geographical areas, […]

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Understanding the Internet, intranets, and extranets
Understanding the Internet, intranets, and extranets

The next thing we want to discuss is Internet, Intranets, and Extranets. Internet The Internet is a worldwide publically accessible infrastructure of cables, routers, switches, and servers. One thing to keep in mind about the Internet is that the Internet is not the Worldwide Web. Many people will use Internet and Worldwide Web interchangeably, but […]

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Exploring network collisions, CSMA/CD, and CSMA/CA
Exploring network collisions, CSMA/CD, and CSMA/CA

Next we want to address two common ways that nodes or computers use to access the network directly. In other words, to be able to get onto the network not necessarily to get resources but to actually access the physical network itself. The two ways we’re going to look at are both c methods which […]

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Client server and peer-to-peer connections
Client server and peer-to-peer connections

Now that we’ve looked at topologies, the next topic I want to look at is network management models. There are basically two network management models that are available for a local area network. One is Peer-to-peer model and other client server model. Peer-to-Peer Network Management Model One of those is the Peer-to-Peer Network Management Model. In […]

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Understanding point-to-point and point-to-multipoint networks
Understanding point-to-point and point-to-multipoint networks

The final two topologies we’re going to look at are the Point-to-Point and the Point-to-Multipoint topologies. Point-to-Point topology In a Point-to-Point topology you basically have two different nodes that are connected directly to each other with no intervening device. This topology is commonly used to connect two different ends of a WAN connection. Alternatively, it […]

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Understanding logical and physical network topologies
Understanding logical and physical network topologies

Logical and physical network topologies The first thing I’d like to talk about in networking are the topologies. As the name topologies implies, topologies have to do with the shape of a network. Topologies come in two types. They come in logical topology and physical topologies. Physical topology refers to the actual shape or layout […]

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Understanding the MAC Address (Media access controller)
Understanding the MAC Address (Media access controller)

MAC Address Hello, and welcome to this lecture on MAC addresses. In the last lecture we looked at ethernet and we also looked at CSMA/CD. In this lecture we’re gonna talk about a layer two concept known as MAC addresses. First up, what is a MAC address? MAC address is a 48-bit address that is […]

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Understanding the HTTP and HTTPS communication
Understanding the HTTP and HTTPS communication

HTTP and HTTPS Today we are going to discuss two main communication protocol HTTP and HTTPS. we will take some basic concept about both. HTTP HTTPS HTTP Hypertext Transfer Protocol, or HTTP, is one of the most utilized protocols on the internet. HTTP traditionally runs on TCP port 80. The ports can be changed for […]

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Dynamic Host Configuration Protocol (DHCP) & Configure DHCP
Dynamic Host Configuration Protocol (DHCP) & Configure DHCP

Dynamic Host Configuration Protocol (DHCP) Dynamic Host Configuration Protocol (DHCP) is the defacto system for automatically assigning IP addresses to hosts. When a client wants to request an IP, it broadcasts a discovery packet to UDP port 67. When a DHCP server responds to the DHCP discovery packet, it will sent the client a DHCP […]

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