Understanding IP Multicasting

What is IP Multicasting? -IP multicasting allows a host to send a single packet to thousands of hosts across a routed network i.e. The Internet. It is used mainly for audio (radio) and video distribution. In Networking a packet can be sent to: A single host –Unicast = (TCP and UDP) All hosts -Broadcast – (UDP only) A group of hosts – Multicast -(UDP only)

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DNS Zones and Zone Files Explained

DNS is comprised logically of Domains but physically of zones. A domain is a logical division of the DNS name space whereas a zone is physical, as the information is stored in a file called a zone file.

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Host Name Resolution Methods Explained

On computer and home networks when you type an Internet address into a web browser the web browser needs to convert that web address into an IP address. To do that it uses the the name resolution processes provided by the host machine. There are several ways that the host machine can resolve a domain name. The main ones are:

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DNS Lookups Explained

In this tutorial we will examine what happens when you use DNS to lookup or resolve a domain name to an IP address. We look at how DNS lookups work, and the exact process involved when looking up a domain name. We follow the client DNS query as it is processed by the various DNS servers in the response chain. Before we start it might be useful to compare DNS name resolution with a standard question and answer that takes place in everyday life.

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SSL and SSL Certificates Explained For Beginners

Secure Sockets Layer (SSL) and Transport Layer security (TLS ) are protocols that provide secure communications over a computer network or link. They are commonly used in web browsing and email. In this tutorial we will look: TLS and SSL Public and Private keys Why we need certificates and what they do How to get a digital certificate and understand the different common certificate types. What is TLS TLS is based on SSL and was developed as a replacement in response to known vulnerabilities in SSLv3.

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Understanding The Domain Name Structure

To understand the domain name structure you really need to understand the problem the structure was meant to solve. The Domain Name Structure and Domain Name System were developed to organise and find the IP addresses of Computers on large distributed networks.

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Introduction to HTTP : Understanding HTTP Basics

HTTP stands for hypertext transfer protocol and is used to transfer data across the Web. The first version of the protocol had only one method, namely GET, which would request a page from a server. The response from the server was always an HTML page.- Wiki To give you an idea of how simple the HTTP protocol started out take a look at the Original specification ( only 1 page).

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Beginners Guide to Bluetooth

Bluetooth is a wireless networking protocol (like WIFI) designed to quickly and automatically connect devices like printers, PDAs, Cameras etc to computers and to each other without wires. Common Bluetooth applications are: Connecting mobile phones to each other to exchange pictures,ring tones, music etc Connecting computer peripherals like mice, keyboards, printers etc to a computer. Connecting headsets to mobile phones for hands free operation (Bluetooth car kits)

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