1.5 Network Topologies, Protocols & Layers

1.5 Network Topologies, Protocols & Layers

1. KEY WORDS

   • Topology, Mesh network, Star network, WiFi, Encryption, Ethernet

2. MESH NETWORK

   • A Mesh network is where some or all of the workstations or other devices are connected directly to each other. Most are usually connected to the node that they exchange the most data with.

3. STAR NETWORK

   • In a Star network, each device is connected by an individual cable directly to the server. Star networks are usually the layout of choice in schools and offices because they tend to be most reliable of the topologies.

4. WiFi

   • WiFi is wireless frequency, radio waves are used to transmit data packets without the need for wires. This method is slower and more vulnerable to attack but it removes the need for cabling and networks. This means that it can be set up in remote locations such as in vehicels, in parks or in planes etc...

5. ENCRYPTION

   • This is a method of scrambling data with a key code which makes no sense. On an open or public network anyone can join and sniff out packets of data from other users. Therefore Encryption is used. If intercepted the data will have no meaning. In order to read the data the user is required to decrypt the data using the key.

6. NETWORK

   • A Network is a number of computers linked together to allow them to share resources. Networked computers can share Hardware, Software and Data.