1.1 Describe common physical network topologies
Topologies
Topologies describes the how different computers or other devices in a computer network is arranged. Topologies can be either physical (meaning placement of the components are arranged in a particular shape) or logical (meaning how data flows despite of its physical layout). There are different recognised topologies including star, mesh, tree and ring.
In a star topology, each network device (computer or peripheral) is linked to a central hub or a switch with a point-to-point access or connection. All the data and information is passed through the central hub before reaching to its destination. For example, in a small home network, all the computers or devices are connected to single …show more content…
This layer provided the interface between applications used on the computer. Protocols such has Telnet, FTP, HTTP, SMTP etc are used on this layer. There aren 't any special devices operating in this layer, just the actual computer itself.
Layer 6 which is presentation layer in OSI model helps with formatting of the data, for example if you are sending email, presentation layer will format data into email format which can be understood for other protocols. In this layer, depending on the type of the data it will be converted to certain formats including WMV, AVI etc for video JPG, BMP etc for images and WAV,MP3 etc for audio. It also includes data conversion, data compression and data encryption. There aren 't any special devices operating in this layer, just the actual computer itself.
Layer 5 which is session layer in OSI model helps with establishing, monitoring, maintain and terminating communication session with the receiving device. Popular protocols such as RPC, METBIOS or SQL etc are used. There aren 't any special devices operating in this layer, just the actual computer
Topologies
Topologies describes the how different computers or other devices in a computer network is arranged. Topologies can be either physical (meaning placement of the components are arranged in a particular shape) or logical (meaning how data flows despite of its physical layout). There are different recognised topologies including star, mesh, tree and ring.
In a star topology, each network device (computer or peripheral) is linked to a central hub or a switch with a point-to-point access or connection. All the data and information is passed through the central hub before reaching to its destination. For example, in a small home network, all the computers or devices are connected to single …show more content…
This layer provided the interface between applications used on the computer. Protocols such has Telnet, FTP, HTTP, SMTP etc are used on this layer. There aren 't any special devices operating in this layer, just the actual computer itself.
Layer 6 which is presentation layer in OSI model helps with formatting of the data, for example if you are sending email, presentation layer will format data into email format which can be understood for other protocols. In this layer, depending on the type of the data it will be converted to certain formats including WMV, AVI etc for video JPG, BMP etc for images and WAV,MP3 etc for audio. It also includes data conversion, data compression and data encryption. There aren 't any special devices operating in this layer, just the actual computer itself.
Layer 5 which is session layer in OSI model helps with establishing, monitoring, maintain and terminating communication session with the receiving device. Popular protocols such as RPC, METBIOS or SQL etc are used. There aren 't any special devices operating in this layer, just the actual computer