Task 1 ( P1)
Explain how networks communicate.
Wired: Used to transfer information over networks some include twisted pair cables, coaxial cables and telephone lines.
Wireless: Are used when it is impossible or difficult to install wires or cables it is sends communication signal via microwaves, satellite, infrared signals and so on.
Physical Layouts:
Ring: Each computer is connected to two other forming a single continuous pathway for signals.
Star: Consists of a central switch, hub or computer which acts like a conduit to transmit messages.
Line: Data is sent to all nodes on the network at the same time. Devices are positioned along a line.
Tree: Is a combination of bus and star topology the central cable are linked to a bus.
Mesh: Is a …show more content…
TCP/IP Model - TCP and IP stand for Transmission Control Protocol and Internet Protocol this network model has only four layers these are the application layer, the transport layer, the internet layer and the network access layer.
These two protocols are used on the internet all the time for transporting data to allow communication to others on the internet and so on with TCP/IP instead of having separate layers for the presentation layer and the session layer instead it is combined into the application layer this model also is a simpler model due to the fact that it has less layers than OSI.
TCP/IP is quite dependant on protocols and the services, interface and protocols are not as clearly separated compared to OSI this model is also kind of the implementation of the OSI and the network layer only provides connectionless services.
Protocols:
Bluetooth – Allows short ranged interconnections through the use of electronic devices like mobiles and computers.
Wi-Fi – Allows devices to gain access to the internet wirelessly.
IrDA -
Cellular radio -
GSM/UMTS -
WAP -
WML
Explain how networks communicate.
Wired: Used to transfer information over networks some include twisted pair cables, coaxial cables and telephone lines.
Wireless: Are used when it is impossible or difficult to install wires or cables it is sends communication signal via microwaves, satellite, infrared signals and so on.
Physical Layouts:
Ring: Each computer is connected to two other forming a single continuous pathway for signals.
Star: Consists of a central switch, hub or computer which acts like a conduit to transmit messages.
Line: Data is sent to all nodes on the network at the same time. Devices are positioned along a line.
Tree: Is a combination of bus and star topology the central cable are linked to a bus.
Mesh: Is a …show more content…
TCP/IP Model - TCP and IP stand for Transmission Control Protocol and Internet Protocol this network model has only four layers these are the application layer, the transport layer, the internet layer and the network access layer.
These two protocols are used on the internet all the time for transporting data to allow communication to others on the internet and so on with TCP/IP instead of having separate layers for the presentation layer and the session layer instead it is combined into the application layer this model also is a simpler model due to the fact that it has less layers than OSI.
TCP/IP is quite dependant on protocols and the services, interface and protocols are not as clearly separated compared to OSI this model is also kind of the implementation of the OSI and the network layer only provides connectionless services.
Protocols:
Bluetooth – Allows short ranged interconnections through the use of electronic devices like mobiles and computers.
Wi-Fi – Allows devices to gain access to the internet wirelessly.
IrDA -
Cellular radio -
GSM/UMTS -
WAP -
WML