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 network topology where each node relays data in the network they all cooperate in sending out data in the network. Network Services: Packet Switched: This is a communication method which group data that is being transmitted into suitably sized packets which are transmitted using a medium. ISDN: Integrated Service Digital Network are communication standards used to simultaneously transmit digital transmission of voice, video etc. Multiplexed: Is a method which numerous analogue and digital signals are combined into a signal signal over a medium. ATM: Asynchronous Transfer Method is a switching technique used in telecommunication networks which uses multiplexing. WAP: Is a standard which is used to gain access to information using a mobiles wireless network. Broadband: Network Software: Used to manage and monitor networks. Network Operating System: Its software that is used to manage a network some network operating systems include Windows Server 2008 and 2012. Network Connection Software: CSMA/CD: CSMA/CA: Token Passing: Is a channel access method which enables tokens to be passed around nodes to allow the nodes to communicate. Network Devices: Switch: Is used to connect devices together in a network. Workstations: Is the name of computers used in a network. Servers: Is a running instance of an application capable of accepting requests from the client and responding accordingly. Router: Allows access to the internet. Bridges: Is a network device used to connect multiple network segments. NIC: A Network Interface Card is used to connect a computer to a network and allows communication of the computer network. Task 2 ( P2) Identify communication …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 network topology where each node relays data in the network they all cooperate in sending out data in the network. Network Services: Packet Switched: This is a communication method which group data that is being transmitted into suitably sized packets which are transmitted using a medium. ISDN: Integrated Service Digital Network are communication standards used to simultaneously transmit digital transmission of voice, video etc. Multiplexed: Is a method which numerous analogue and digital signals are combined into a signal signal over a medium. ATM: Asynchronous Transfer Method is a switching technique used in telecommunication networks which uses multiplexing. WAP: Is a standard which is used to gain access to information using a mobiles wireless network. Broadband: Network Software: Used to manage and monitor networks. Network Operating System: Its software that is used to manage a network some network operating systems include Windows Server 2008 and 2012. Network Connection Software: CSMA/CD: CSMA/CA: Token Passing: Is a channel access method which enables tokens to be passed around nodes to allow the nodes to communicate. Network Devices: Switch: Is used to connect devices together in a network. Workstations: Is the name of computers used in a network. Servers: Is a running instance of an application capable of accepting requests from the client and responding accordingly. Router: Allows access to the internet. Bridges: Is a network device used to connect multiple network segments. NIC: A Network Interface Card is used to connect a computer to a network and allows communication of the computer network. Task 2 ( P2) Identify communication …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