IT Unit2 Blog

Communication VoIP: VoIP(voice over internet protocol) could be used by organisation to communicate with fellow employees in the organisations and other people who are involved with the company in some way (like a supplier). VoIP would allow them to do  this as i allow people to communicate with audio with a microphone over the internet. The only requirement is that both people who wish to communicate will require a stable internet connection if they wish to communicate with each other smoothly.device will also have to follow certain protocols if they wish to communicate with other devices using voice over internet protocol. Some example would be H.323 and SIP, the latter of which is for mobile devices and all device in the call must have SIP software and a SIP address if the wish to communicate with each other. As well as this H.323 and SIP are not compatible. Somes example of VoIP software which could be used by an organisation are Skype and discord. Instant messaging: In...

Segments - Segments are chunks of data that are sent over the transport layer of the TCP/IP model Data packets - Data packets are chunks of data that are sent over the internet layer of the TCP/IP model Frame - Frames are chunks of data that are sent over the link/network layer of the TCP/IP model.(Ethernet, WIFI and etc.) Protocols for each layer: Application - FTP, HTTP, SNMP, DNS Transport - UDP and TCP Internet layer - IP and ICMP Network layer - Ethernet, PPP, WIFI What is UDP(User Datagram Protocol): UDP is onless protocol. UDP being connectionless means that all data is sent from a program in one large load of packets and once the packets are sent and recieved that the end of communication for that task. UDP is suitable for when application that need to get data fast. These could include online games where information about the other players has to reach other players as fast as possible. The reason UDP is much faster than TCP is because error recovery is not attempte...