Uses of each type of network, including: sharing and storage of resources, sharing of peripherals, exchange of data, BitTorrent for transferring large files, access to internet services, tunneling, access to telephony services, access to content delivery services such as those used, for example, for streaming videos and to download software

Methods of sending data over a network, including: packet switching o the structure of packets, including what is contained in the packets o the modes of connection – how and why they are used, including: • connection mode, for example, frame relay, Transmission Control Protocol (TCP) • connectionless (datagram) mode, for example, ethernet, Internet Protocol (IP), User Datagram Protocol (UDP), circuit switching, including: o the use of communication channels in circuit switching, message switching, including: o the store of and forward method of sending messages across networks