The purposes and uses of protocols in the preparation, addressing, sending and receiving of data across networks, including: Transmission Control Protocol (TCP), Internet Protocol (IP), Internet Control Message Protocol (ICMP), Address Resolution Protocol (ARP) and inverse address Resolution Protocol (InARP), Dynamic Host Configuration Protocol (DHCP), User Datagram Protocol (UDP), Hypertext Transfer Protocols (HTTP and HTTPS), File Transfer Protocol (FTP), tunneling protocol, for example, L2TP, Simple Mail Transfer Protocol (SMTP), Post Office Protocols, for example, POP3, Internet Message Access Protocol (IMAP), Telnet, SSH, Internet Protocol Security (IPsec), TLS/SSL

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