1. SMTP – Simple Mail Transfer Protocol – Protocol for sending E-mail messages between
2. NFS – Network File System – A client/server application that allows all network users access
to shared files stored on computers of different types
3. TFTP – Trivial File Transfer Protocol – A simple form of the FTP. It has no security
features. Often used to boot diskless workstations, x-terminals and routers
4. DNS – Domain Name System (or Service or Server) – An Internet service that translates
domain names into IP addresses
5. SNMP – Simple Network Management Protocol – A set of protocols for managing complex
6. RARP – Reverse Address Resolution Protocol – Protocol used to convert a physical address,
like an Ethernet address, to be translated into an IP address
7. ARP – Address Resolution Protocol – Protocol used to convert an IP Address into a physical
8. FTP – File Transfer Protocol – Protocol for exchanging files over the Internet (Uploading and
downloading to/from a web server)
9. Telnet – A terminal emulation program for TCP/IP networks. It is a common way to remotely
control web servers
10. PING – Packet Internet Groper – A utility to determine whether a specific IP address is
accessible. Used primarily to troubleshoot internet connections
11. ATM – Asynchronous Transfer Mode – A network technology based on transferring data in
packets of a fixed size.
12. FDDI – Fiber Distributed Data Interface – A set of ANSI protocols for sending digital data
over fiber optic cable. Token-passing and 100 Mbps.
13. IEEE 802.X – A set of networking standards developed by IEEE. Network Management,
Data Link layer, MAC layer, network protocols and topologies, and MANs
14. DHCP – Dynamic Host Configuration Protocol – Protocol for assigning dynamic IP
addresses to devices on a network
15. WINS – Windows Internet Naming Service – A system that determines the IP address
associated with a certain network computer
16. NetBT – NetBios over TCP/IP – Defines an interface that programmers can use to write code
that performs various networking functions.
17. Ethernet – A LAN architecture that uses a bus or star topology and supports data transfers of
10 Mbps. Uses CSMA/CD. IEEE 802.3
18. Token Ring – A computer network in which all the computers are arranged in a circle. Uses
Token Passing. IEEE 802.5
19. IP – Internet Protocol – Specifies the format of packets and the addressing scheme. Usually
combined with TCP to form TCP/IP
20. ICMP – Internet Control Message Protocol – An extension to the IP. Supports packets
containing error, control , and informational messages
21. IGMP – Internet Group Management Protocol – The standard for IP multicasting in the
Internet. Used to establish host memberships in particular multicast groups on a single
22. TCP – Transmission Control Protocol – Enables two hosts to establish a connection and
exchange streams of data. Guarantees delivery of data and also guarantees that packets will
be delivered in the same order in which they were sent.
23. UDP – User Datagram Protocol – Runs on top of IP networks. Very few recovery services.
Used primarily for broadcasting messages over a network.