![]() A POP3 mail server holds mail until the workstation is ready to receive it. Each computer stores an ARP cache of other computers ARP-IP combinations. A MAC address is your computer's unique hardware number and appears in the form 00-A0-F1-27-64-E1 (for example). ARP - provides IP-address to MAC address resolution for IP packets.TFTP - Same as FTP but not connection oriented.verifies that packets reach destination). Must resolve host name to IP address to establish communication. FTP - File transfer protocol is used for transferring files between remote systems.SMTP - Used to reliably send and receive mail over the Internet.ICMP - Internet Control Message Protocol enables systems on a TCP/IP network to share status and error information such as with the use of PING and TRACERT utilities.UDP - A connectionless, datagram service that provides an unreliable, best-effort delivery.It does not guarantee delivery and does not give acknowledgement of packets that are lost or sent out of order as this is the responsibility of higher layer protocols such as TCP. IP is responsible for addressing and routing of packets between computers. IP - This is a connectionless protocol, which means that a session is not created before sending data.It is able to reroute packets and is responsible for guaranteed delivery of the data. ![]()
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