ICMP
Internet destination refers to the location that a process is aimed to get to. This part of the internet control message protocol with the destination expected to decode the message.
The protocol used to send an unknown message back to originating hosts is Internet Control Message Protocol (ICMP). Specifically, ICMP can send messages such as "Destination Unreachable," which informs the sender that a packet could not reach its intended destination. This helps in diagnosing network issues and improving communication reliability.
POP3
Server Message Block
SMB (Server Message Block)
You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.
The SMB (Server Message Block)
The command used to test the IPv4 protocol stack is ping. This command sends Internet Control Message Protocol (ICMP) echo request packets to a specified IP address and waits for a response, helping to diagnose network connectivity issues. By using ping, users can determine if a host is reachable over the network and measure the round-trip time for messages sent.
Tracert lists the places that a message passes from source to destination. Ping only says the computer destination is answering "yes, I'm here."
The Server Message Block (SMB) is a network sharing protocol that has an application-layer network protocol used for providing shared access to any file, printer, fax, and other computer miscellaneous. SMB also allows updating files on the remote server.
IMAP (internet message access protocol)
DNS is an application layer protocol. The application layer of the OSI model is the layer closest to the user and provides network services to the applications of the user. Examples of protocols that operate at the application layer are: DNS, FTP, TFTP, SNMP, TELNET, RLOGIN, SMTP, MIME, NFS, FINGER, BOOTP and SMB.