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TCP/IP
-
Transmission
Control
Protocol
/ Internet
Protocol
The primary protocol used on the Internet
(Protocol a method of sending and
receiving data).
TCP/IP creates a
connection between sender and receiver using port numbers--the port number
identifies a particular application for a particular device; FTP:
port
20 SMTP:Port 25 or HTTP: Port 80
TCP/IP is
responsible for providing end-to-end, error-free network connections by
transferring (routing) data packets from node to node within the network and
making sure that the datagram arrives at its destination exactly as it left
the source. It also determines (TTL) if the datagram is too fragmented
and have been hopping around the
network for too long and should not be
allowed to survive.
See:
What is an IP
address or
email domain address?
IP - Internet Protocol,
prepares a packet (datagram
of around 536 bytes (4,288 bits) for transmission across the Internet with the
IP header encapsulated. The IP packet is then passed to the next layer where
further network information is encapsulated onto it.
Internet Protocol itself is a connectionless protocol, it
does not create a session to send data, its responsible only for addressing
and routing of packets between computers and does not guarantee delivery or
gives acknowledgement of packets sent or lost--which is the responsibility of
TCP
TTL - Time To Live, is a field in the IP header which indicates how long a packet should be allowed to survive before it is discarded.
TTL essentially determines the maximum number of
hops permitted.
MTA - Message Transfer
Agent the exchange of mail using TCP/IP
is performed by MTA that defines how email messages are transmitted between
two users.
Email Daemon
- An email software program residing in a mail server that manages incoming and
outgoing mails.
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