Asus SL1200 User Manual page 174

TCP/IP Transmission Control Protocol/Internet Protocol
The basic protocols used on the Internet. TCP is respon-
sible for dividing data up into packets for delivery and reas-
sembling them at the destination, while IP is responsible
for delivering the packets from source to destination. When
TCP and IP are bundled with higher-level applications such
as HTTP, FTP, Telnet, etc., TCP/IP refers to this whole
suite of protocols.
Telnet/SSH An interactive, character-based program used to access a
remote computer. While HTTP (the web protocol) and FTP
only allow you to download files from a remote computer,
Telnet / SSH allows you to log into and use a computer
from a remote location.
TFTP Trivial File Transfer Protocol
A protocol for file transfers, TFTP is easier to use than File
Transfer Protocol (FTP) but not as capable or secure.
Trunk Two or more ports are combined as one virtual port, also
called as Link Aggregation.
TTL Time To Live
A field in an IP packet that limits the life span of that pack-
et. Originally meant as a time duration, the TTL is usually
represented instead as a maximum hop count; each router
that receives a packet decrements this field by one. When
the TTL reaches zero, the packet is discarded.
twisted pair The ordinary copper telephone wiring long used by
telephone companies. It contains one or more wire pairs
twisted together to reduce inductance and noise. Each
telephone line uses one pair. In homes, it is most often
installed with two pairs. For Ethernet LANs, a higher grade
called Category 3 (CAT 3) is used for 10BASE-T net-
works, and an even higher grade called Category 5 (CAT
5) is used for 100BASE-T networks. See also 10BASE-T,
100BASE-T, Ethernet.
Chapter 15 - Glossary
ASUS SL1200
157