Glossary
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subnet mask
The subnet mask indicates which part of an IP address (
) is the network address and which the address of
the computer. The network address defines what is called the
subnet.
switch
A switch is a device that connects multiple network devices
with each other, for instance through an Ethernet.
In contrast to a hub, a switch can establish direct connections
between the connected devices. This makes it possible to
send data packets directly to specific recipients.
The entire data throughput is at the disposal of every con-
nected device.
TCP/IP
short for Transmission Control Protocol / Internet Protocol
TCP/IP is the “language” of the Internet. TCP/IP is used to re-
fer to a suite of protocols used for data communication over
the Internet. TCP and IP are the network and transport proto-
cols underlying most Internet services, including file transfer
(FTP) and e-mail communication (SMTP). TCP/IP is available
for practically all computer systems. TCP/IP thus offers the
advantage of trouble-free communication between otherwise
incompatible networks and systems.
update
A more recent version of software or firmware is called an up-
date. Updates are often free of charge, resolve minor pro-
gramming errors, and sometimes also offer new functions.
uplink port
The uplink port on a hub or switch is designed for connecting
another hub or switch, or a router. In contrast to the uplink
port, there is also a user port for connecting terminal devices.
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