107
can also be used as a communication protocol in a private
network (either an intranet or an extranet). When you are set up
with access to the Internet, your computer is uses the TCP/IP
protocol.
TFTP
(Trivial File Transfer Protocol) – A version of the TCP/IP
FTP protocol that has no directory or password capability.
Throughput
- The amount of data moved successfully from one
place to another in a given time period.
Topology
- A network’s topology is a logical characterization of
how the devices on the network are connected and the distances
between them. The most common network devices include
hubs, switches, routers, and gateways.
Most large networks contain several levels of interconnection,
the most important of which include edge connections,
backbone connections, and wide-area connections.
UDP
(User Datagram Protocol) – A communications method
(protocol) that offers a limited amount of service when messages
are exchanged between computers in a network that uses the
Internet Protocol (IP). UDP is an alternative to the
Transmission Control Protocol (TCP) and, together with IP, is
sometimes referred to as UDP/IP. Like the Transmission
Control Protocol, UDP uses the Internet Protocol to actually get a
data unit (called a datagram) from one computer to another.
Unlike TCP, however, UDP does not provide the service of
dividing a message into packets (datagrams) and reassembling
it at the other end. Specifically, UDP doesn’t provide
sequencing of the packets that the data arrives in. This means
that the application program that uses UDP must be able to
make sure that the entire message has arrived and is in the right
order. Network applications that want to save processing time
because they have very small data units to exchange (and
108
therefore very little message reassembling to do) may prefer
UDP to TCP.
Upgrade
– To replace existing software of firmware with a newer
version.
Upload
– To send a file transmitted over a network. In a
communications session, upload means transmit, and download
means receive.
URL
(Uniform Resource Locator) – The address that defines the
route to a file on the Web or any other Internet facility. URLs are
typed into the browser to access Web pages, and URLs are
embedded within the pages themselves to provide the hypertext
links to other pages.
VLAN
(Virtual LAN) – A logical association that allows users to
communicate as if they were physically connected to a single
LAN, independent of the actual physical configuration of the
network.
WAN
(Wide-Area Network) - A communications network that
covers a wide geographic area, such as a state or country.
WEP
(Wired Equivalent Privacy) – A data privacy mechanism
based on 64-bit and 128-bit shared key algorithms, as described
in the IEEE802.11 standard.
WINIPCFG
- Configuration utility based on the Win32 API for
querying, defining, and managing IP addresses within a network.
A commonly used utility for configuring networks with static IP
addresses.
Workgroup
- Two or more individuals that share files and
databases.
Содержание ENR1504
Страница 55: ...109 MEMO 110...
