SECTION 5
GLOSSARY
5-8 SECTION
5,
GLOSSARY
A router is often included as part of a network switch. A router
can also be implemented as software on a computer.
Routing Table
A table listing available routes that is used by a router to
determine the best route for a packet.
RTS
Request To Send.
S
Server
In a client/server architecture, a dedicated computer that supplies
files or services such as file transfer, remote login, or printing to
clients. Also see
client.
Service Provider
A company providing Internet connection services to subscribers.
SMTP
Simple Mail Transfer Protocol is a standard Internet protocol for
transferring e-mail.
Static IP Address
An IP address that is permanently assigned to a host. Normally, a
static IP address must be assigned manually. The opposite of
Dynamic IP Address
.
Subscriber
A user who accesses television, data, or other services from a
service provider.
Subnet Mask
A methodology that determines what the router will examine for
the destination of an IP address. A router delivers packets using
the network address.
Switch
On an Ethernet network, a switch filters frames based on the
MAC address, in a manner similar to a bridge. A switch is more
advanced because it can connect more than two segments.
T
TCP
Transmission Control Protocol on OSI Transport Layer 4 provides
reliable transport over the network for data transmitted using IP
(network layer three). It is an end-to-end protocol defining rules
and procedures for data exchange between hosts on top of
connectionless IP. TCP uses a timer to track outstanding packets,
