Syngress - Eleventh Hour Network+ Exam N10-004 Study Guide (11 ...

Glossary
177
Access Determines who can use the network and how, and if features of the
network are available for private or public use.
Access Control Lists (ACLs) A list of permissions that specifies access to an
object.
Application Level Firewall A firewall that understands the data at the application
level and functions at the application, presentation, and session layers
of the OSI network model.
Application Program Interface (API) This layer of Microsoft’s Windows model
is the interface through which developers can access the network infrastructure
services such as various application layer protocols.
Application Server A client/server role that allows clients to run certain programs
on the server and enables multiple users to utilize common applications
across the network.
Authentication Server Used to verify the supplicant port access entity (PAE), the
authentication server decides whether or not the supplicant is authorized to
access the authenticator.
Authenticator PAE An entity that enforces authentication before allowing access
to resources located off of that port.
Bandwidth A measurement of the amount of data that can be passed over a cable
in a given amount of time.
Bayonet–Neill–Concelman (BNC) A type of locking connector used to terminate
coaxial cables.
Bridge A network device that has the ability to forward packets of data based on
Media Access Control (MAC) addresses. A bridge can look at a packet of data
and determine the source and destination involved in the transfer of packets.
Broadcast Messages Messages that are sent out to all of the nodes in a broadcast
domain.
Cable Testers Tools that can analyze the capability of a cable to carry signals.
Cabling A term that can refer to the act of installing the cable and the work
performed before installation of a network begins.
Carrier Protocol The protocol used by the network (Internet Protocol [IP] on
the Internet) that the information is traveling over.
Channel Service Unit/Data Service Unit (CSU/DSU) A device that takes a signal
from a digital medium and multiplexes it.
Coaxial Cable A cable that contains a single copper wire at the center of the
cable core that is used to carry the signals. Coaxial cable is surrounded by