| FDDI |
Fiber Optic Data Distribution Interface. A cable interface
capable of transmitting data at 100 Mbps. Originally specified for fiber
lines,
FDDI can also operate over twisted-pair cable for short distances (CDDI).FDDI
provides network services at the same level as Ethernet and Token Ring
(OSI layers 1 and 2).FDDI provides an optional dual counter-rotating
ring topology that contains primary and secondary rings with data flowing
in opposite directions. If the line breaks, the ends of the primary and
secondary rings are bridged together at the closest node to create a
single ring again. |
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| Firestopping |
"""Qualified"" firestopping
materials must be installed in holes made thru fire rated floors, walls
or ceilings,
that were made for the penetration of pipes, cables stub-ups or other items." |
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| Grounding |
Intentional connection to earth (ground) to prevent buildup
of voltages that may result in undue hazards to connected persons or equipment |
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| Hub |
A hub is a centralized connection device that
re-transmits the information sent from each computer onto the network so
it can be accessed by other
attached network devices (PCs, Printers, Servers) |
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| LAN |
"
A LAN (Local Area Network) is a network that covers a ""local"" area,
like a floor or building. It lets you share files, share printers, and
share a modem or other Internet connection among groups of users." |
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| MAC Address |
A MAC Address (Media Access Control) is a unique identifier
assigned to a NIC (Network Interface Card) by the manufacturer. It is also
known as a Pstation Address (Physical Station Address). The MAC address
is used to identify a station on the network |
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| Netware |
A Novell developed Network Operating System (NOS). Provides
file and printer sharing among networks of Personal Computers (PCs). Each
NetWare network
must have at least one file server, and access to other resources is
dependent on connecting to and logging into the file server. The file
server controls user logins and access to other network clients, such
as print servers, fax servers and file servers. |
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| Network OS (NOS) |
An NOS (Network Operating System) is software that controls
the operation of your network. For example, it allows more than one user
to gain access
to the programs and data stored on a server. It also controls which users
have access to network resources such as printers or shared files. In
general, there are two different types of NOS: Peer-to-Peer (Windows
95/98) and Client/Server (Windows NT, Windows 2000, Netware, Unix) based
operating systems. |
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| NIC |
A NIC (Network Interface Card) is a card that is installed
in a computer system to attach it to the network.. Different types of NICs
are used
for different types of PCs and network topologies (Ethernet, Token Ring,
ATM, FDDI). |
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| Peer to Peer |
Typically used for Small Office/Home Office (SOHO) environments.
Each PC acts as an independent workstation that stores data on its own
hard drive
and shares it with all other PCs on the network. Printers and other devices
may also be shared this way. It is the most basic method of installing
a network. Typically security is at a minimum or non-existent level and
performance is marginal. |
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| Planning |
" Work and plan with future growth in
mind
Install a minimum of 2 cables to each outlet
Install one outlet for every 100 square feet of office space
Work area outlets or faceplates should be the same height as electrical
outlets
One outlet minimum in every office space - planning for the telephones,
fax machines, computers and modems" |
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| Plenum |
A compartment or chamber to which one or more air ducts
are connected and forms part of the air distribution system for the building.
Plenum rated
cable MUST be used here. |
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| PRI |
The ISDN equivalent of a T-1 circuit. The PRI provides 23B+1D
channels running at 1.544 Mbps. |
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| Riser |
A vertical run in a shaft, or from floor to floor, sealed
off from the rest of the building |
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| Space |
" Network Spaces:
SPACE - A room used to house telecommunications equipment
PATHWAY - A facility used to house and support communications cables as
they travel between spaces
Space - There are three types of spaces
ENTRANCE FACILITY - Room that houses the cables entering the building
from Service provider, their associated protection terminals, cables
leaving the building and cables going to other rooms in the same building.
EQUIPMENT Room - Room that houses all the building-server or campus serving
equipment
TELECOMMUNICATIONS closet - Room that houses the floor serving or area
serving equipment and cables for communications
EQUIPMENT Room should be:
Centrally located in relation to the building
Easily accessible for the installation and support of equipment
Room size should be about 1 square foot of equipment room floor space
for every 100 square feet of work area floor space.
Above ground and away from water source
Located away from sources of electromagnetic interference (radios transmitters,
elevators, power transformers, etc)
Temperature and humidity controlled 24 x7
A locking door at least 3feet x 6.6 feet, with no doorsill or center
post
Should have a separate 120v ac power supply circuit to its own electric
panel"
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| Structured Cable |
Structured cabling is designed to run anything,
anywhere, at any time. Structured cabling eliminates the need to follow
one vendor’s rules
concerning cable types, connectors, distances or topology. It allows
for the installation of cabling in a facility once and the adapting of
that cabling for any application—from telephone to an Ethernet
or Token Ring local area network (LAN) or an emerging technology like
ATM (Asynchronous Transfer Mode). |
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| Switch |
A switch does essentially the same thing as a hub but at
a higher performance level. It filters, forwards, and floods information
based on the MAC
(Media Access Control) address. This use of dedicated bandwidth allows
for higher performance and efficiency. |
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| T1 |
A digital transmission link with a capacity of 1.544 Mbps.
It uses two pairs of normal twisted wires. It can normally handle 24 voice
conversations,
each one digitized at 64 Kbps. |
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| TCP/IP |
Transmission Control Protocol (TCP) and Internet Protocol
(IP) are the standard network protocols in UNIX environments. They are
almost always
implemented and used together and called TCP/IP. |
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| Token Ring |
Developed by IBM, this 4 or 16 Mbps network uses a ring
topology and a token-passing access method. Very efficient, but more expensive
and difficult
to manage than Ethernet. |
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| Bridge |
A networking device that connects two LANs and forwards
or filters data packets between them, based on their destination addresses.
Bridges operate
at the data link level (or MAC-layer) of the OSI reference model, and
are transparent to protocols and to higher level devices like routers. |
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