SYSTEMS VERIFICATION BICSI FINAL EXAM QUESTION AND COMPLETE CORRECT ANSWERS VERIFIED 100% GUARANTEED PASS
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BICSI
Institution
BICSI
SYSTEMS VERIFICATION BICSI FINAL EXAM QUESTION AND COMPLETE CORRECT ANSWERS VERIFIED 100% GUARANTEED PASS
Cross Connects, Backbone Cabling, and Administration
Administration systems include requirements for; identifiers - that serve to locate the element record and administration scheme such as...
SYSTEMS VERIFICATION BICSI FINAL EXAM QUESTION AND
COMPLETE CORRECT ANSWERS VERIFIED 100% GUARANTEED
PASS
Cross Connects, Backbone Cabling, and Administration
Administration systems include requirements for; identifiers - that serve to locate the
element record and administration scheme such as the standards found in ANSI/TIA
606-B, records - which can be paper based, spreadsheets, database programs, or
computer programs specially designed for that purpose, and labeling - with a variety of
methods to display identifiers for the buildings, pathways, spaces, cabinets, racks,
cabling, connectors, the choice of material, fastening method, environmental,
performance, and security issues. Common methods for displaying identifiers include
bar codes, graphics, labels, tags, and electronic identifiers
There are four classes of administration:
Class 1 - 1 ER which is the only telecommunications space on the site
Class 2 - 2 or more telecommunications spaces in a building
Class 3 - Multiple buildings at a single site
Class 4 - Multiple sites or campuses
Data Centers - are buildings or portions of a building whose primary function is to house
a computer room, including the data center electrical rooms, mechanical rooms, storage
rooms, staging rooms, operations and command center, and other spaces whose
primary functions are to support the computer room.
For redundancy, in accordance with ANSI/BICSI-002 stamdards, classes of Data
Centers have been established.
Class 0 - a single path data center that meets the minimum requirements but cannot be
,classified as Class 1 or higher
Class 1 - the single path data center
Class 2 - the single path data center with redundant components
Class 3 - the concurrently maintainable and operable data center
Class 4 - the fault tolerant data center that contains two separate infrastructures with
their own set of redundant components.
Some of the key areas include a Telecommunications Entrance Room that contains the
External Network Interface (ENI), which is typically located outside the computer room,
a computer room that contains the IT equipment for data processing, a Main Distribution
Area (MDA), which is the room or space in the computer room that containd the MC
(CD) for computer room cabling, core LAN and SAN switches, and a Horizontal
Distribution Area (HDA) which is the room or space in the computer room that contains
the HC (FD) for the cabling to equipment cabinets and racks. The HDAs may not be
physically separate from the MDA, and a data center will often contain multiple HDAs
for redundancy or to minimize horizontal cabling length.
Cabinets are bolted together and will have a designated cold and hot side where the
exhaust from equipment face each other and cool air is supplied to the cold aisle.
NOTE: A rack unit (RU) is equivalent to one mounting slot, with a typical 2m (7 ft) rack
having 42 RUs.
There are two types of backbone cabling:
Interbuilding cabling distributed between buildings, which has a cross connect field color
of brown and Intrabuilding cabling which is distributed between spaces within the
building.
Cross Connects are terminated with two types of connections: patch cords and jumpers.
Balanced twisted pair equipment and patch cords usually have 8p8c modular plugs and
may have stranded conductors for added flexibility. The use of stranded conductors
have 20% more attenuation for 24 AWG cables and 50% more for 26 AWG than solid
,conductors.
Field constructed patch cords are not recommended for cat 5e and higher systems and
may not be allowed for systems above 5e.
The Demarcation point has a cross connect field color of orange
Network Connections (network, auxiliary equipment) have a cross connect field color of
green.
Common equipment ( connections to PBX, mainframe computers, LAN, and
multiplexers) have a cross connect field color of purple
Miscellaneous (auxiliary, alarm, security) have a cross connect field color of yellow
Reserved and key telephone systems have a cross connect field color of red.
There are three kinds of cross connections:
Main Cross Connect (MC [CD - Campus Distributor] which is in the 1st level of hierarchy
(because it comes from the MC to an IC, or HC), which has a cross connect field color
code of white
Intermediate Cross Connect (IC [BD - Building Distributor]) - which is in the 2nd level of
hierarchy (because it is installed between ICs and HCs) , and has a cross connect field
color of gray
Horizontal Cross Connects (HC [FD - Floor Distributor]) that go to work areas/
telecommunications outlet are referred to as permanent links, which has a cross
connect field color of blue. The maximum allowable horizontal cable length is 90 m (295
ft), however some cables (Cat 8) may limit to a length of 30 m (100 ft)
Work Areas - are typically 10 m squared / 100 ft squared. A minimum of two
telecommunications outlet/connectors is recommended per work area. The cable
provided to each individual work area shall consist of a 4-pair 100 ohm balanced
category 5e minimum ( category 6a or higher recommended) and one of the following: a
, 4- pair 100-ohm balanced category 5e or better cable, two or more strands of 50/125
micron multimode OM2 fiber (OM4 recommended), or two or more strands of
singlemode (OS1) fiber.
If other types of cable (75-ohm coaxial) is required it may be installed in addition to the
cables listed previously.
Using the same category or class across all components of the channel is
recommended, as this minimizes impedance mismatch. The maximum equipment cord
length to a work area is 16.5 ft except in particular cases like MUTOAs.
UTC - Undercarpet Telecommunications Cable is marked in many jurisdictions as
CMUC and should not be the first choice in bringing cable to a work area because of its
susceptability to damage and limited flexibility for MACs. The interconnectin point
between horizontal cabling and UTC is a transition point (TP). TPs should be located in
a position to limit the length of UTC less than 10 m (33 ft).
CP - Consolidation point is a horizontal cabling interconnection device perminantly
installed in close proximity to the telecommunications outlet to provide a convenient
method for termination of horizontal cabling when required by modular furniture
systems. A CP is not used as a cross connect location and should be limited to sercving
a maximum of 12 work areas.
MUTOA - allows work area cables to extend beyond 5 m (16.5 ft) depending on the
length of the horizontal cable and is used in open office spaces where there are
frequent reconfiguration.
American Wire Gauge (AWG)
Roughly represents the number of steps that were involved in the process of wire
drawing.
Smaller Numbers: Larger wires (fewer drawing steps are involved)
Larger Numbers: Smaller wires (more drawing steps are involved)
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