Unit 3 Exercise 1
Application (in terms of Cabling Infrastructure) for a building or campus it consist of many smaller elements all standardized according to a specification these are called subsystems
Unshielded twisted - pair is the most common kind of copper telephone wiring two insulated coper wires are twisted around each other
Shielded Twisted-pair is a special kind of copper telephone wiring used in some business installations an outer covering or shield is add to ordinary twisted pair telephone wires the shield functions as a ground
Fiber-optic cable Refers to the medium and the technology associated with the transmission of information as a light impulses along a glass or plastic wire or fiber
Dark fiber unused fiber-optic cable often times companies lay more lines than what is needed in order to curb costs of having to do it again
Coaxial cable is a type of cable for high bandwidth data transmission use that typically consist of a single copper wire that is surrounded by a layer of insulation and then grounded shield odf braided wire
Plenum in building construction a plenum is a separate space provided for air circulation for heating, ventilation and air conditioning typically provided in the space between the stctual ceiling and drop down ceiling and may also be u der a raised floor
Riser suitable for use inside walls and in open areas bu not in places where air circulates such as a suspended ceiling riser –rated cable is fire resistant but gives off noxious fumes when overheated
Rip cord of an optical cable a parallel cord of strong yarn that is situated under the jackets of the cable
Core the conduction wire with its insulation in an eclectic cable
Attenuation is a telecommunication term that refers to reduction in signal strength commonly occurring while transmitting analog or digital signal
Noise is any disturbance that interferes with data transmission and corrupts of the signal
Headroom also called attenuation-to-crosstalk ratio is the difference expressed asa figure in decibels between the signal attenuation produced by a wire or cable transmission medium and the near-end crosstalk
Ansi has served as a coordinator of the U.S. privet sector voluntary Standardization system for more than 90 years
Nfpa the national fire protection association is a United States trade association albeit with some international members that creates and maintains privet copyrighted standard and codes for usage and adoption by local governments
FCC is the federal communications commission. An independent agency of the United States government created by congressional statute to regulate interstate and international communications by radio, television, wire, satellite and cable in all fifty states.
NIST is the National Institute of Standards and Technology. It is the measurement standards laboratory also known as the National Metrological institute which is a non-regulated agency of the U.S department of Commerce.
OSHA the Occupational Safety and Health Administration is a federal organization that ensures safe and healthy working conditions.
Equipment Room is a room or space within a building for a storage or installation of electronic devices.
Topology is the shape of a local area network or other communication system topologies are either physical or logical