NEXT DECK Flashcards
- is the most common MEDIUM through which voice and data
usually move from one NETWORK DEVICE to another. - Serves as the pipeline of a telecommunication system.
Cable
- DeviceS that connect CABLE to the NETWORK DEVICE (e.g., computer, printer, entertainment center, and so forth).
- May come with the equipment purchased or it may be necessary to purchase them individually.
connectors
_______________ is the most common medium through which voice and data usually mHas been the PRINCIPAL telecommunications transmission medium.
• Consists of one or more pairs of solid copper wires.
• ove from one network device to another.
• Serves as the pipeline of a telecommunication system.
copper wiring
_______ ______ cable consists of pairs of copper wires
that are twisted to certain specifications. Each pair is
twisted with a specified number of twists per inch to
help eliminate interference from ________ pairs and
other electrical devices;
copper wiring, twisted pair, adjacent
(T/F) In copper wiring, the tighter the twisting, the
higher the supported transmission rate but the greater
the cost.
T ;-)
In copper wiring:
-Each signal on a twisted pair requires _____ wires.
- Twisted pair cable has _____ pairs of wires inside the
jacket.
- Twisted pair comes with each pair uniquely ___________ when it is packaged in multiple pairs.
both
4
color coded
-A twisted pair is enclosed in a shield.
- An outer covering or shield is added to the ordinary twisted
pair wires; the shield functions as a _______.
- Suitable for environments with electrical ________;
however, the extra shielding can make the cables quite bulky.
- Commonly used in Token Ring networks and UTP in Ethernet
networks, where it is referred to as 10baseT.
shielded twisted pair wiring, ground, interference
=Consists of multiple pairs of twisted
insulated copper conductors bound in a
single SHEATH.
• Unshielded from electromagnetic waves
and therefore is sensitive to electrical
interference.
• Adequate for basic voice, fax, or data
communications.
unshielded twisted pair wiring
___________ is the U.S. standard for wire conductor size applied to copper electrical power and telephone wiring.
- The gauge refers to wire ________: the higher the
gauge number, the ______ the wire.
- Thicker wire carries current more efficiently (because it
has less electrical resistance over a specific length), a
thicker wire is more efficient for longer distances.
American Wire Gauge, thickness, thinner
This wiring has two conductors: an inner solid wire surrounded by an outer braided metal sheath.
• The conductors both run concentrically along the same
axis; thus the name _________.
• Insulation separates the two _________ conductors, and a
hard casing protects the entire cable.
• Several _________ can be arranged in bundles
protected by an outer sheathing, called a ________.
coaxial cable, coaxial, concentric, coaxial cables, jacket
-Also referred to as thicknet.
- 10Base5 refers to the specifications for thick coaxial cable. The 5 refers to the maximum segment length being ________ (1635 ft).
- Thick coaxial cable has an extra protective plastic cover that helps keep moisture away from the center conductor.
Thick Coaxial Cable, 500
A better choice when running longer lengths in a linear
network.
Thick Coaxial Cable
Does not bend easily and is difficult to install.
• Not commonly used except as a backbone within and between buildings.
Thick Coaxial Cable
-A type of coax cable with an additional outer copper
braid insulated from SIGNAL CARRYING CONDUCTORS.
- It has a core conductor and _____ concentric conductive
shields.
triax cable, 2
-A type of communication transmission cable consisting of two center conductors surrounded by an insulating SPACER, which in turn is surrounded by a tubular outer conductor (usually a braid, foil, or both).
- The entire assembly is covered with an insulating and protective outer layer.
- Similar to coaxial cable except that there are _____ conductors at the center.
Twin Axial Cable (Twinax), two
______________ is very effective at carrying many analog
signals at high frequencies.
Coaxial cable
Coaxial cable has a much higher _________ to carry more
data, and offers greater protection from noise and interference. It is highly resistant to __________ and
can support greater cable lengths between network devices
than twisted pair copper cable.
bandwidth, signal interference
High-capacity coaxial cable is widely used in cable television systems because it is capable of carrying many ____ and ____ signals simultaneously.
TV, radio
The most common type of connector used with coaxial
cables.
Bayonet Neil-Concelman ( BNC Connector)
It has a pin that connects to the primary conducting
(core) wire and then is locked in place with an outer
ring that turns into locked position.
Bayonet Neil-Concelman (BNC) Connector
Different types of adapters are available for BNC
connectors, including a ___-connector, _____ connector,
and ________.
T, barrel, terminator
Are long, thin strands of very pure silicon glass or plastic
about the diameter of a human hair.
optical fibers
ELEMENTS OF A SINGLE OPTICAL FIBER
the outer material surrounding the core that reflects the
light back into the core
cladding
ELEMENTS OF A SINGLE OPTICAL FIBER
a plastic coating that protects the fiber from damage
and moisture
buffer coating
