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
ELEMENTS OF A SINGLE OPTICAL FIBER
the thin glass center of the fiber where the light travels
core
ELEMENTS OF A SINGLE OPTICAL FIBER
Each strand can pass a signal in only one direction, so
fiber optic cable on a network typically consists of at
least _____ strands: one for sending and one for
receiving.
two
Bundles that are consist of hundreds or thousands of
optical fibers
Optical Cables
The cable’s outer sheathing that protects the optical
cables
jacket
TYPES OF OPTICAL CABLES
• A barrel shaped, similar to a BNC connector
ST connectors
Has a squared face and is easier to connect in a confined space.
SC Connectors
