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Until recently, — were the only medium used to connect devices on networks.
cables
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A wide variety of networking cables are available. — cables use COPPER to transmit data.
Coaxial and twisted-pair
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— cables use GLASS OR PLASTIC to transmit data.
Fiber-optic
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These cables differ in —3
bandwidth, size, and cost.
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You need to know what type of cable to use based on the —.
job requirements
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You also need to be able to —2 problems along the way.
troubleshoot and repair
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is a type of copper cabling that is used for TELEPHONE COMMUNICATIONS and most ETHERNET networks.
Twisted pair
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A — forms a CIRCUIT that transmits data.
pair of wires
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The pair is — to provide protection against —, the noise generated by adjacent pairs of wires in the cable.
twisted crosstalk
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Pairs of copper wires are encased in — and are twisted together.
color coded plastic insulation
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An — protects the BUNDLES of twisted pairs
outer jacket
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UNSHIELDED TWISTED PAIR (UTP) is the cable that has
TWO OR FOUR PAIRS OF WIRES.
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This type of cable relies solely on the CANCELLATION EFFECT
UTP
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UTP relies solely on the cancellation effect produced by the twisted-wire pairs that limits SIGNAL DEGRADATION caused by — and —.
electromagnetic interface (EMI) radio frequency interference (RFI)
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— is the most COMMONLY used cabling in NETWORKS.
UTP
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UTP cables have a range of
328 feet (100 m).
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With — each pair of wire is wrapped in METALLIC FOIL to better shield the wires from noise.
shielded twisted pair (STP),
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In stp, — are then wrapped in an overall metallic braid or foil. STP reduces — from within the cable.
Four pairs of wires electrical noise
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is a copper-cored cable surrounded by a HEAVY SHIELDING.
Coaxial cable
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is used to CONNECT THE COMPUTERS to the rest of the NETWORK.
Coaxial cable
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COAXIAL CABLES
Thicknet (10BASE5) Thinnet (10BASE2) RG-59 RG-6
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is a coaxial cable used in networks operating at 10 MBPS, with a maximum length of 500 METERS.
Thicknet (10BASE5)
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is a coaxial cable operating at 10 MBPS, ml 185 METERS.
Thinnet (10BASE2)
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is most commonly used for CABLE TELEVISION in the U.S.
RG-59
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is LESS SUSCEPTIBILITY TO INTERFERENCE.
RG-6
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An — is a glass or plastic conductor that transmits INFORMATION using LIGHT.
optical fiber
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has one or more optical fiber ENCLOSED in a SHEATH or jacket.
Fiber optic cable
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Fiber optic cable Because it is made of GLASS FIBER-OPTIC cable is not affected by —.
EMI or RFI
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ALL SIGNALS are converted to — to enter the cable and are converted back into — when they leave it.
light pulses electrical signals
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This means that FIBER-OPTIC CABLE can deliver signals that are clearer, and can go farther, without compromising the —
clarity of signals.
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— can reach distances of several miles or kilometers before the signal needs to be REGENERATED.
Fiber-optic cable
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usually is more expensive to use than copper cable, and the connectors are more costly and HARDER TO ASSEMBLE.
Fiber-optic cable
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Common CONNECTORS FOR FIBER-OPTIC networks are —.
SC, ST, and LC
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SC, ST, and LC are —, which allows data to flow in only — Therefore, — cables are needed.
HALF-DUPLEX ONE DIRECTION. two
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Glass Fiber Optic Cable
Multimode Single-mode
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is the cable that has a thicker core than single-mode cable.
Multimode
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It is easier to make SIMPLER LIGHT SOURCES LIGHT EMITTING DIODES (LEDs) works few KILOMETERS OR LESS.
Multimode
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is the cable that has a VERY THIN CORE.
Single-mode
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It is harder to make, uses LASERS as a light source, and can transmit signals DOZENS OF KILOMETERS with ease.
Single-mode