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Infrared transmissions are being used increasingly for ____________________ connections that enable portable computing devices to communicate with wired computers or peripheral devices, such as printers.

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How do narrowband radio LAN technologies work?

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Narrowband radio (also called "single-fr...

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Whether STP or UTP, twisted-pair network cabling most commonly uses ____ connectors to plug into computer network interfaces or other networked devices.


A) BNC
B) MT-RJ
C) RJ-45
D) RJ-11

E) A) and B)
F) None of the above

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The ____ Worldwide Interoperability for Microwave Access (WiMax) standard, comes in two flavors.


A) 802.3
B) 802.5
C) 802.11
D) 802.16

E) B) and C)
F) B) and D)

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____ is not a fiber-optic connector.


A) BNC
B) ST
C) SC
D) LC

E) A) and C)
F) All of the above

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Match each term with the correct statement below.

Premises
trades electrical pulses for their optical equivalents.
was the predominant form of network cabling for many years.
consists of one or more pairs of insulated strands of copper wire twisted around one another.
measures the amount of time a signal takes to travel from one end of the cable to another.
receives incoming signals on one cable segment and refreshes them before retransmitting them on another cable segment.
how many bits or bytes of information a cable can carry over a unit of time.
detects weak signals, strengthens those signals, and then rebroadcasts them.
refers to any protective layers wrapped around a cable to protect it from external interference
each physical connection adds to the attenuation of signals on a cable segment.
Responses
amplifier
fiber-optic cable
insertion loss
bandwidth
coaxial
repeater
shielding
twisted-pair
latency

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trades electrical pulses for their optical equivalents.
was the predominant form of network cabling for many years.
consists of one or more pairs of insulated strands of copper wire twisted around one another.
measures the amount of time a signal takes to travel from one end of the cable to another.
receives incoming signals on one cable segment and refreshes them before retransmitting them on another cable segment.
how many bits or bytes of information a cable can carry over a unit of time.
detects weak signals, strengthens those signals, and then rebroadcasts them.
refers to any protective layers wrapped around a cable to protect it from external interference
each physical connection adds to the attenuation of signals on a cable segment.

The bend radius of fiber-optic cable is ____ degrees per foot.


A) 15
B) 30
C) 45
D) 60

E) A) and B)
F) All of the above

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Describe the twisted-pair (TP)cable network media.

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The most basic form of twisted-pair (TP)...

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____ transmission systems use analog techniques to encode binary 1s and 0s across a continuous range of values.


A) Direct sequence
B) Electromagnetic
C) Baseband
D) Broadband

E) A) and B)
F) B) and C)

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With respect to structured cabling, the ____ is where computer workstations and other user devices are located.


A) work area
B) telecommunications closet
C) equipment room
D) entrance facility

E) C) and D)
F) B) and D)

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____ is not a fiber-optic connector.


A) MIC
B) SMA
C) MT-RJ
D) RJ-45

E) C) and D)
F) B) and C)

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The maximum cable length for Category 5, 5e and 6 UTP cables is 200 meters.

A) True
B) False

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With respect to structured cabling, the ____ provides connectivity to computer equipment in the nearby work area.


A) cable plant
B) telecommunications closet
C) equipment room
D) entrance facility

E) None of the above
F) A) and B)

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Coaxial cable consists of a single conductor at the core, surrounded by an insulating layer, braided metal shielding, and an outer cover (usually called the ____) .


A) braiding
B) sheath
C) insulation
D) conduit

E) All of the above
F) B) and C)

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With respect to structured cabling, the ____ houses servers, routers, switches, and other major network equipment and serves as a connection point for backbone cabling running between TCs.


A) work area
B) cable plant
C) equipment room
D) entrance facility

E) B) and D)
F) A) and D)

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The frequency of the wave forms used for communication is measured in cycles per second usually expressed as Watts.

A) True
B) False

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Spread-spectrum radio addresses several weaknesses of single-frequency communications, whether high or low power.

A) True
B) False

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What is structured cabling? What are its components?

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Structured cabling specifies how cabling...

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With respect to structured cabling, what is the role of backbone cabling?

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Backbone cabling (or vertical cabling)in...

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IEEE stands for __________________________________________________.

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Institute ...

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Showing 21 - 40 of 46

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