True/False Indicate whether the
statement is true or false.
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1.
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The maximum cable length for Category 5, 5e and 6 UTP cables is 200
meters.
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2.
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Fiber-optic cable eliminates the possibility of electronic eavesdropping.
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3.
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The cable plant is the combination of installed network cables, connectors,
patch panels, wall jacks, and other media components.
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4.
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The frequency of the wave forms used for communication is measured in cycles per
second usually expressed as Watts.
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5.
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Spread-spectrum radio addresses several weaknesses of single-frequency
communications, whether high or low power.
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6.
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The 1997 802.16 Wireless Networking Standard is also referred to as Wireless
Fidelity (Wi-Fi).
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7.
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Terrestrial microwave systems use tight-beam, high-frequency signals to link
sender and receiver.
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Multiple Choice Identify the
choice that best completes the statement or answers the question.
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8.
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Each type of cable can transport data only so far before its signal begins to
weaken beyond where it can be read accurately; this phenomenon is called ____.
a. | attenuation | c. | insertion loss | b. | bandwidth | d. | latency |
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9.
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____ transmission uses a digital encoding scheme at a single fixed frequency,
where signals take the form of discrete pulses of electricity or light.
a. | Analog | c. | Baseband | b. | Electromagnetic | d. | Broadband |
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10.
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____ transmission systems use analog techniques to encode binary 1s and 0s
across a continuous range of values.
a. | Direct sequence | c. | Baseband | b. | Electromagnetic | d. | Broadband |
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11.
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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 | c. | insulation | b. | sheath | d. | conduit |
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12.
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Shielding works like a form of built-in ____, a type of metal or plastic pipe
built specifically to contain cabling.
a. | braiding | c. | insulation | b. | sheath | d. | conduit |
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13.
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10Base5 refers to ____.
a. | thicknet | c. | Category 5 UTP | b. | thinnet | d. | Category 6 UTP |
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14.
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____ encloses each pair of wires within a foil shield as well as an enclosing
insulating sheath.
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15.
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10BaseT refers to ____.
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16.
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Category ____ cable is labeled as voicegrade.
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17.
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Category ____ cable is labeled as datagrade.
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18.
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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 | c. | RJ-45 | b. | MT-RJ | d. | RJ-11 |
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19.
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____ are special RJ-45-terminated TP cables that permit modular cables to
stretch between wall plates and equipment.
a. | Jack couplers | c. | Patch panels | b. | Wall plates | d. | Patch cables |
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20.
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The bend radius of fiber-optic cable is ____ degrees per foot.
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21.
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____ is not a fiber-optic connector.
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22.
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____ is not a fiber-optic connector.
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23.
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The TIA/EIA developed the document “____ Commercial Building Wiring
Standard”, which specifies how network media should be installed to maximize performance and
efficiency.
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24.
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With respect to structured cabling, the ____ is where computer workstations and
other user devices are located.
a. | work area | c. | equipment room | b. | telecommunications closet | d. | entrance
facility |
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25.
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With respect to structured cabling, the ____ provides connectivity to computer
equipment in the nearby work area.
a. | cable plant | c. | equipment room | b. | telecommunications closet | d. | entrance
facility |
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26.
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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 | c. | equipment room | b. | cable plant | d. | entrance
facility |
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27.
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With respect to structured cabling, a(n) ____ is the location of the cabling and
equipment that connects a corporate network to a third-party telecommunications provider.
a. | work area | c. | equipment room | b. | cable plant | d. | entrance
facility |
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28.
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The ____ Worldwide Interoperability for Microwave Access (WiMax) standard, comes
in two flavors.
a. | 802.3 | c. | 802.11 | b. | 802.5 | d. | 802.16 |
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Completion Complete each
statement.
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29.
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EMI stands for ______________________________.
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30.
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Coaxial cable is often called “____________________” for
short.
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31.
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IEEE stands for __________________________________________________.
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32.
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A(n) ____________________ cable is used to connect a computer’s network
interface card to a jack in the work area or to connect from a patch panel to a hub or switch in the
wiring closet.
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33.
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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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34.
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Direct-sequence modulation breaks data into fixed-size segments called
____________________ and transmits the data on several different frequencies at the same time.
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35.
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Instead of aiming at transmitters or receivers within a clear line of sight on
the ground, satellite microwave systems send and receive data from ____________________ satellites
that maintain fixed positions in the sky.
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Matching
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Match each term with the correct statement below. a. | shielding | f. | twisted-pair | b. | fiber-optic cable | g. | latency | c. | bandwidth | h. | coaxial | d. | insertion loss | i. | repeater | e. | amplifier |
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36.
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how many bits or bytes of information a cable can carry over a unit of
time.
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37.
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measures the amount of time a signal takes to travel from one end of the cable
to another.
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38.
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each physical connection adds to the attenuation of signals on a cable
segment.
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39.
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receives incoming signals on one cable segment and refreshes them before
retransmitting them on another cable segment.
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40.
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detects weak signals, strengthens those signals, and then rebroadcasts
them.
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41.
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was the predominant form of network cabling for many years.
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42.
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refers to any protective layers wrapped around a cable to protect it from
external interference
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43.
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consists of one or more pairs of insulated strands of copper wire twisted
around one another.
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44.
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trades electrical pulses for their optical equivalents.
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