IEC Year 4 Final Prep Questions And Answers Well Illustrated.
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IEC Year 4
IEC Year 4 Final Prep Questions And Answers Well Illustrated.
terminating __ cable is more dificult.
copper
fiber optic - correct answer. fiber optic
Cat3, 5e and 6 UTP cables used for __ gernerally contain solid conductors
a. patch cords
b. local area networks - correct answe...
IEC Year 4 Final Prep Questions And
Answers Well Illustrated.
terminating __ cable is more dificult.
copper
fiber optic - correct answer. fiber optic
Cat3, 5e and 6 UTP cables used for __ gernerally contain solid conductors
a. patch cords
b. local area networks - correct answer. local area networks
audio systems can utilize __ cables
a. CMR
b.CMG
c.CMP
D. any of these - correct answer. any of these
for Voice/Data/Video network projects the electrical contractor should
a. understand his responsibilities for a successful completion of the project
b. determine if the work is to be performed under his contruction permit.
c. determine if he is to install and terminate the cabling
d. anll of these - correct answer. all of these
the maximum length limitation for RG-6 cable is __ feet - correct answer. 750
__ optical fiber cables contain optical fibers and current carrying electrical conductors -
correct answer. composite
CATV coax cable is constructed with a _ shield - correct answer. aluminum
,for a coaxial cable the __ serves as a conductor - correct answer. both center
conductor and shielding
the pairs in CAT _ UTP cables have the least amount of twist - correct answer. 3
from the head-end of a CCTV system _ - correct answer. sperate cables are installed
to each camera
listed communications cables installed in risers shall be _ - correct answer. either
encased in metal raceway or located in a fireproof shaft having firestops at each floor
cat _ UTP cables are primarily used for analog telephone systems - correct answer. 3
only
digital telephone networks inside a building utilize _ to maintain connection betweeen
each telephone. - correct answer. UTP cable
_ shall not be denied due to an accumulation of network powered broadband
communication cables. - correct answer. access to electrical equipment
if the maximum permitted tension is exceeded when installing UTP cable, the
performance can be affected due to _ - correct answer. increased impedance,
crosstalk, and attenuation
coaxial cable shall be permitted to deliver power to equipment that is direclt assoiciated
with the radio frequency distribution system if the voltage is not over _ volts and of the
current is supplied by a transformer or other device that has power limiting
characteristics - correct answer. 60 volts
the minimum bending radius for fiber optic cable is _ inches - correct answer.
according to manufacturer specs
CATV coax cable is terminated with type _ connectors - correct answer. F connectors
typical VDV networks include those provided for _ systems - correct answer.
computer, video, audio, telephone, and CATV
residential audio systems generally utilize _ ohm speakers - correct answer. 8 ohm
an audio system network can be utilized to provide _ - correct answer. paging/
emergency notification/ background music/ any of these
a _ system is used for serveillance and or recorded documentation - correct answer.
CCTV
a computer network can be _ - correct answer. either wireless or hardwired
,when used for a buisness facility's computer network the MDF may _ - correct answer.
any of these !
contain the client servers
be primary connection point for the internet provider
be connected to an IDF for large systems
a CATV netweork may utilize a head-end to provide pre-recorded information. this
information can be sent over a specific channel of the MATV system _ are typical
applications for an MATV system - correct answer. all of these
large hotels
dorms
inis
components of a basic network include _ - correct answer. all of these :
a public provider
devices
cable
a head-end
the maximum length limitation for RG-11 cable is _ feet - correct answer. 1000
a commonly used type of coaxial cable used for video applications is _ - correct answer.
all of these :
RG6/U
RG59/U
RG11/U
when installing coaxial cable the tesion applied when pulling can not exceed _ pounds -
correct answer. 90
CCTV coax cable is constructed with a _ shield - correct answer. copper
the construction of coaxial cable serves to prevent - correct answer. electromagnetic
interference
because it provides less signal loss, quad shield coaxial xable is used for _ tv signals -
correct answer. digital
when installing coaxial cable _ ends shall be labeled - correct answer. both
the maximum length limitation for RG-59 cable is _ feet - correct answer. 500
, when installing utp cable the tension applied when pulling can not exceed _ pounds -
correct answer. 25
when terminating utp cables the length of the wire to be untwisted for each pair is _ -
correct answer. not to exceed 1/2 inches
the wire colots used in 4 pair utp cables are_ - correct answer. blue oragne green and
brown
utp cables can be terminated with _ - correct answer. RJ-45 connectors or 110 blocks
a RJ-45 connector used to terminate utp cable has _ pins - correct answer. 8
cat _ utp cables are used for LANs - correct answer. 6 or 5E only
cat3, 5e and 6 utp cables used for _ contain stranded conductors - correct answer.
patch cords
an optical fiber cable transmits_ - correct answer. photons
_cable is more secure against eavesdropping because the cable must be physically
tapped to do so - correct answer. fiber optic
the installation costs for _ cable is less - correct answer. copper
fiber optic cables can be terminated with _ connectors - correct answer. any of these :
SC
FC
ST
optical fiber cable is permitted to be installed _ - correct answer. any of these :
as an aerial cable
underground in conduit
as direct burial cable
indoors
which of these fiber optical cables can transmit light the greatest distance - correct
answer. single-mode step index fiber
_ cable will not pick up electric noise or generate electromagnetic radiation that may
interfere with other signals - correct answer. fiber optics
the core of optical fiber cable is covered with _ - correct answer. cladding
the _ of optical fiber cable reflects the light throughout the length of cable - correct
answer. core
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