terminating __ cable is more dificult.
copper
fiber optic -answer- fiber optic
Cat3, 5e and 6 UTP cables used for __ gernerally contain solid conductors
a. patch cords
b. local area networks -answer- local area networks
audio systems can utilize __ cables
a. CMR
b.CMG
c.CMP
D. any o...
IEC year 4 Final Prep Exam Graded A
2024
terminating __ cable is more dificult.
copper
fiber optic -answer- ✔fiber optic
Cat3, 5e and 6 UTP cables used for __ gernerally contain solid conductors
a. patch cords
b. local area networks -answer- ✔local area networks
audio systems can utilize __ cables
a. CMR
b.CMG
c.CMP
D. any of these -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 -answer- ✔all of these
the maximum length limitation for RG-6 cable is __ feet -answer- ✔750
__ optical fiber cables contain optical fibers and current carrying electrical conductors -
answer- ✔composite
CATV coax cable is constructed with a _ shield -answer- ✔aluminum
for a coaxial cable the __ serves as a conductor -answer- ✔both center conductor and
shielding
the pairs in CAT _ UTP cables have the least amount of twist -answer- ✔3
from the head-end of a CCTV system _ -answer- ✔sperate cables are installed to each
camera
listed communications cables installed in risers shall be _ -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 -answer- ✔3 only
IEC year 4 final prep
,IEC year 4 final prep
digital telephone networks inside a building utilize _ to maintain connection betweeen
each telephone. -answer- ✔UTP cable
_ shall not be denied due to an accumulation of network powered broadband
communication cables. -answer- ✔access to electrical equipment
if the maximum permitted tension is exceeded when installing UTP cable, the
performance can be affected due to _ -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 -answer- ✔60 volts
the minimum bending radius for fiber optic cable is _ inches -answer- ✔according to
manufacturer specs
CATV coax cable is terminated with type _ connectors -answer- ✔F connectors
typical VDV networks include those provided for _ systems -answer- ✔computer, video,
audio, telephone, and CATV
residential audio systems generally utilize _ ohm speakers -answer- ✔8 ohm
an audio system network can be utilized to provide _ -answer- ✔paging/ emergency
notification/ background music/ any of these
a _ system is used for serveillance and or recorded documentation -answer- ✔CCTV
a computer network can be _ -answer- ✔either wireless or hardwired
when used for a buisness facility's computer network the MDF may _ -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 -answer- ✔all of these
large hotels
IEC year 4 final prep
,IEC year 4 final prep
dorms
inis
components of a basic network include _ -answer- ✔all of these :
a public provider
devices
cable
a head-end
the maximum length limitation for RG-11 cable is _ feet -answer- ✔1000
a commonly used type of coaxial cable used for video applications is _ -answer- ✔all of
these :
RG6/U
RG59/U
RG11/U
when installing coaxial cable the tesion applied when pulling can not exceed _ pounds -
answer- ✔90
CCTV coax cable is constructed with a _ shield -answer- ✔copper
the construction of coaxial cable serves to prevent -answer- ✔electromagnetic
interference
because it provides less signal loss, quad shield coaxial xable is used for _ tv signals -
answer- ✔digital
when installing coaxial cable _ ends shall be labeled -answer- ✔both
the maximum length limitation for RG-59 cable is _ feet -answer- ✔500
when installing utp cable the tension applied when pulling can not exceed _ pounds -
answer- ✔25
when terminating utp cables the length of the wire to be untwisted for each pair is _ -
answer- ✔not to exceed 1/2 inches
the wire colots used in 4 pair utp cables are_ -answer- ✔blue oragne green and brown
utp cables can be terminated with _ -answer- ✔RJ-45 connectors or 110 blocks
a RJ-45 connector used to terminate utp cable has _ pins -answer- ✔8
IEC year 4 final prep
, IEC year 4 final prep
cat _ utp cables are used for LANs -answer- ✔6 or 5E only
cat3, 5e and 6 utp cables used for _ contain stranded conductors -answer- ✔patch
cords
an optical fiber cable transmits_ -answer- ✔photons
_cable is more secure against eavesdropping because the cable must be physically
tapped to do so -answer- ✔fiber optic
the installation costs for _ cable is less -answer- ✔copper
fiber optic cables can be terminated with _ connectors -answer- ✔any of these :
SC
FC
ST
optical fiber cable is permitted to be installed _ -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 -answer-
✔single-mode step index fiber
_ cable will not pick up electric noise or generate electromagnetic radiation that may
interfere with other signals -answer- ✔fiber optics
the core of optical fiber cable is covered with _ -answer- ✔cladding
the _ of optical fiber cable reflects the light throughout the length of cable -answer-
✔core
communications wires and cables shall be seperated at least _ inches from conductors
of any electric light, power class 1, non power limited fire alarm, or medium power
networkd powered broadband communications circuits -answer- ✔2
openings around penetrations of coaxial cables anf catv raveways through fire resistant
rated _ shall be firestopped using approved methods to maintain the fire resistance
rating -answer- ✔any of these :
partitions
floors
walls
IEC year 4 final prep
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