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WorksheetsTDC1231 Lec3 Quiz
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Transmission media are usually categorized as _______.
a)
fixed or unfixed
b)
guided or unguided
c)
determinate or indeterminate
d)
metallic or nonmetallic
2.
Transmission media lie below the _______ layer.
a)
physical
b)
network
c)
transport
d)
application
3.
_______ cable consists of an inner copper core and a second conducting outer sheath.
a)
Twisted-pair
b)
Coaxial
c)
Fiber-optic
d)
Shielded twisted-pair
4.
In fiber optics, the signal is _______ waves.
a)
light
b)
radio
c)
infrared
d)
very low-frequency
5.
Which of the following is not a guided medium?
a)
twisted-pair cable
b)
coaxial cable
c)
fiber-optic cable
d)
atmosphere
6.
Twisting in a twisted-pair help reduce the __________.
a)
length
b)
cost
c)
noise
d)
None of the choices are correct
7.
Noise in a coaxial cable is reduced by _______.
a)
twisting the cable
b)
the outer conductor
c)
the inner conductor
d)
None of the choices are correct
8.
RG rating is used in _________ cable.
a)
twisted-pair
b)
coaxial
c)
fiber-optic
d)
None of the choices are correct
9.
The infrared wave has frequencies ________ microwave.
a)
below
b)
above
c)
the same as
d)
None of the choices are correct
10.
Unguided media is used in _______ and signals are normally broadcast through _______.
a)
wired communication; free space
b)
wired communication; fiber-optic cable
c)
wireless communication; free space
d)
wireless communication; coaxial cable
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