CETa Practice Test questions and
answers
What is the preferred method for removing solder from a component attached to a circuit card
assembly (CCA)?
A.
Motorized vacuum extraction
B.
Wicking
C.
Manual extraction vacuum
D.
Shaking the CCA when solder melt is achieved ✔✔A.
Motorized vacuum extraction
To overcome noise, distortion and cost of maintenance in frequency division multiple systems,
________ systems were developed.
A.
time-division multiplex
B.
phase-time division
C.
code division multiple access
D.
,quadrature amplitude modulation ✔✔A.
time-division multiplex
What does LEC stand for?
A.
Local exchange carrier
B.
Local essential channel
C.
Local effective communication
D.
Local exchange circuit ✔✔A.
Local exchange carrier
Circuit switch networks maintain only _____ path(s) for the duration of the call.
A.
two
B.
one
C.
seven
D.
six ✔✔B.
one
,What are the three fundamental types of wireless access technologies?
A.
FDMA, QMA and TDMA
B.
FDMA, CDMA and WPA
C.
FDMA, L2TP and TDMA
D.
FDMA, CDMA and TDMA ✔✔D.
FDMA, CDMA and TDMA
In the kinescope, the ________ intensity of an electron beam from an electron gun is
modulated in accordance with the ________ variations of signals received by a control
electrode, or modulator.
A.
current, frequency
B.
voltage, amplitude
C.
phase, frequency
D.
current, amplitude ✔✔D.
current, amplitude
, An electromagnetic wave is composed of an electromagnetic and electric field, which are at
______ from one another.
A.
90 degrees
B.
180 degrees
C.
270 degrees
D.
45 degrees ✔✔A.
90 degrees
A vertically polarized antenna has a magnetic field that is at a _____ angle to the axis of the
antenna.
A.
22.5 degree
B.
90 degree
C.
45 degree
D.
135 degree ✔✔B.
90 degree
The 4-meter frequency band is also known as the _____ band.
answers
What is the preferred method for removing solder from a component attached to a circuit card
assembly (CCA)?
A.
Motorized vacuum extraction
B.
Wicking
C.
Manual extraction vacuum
D.
Shaking the CCA when solder melt is achieved ✔✔A.
Motorized vacuum extraction
To overcome noise, distortion and cost of maintenance in frequency division multiple systems,
________ systems were developed.
A.
time-division multiplex
B.
phase-time division
C.
code division multiple access
D.
,quadrature amplitude modulation ✔✔A.
time-division multiplex
What does LEC stand for?
A.
Local exchange carrier
B.
Local essential channel
C.
Local effective communication
D.
Local exchange circuit ✔✔A.
Local exchange carrier
Circuit switch networks maintain only _____ path(s) for the duration of the call.
A.
two
B.
one
C.
seven
D.
six ✔✔B.
one
,What are the three fundamental types of wireless access technologies?
A.
FDMA, QMA and TDMA
B.
FDMA, CDMA and WPA
C.
FDMA, L2TP and TDMA
D.
FDMA, CDMA and TDMA ✔✔D.
FDMA, CDMA and TDMA
In the kinescope, the ________ intensity of an electron beam from an electron gun is
modulated in accordance with the ________ variations of signals received by a control
electrode, or modulator.
A.
current, frequency
B.
voltage, amplitude
C.
phase, frequency
D.
current, amplitude ✔✔D.
current, amplitude
, An electromagnetic wave is composed of an electromagnetic and electric field, which are at
______ from one another.
A.
90 degrees
B.
180 degrees
C.
270 degrees
D.
45 degrees ✔✔A.
90 degrees
A vertically polarized antenna has a magnetic field that is at a _____ angle to the axis of the
antenna.
A.
22.5 degree
B.
90 degree
C.
45 degree
D.
135 degree ✔✔B.
90 degree
The 4-meter frequency band is also known as the _____ band.
