CIT 345 FINAL EXAM WITH QUESTIONS AND
ANSWERS TESTED AND APPROVED NEWLY
MODIFIED EXAM
The Wi-Fi Alliance is responsible for which of the following certification
programs? --ANSWER--B. Voice Personal E. WMM-PS
A wave is divided into degrees. How many degrees make up a complete wave?
--ANSWER--D. 360
What are the advantages of using unlicensed frequency bands for RF
transmissions? (Choose all that apply.) --ANSWER--B. There is no additional
financial cost. C. Anyone can use the frequency band.
The OSI model consists of how many layers? --ANSWER--C. Seven
What are some results of multipath interference? (Choose all that apply.) --
ANSWER--B. Upfade C. Excessive retransmissions
What term best defines the linear distance traveled in one positive-to-negative-
to-positive oscillation of an electromagnetic signal? --ANSWER--
D.Wavelength
Page | 1
,Which of the following statements are true about amplification? (Choose all that
apply.) --ANSWER--B. RF amplifiers require an outside power source. C.
Antennas are passive gain amplifiers that focus the energy of a signal in one
direction. E. Signal strength may passively increase because of multipath
upfade.
A standard measurement of frequency is called what? --ANSWER--A. Hertz
When an RF signal bends around an object this propagation behavior is known
as what?, --ANSWER--D. Diffraction
When the multiple RF signals arrive at a receiver at the same time and are with
the primary wave the result can be of the primary signal., --ANSWER--F. 180
degrees out of phase, cancellation
Which of the following statements are true? (Choose all that apply.) --
ANSWER--B. When downfade occurs, the final received signal will never be
stronger than the original transmitted signal. C. When upfade occurs, the final
received signal will never be stronger than the original transmitted signal.
What is the frequency of an RF signal that cycles 2.4 million times per second?
--ANSWER--B. 2.4 MHz
What is the best example of a time domain tool that could be used by an RF
engineer? --ANSWER--A. Oscilloscope
Page | 2
,What are some objects or materials that are common causes of reflection?
(Choose all that apply.) --ANSWER--A. Metal C. Asphalt road D. Lake
Which of these propagation behaviors can result in multipath? (Choose all that
apply.) --ANSWER--A. Refraction B. Diffraction C. Reflection D. Scattering
Which behavior can be described as an RF signal encountering a chain link
fence causing the signal to bounce into multiple directions?, --ANSWER--B.
Scatter
Which 802.11 radio technologies are most impacted by the destructive effects of
multiparty? (Choose all that apply.) --ANSWER--A. 802.11a B. 802.11b C.
802.11g
Which of the following wireless communications parameters and usage are
typically governed by a local regulatory authority? (Choose all that apply.) --
ANSWER--A. Frequency B. Bandwidth C. Maximum transmit power D.
Maximum EIRP E. Indoor/outdoor usage
Which of the following can cause refraction of an RF signal traveling through
it? (Choose all that apply.) --ANSWER--A. Shift in air temperature B. Change
in air pressure C. Humidity D. Smog
Page | 3
, Which of the following statements are true about free space path loss? (Choose
all that apply.) --ANSWER--A. RF signals will attenuate as they travel, despite
the lack of attenuation caused by obstructions. D. Path loss occurs at a
logarithmic rate.
802.11 technology is typically deployed at which fundamental layer of
networkarchitecture? --ANSWER--C. Access
Which organization is responsible for enforcing maximum transmit power rules
in an unlicensed frequency band? --ANSWER--E. None of the above
802.11 wireless bridge links are typically associated with which network
architecture layer? --ANSWER--A. Core
The 802.11-2007 standard was created by which organization? --ANSWER--A.
IEEE
What organization ensures interoperability of WLAN products? --ANSWER--
D. Wi-Fi Alliance
What type of signal is required to carry data? --ANSWER--C. Carrier signal
Page | 4
ANSWERS TESTED AND APPROVED NEWLY
MODIFIED EXAM
The Wi-Fi Alliance is responsible for which of the following certification
programs? --ANSWER--B. Voice Personal E. WMM-PS
A wave is divided into degrees. How many degrees make up a complete wave?
--ANSWER--D. 360
What are the advantages of using unlicensed frequency bands for RF
transmissions? (Choose all that apply.) --ANSWER--B. There is no additional
financial cost. C. Anyone can use the frequency band.
The OSI model consists of how many layers? --ANSWER--C. Seven
What are some results of multipath interference? (Choose all that apply.) --
ANSWER--B. Upfade C. Excessive retransmissions
What term best defines the linear distance traveled in one positive-to-negative-
to-positive oscillation of an electromagnetic signal? --ANSWER--
D.Wavelength
Page | 1
,Which of the following statements are true about amplification? (Choose all that
apply.) --ANSWER--B. RF amplifiers require an outside power source. C.
Antennas are passive gain amplifiers that focus the energy of a signal in one
direction. E. Signal strength may passively increase because of multipath
upfade.
A standard measurement of frequency is called what? --ANSWER--A. Hertz
When an RF signal bends around an object this propagation behavior is known
as what?, --ANSWER--D. Diffraction
When the multiple RF signals arrive at a receiver at the same time and are with
the primary wave the result can be of the primary signal., --ANSWER--F. 180
degrees out of phase, cancellation
Which of the following statements are true? (Choose all that apply.) --
ANSWER--B. When downfade occurs, the final received signal will never be
stronger than the original transmitted signal. C. When upfade occurs, the final
received signal will never be stronger than the original transmitted signal.
What is the frequency of an RF signal that cycles 2.4 million times per second?
--ANSWER--B. 2.4 MHz
What is the best example of a time domain tool that could be used by an RF
engineer? --ANSWER--A. Oscilloscope
Page | 2
,What are some objects or materials that are common causes of reflection?
(Choose all that apply.) --ANSWER--A. Metal C. Asphalt road D. Lake
Which of these propagation behaviors can result in multipath? (Choose all that
apply.) --ANSWER--A. Refraction B. Diffraction C. Reflection D. Scattering
Which behavior can be described as an RF signal encountering a chain link
fence causing the signal to bounce into multiple directions?, --ANSWER--B.
Scatter
Which 802.11 radio technologies are most impacted by the destructive effects of
multiparty? (Choose all that apply.) --ANSWER--A. 802.11a B. 802.11b C.
802.11g
Which of the following wireless communications parameters and usage are
typically governed by a local regulatory authority? (Choose all that apply.) --
ANSWER--A. Frequency B. Bandwidth C. Maximum transmit power D.
Maximum EIRP E. Indoor/outdoor usage
Which of the following can cause refraction of an RF signal traveling through
it? (Choose all that apply.) --ANSWER--A. Shift in air temperature B. Change
in air pressure C. Humidity D. Smog
Page | 3
, Which of the following statements are true about free space path loss? (Choose
all that apply.) --ANSWER--A. RF signals will attenuate as they travel, despite
the lack of attenuation caused by obstructions. D. Path loss occurs at a
logarithmic rate.
802.11 technology is typically deployed at which fundamental layer of
networkarchitecture? --ANSWER--C. Access
Which organization is responsible for enforcing maximum transmit power rules
in an unlicensed frequency band? --ANSWER--E. None of the above
802.11 wireless bridge links are typically associated with which network
architecture layer? --ANSWER--A. Core
The 802.11-2007 standard was created by which organization? --ANSWER--A.
IEEE
What organization ensures interoperability of WLAN products? --ANSWER--
D. Wi-Fi Alliance
What type of signal is required to carry data? --ANSWER--C. Carrier signal
Page | 4
