CWAP-402 Certified Wireless Analysis
Professional Exam
Question 1. Which electromagnetic spectrum range is primarily utilized for
Wi-Fi communications?
A) Infrared
B) Microwave
C) Ultraviolet
D) Radiofrequency
Answer: B
Explanation: Wi-Fi operates in the microwave portion of the electromagnetic
spectrum, typically around 2.4 GHz and 5 GHz frequencies, facilitating
wireless data transmission.
Question 2. In RF concepts, what does the term 'wavelength' refer to?
A) The number of oscillations per second
B) The distance between successive crests of a wave
C) The amplitude of a wave
D) The phase difference between signals
Answer: B
Explanation: Wavelength is the physical distance between successive crests
, CWAP-402 Certified Wireless Analysis
Professional Exam
or troughs in a wave, inversely proportional to frequency, critical for antenna
design.
Question 3. Which factor most significantly affects signal propagation
through obstacles like walls?
A) Wavelength
B) Reflection
C) Diffraction
D) Absorption
Answer: D
Explanation: Absorption involves the conversion of RF energy into heat
within materials like walls, which diminishes signal strength as it passes
through obstacles.
Question 4. What is the primary characteristic of an omnidirectional
antenna?
A) Focused beam in one direction
B) Equal radiation in all directions
C) Multiple narrow beams
, CWAP-402 Certified Wireless Analysis
Professional Exam
D) High gain in a small area
Answer: B
Explanation: Omnidirectional antennas radiate RF energy equally in all
horizontal directions, ideal for covering broad areas.
Question 5. Which decibel measurement is used to express antenna gain?
A) dB
B) dBi
C) dBm
D) dBc
Answer: B
Explanation: dBi indicates gain relative to an isotropic radiator, reflecting how
much an antenna concentrates energy in a particular direction.
Question 6. In link budget analysis, what does the term 'path loss' refer to?
A) The total transmitted power
B) The reduction in signal strength as it propagates
C) The antenna gain
D) The noise floor level
, CWAP-402 Certified Wireless Analysis
Professional Exam
Answer: B
Explanation: Path loss quantifies the decrease in signal power over distance
and obstacles, critical for designing reliable wireless links.
Question 7. Which IEEE 802.11 amendment introduced Orthogonal
Frequency Division Multiplexing (OFDM)?
A) 802.11a
B) 802.11b
C) 802.11g
D) 802.11n
Answer: A
Explanation: 802.11a introduced OFDM modulation, enabling higher data
rates in the 5 GHz band by efficiently utilizing multiple subcarriers.
Question 8. What is the main advantage of MIMO (Multiple Input Multiple
Output) technology?
A) Reduced power consumption
B) Increased spectral efficiency and throughput
C) Simplified hardware design
Professional Exam
Question 1. Which electromagnetic spectrum range is primarily utilized for
Wi-Fi communications?
A) Infrared
B) Microwave
C) Ultraviolet
D) Radiofrequency
Answer: B
Explanation: Wi-Fi operates in the microwave portion of the electromagnetic
spectrum, typically around 2.4 GHz and 5 GHz frequencies, facilitating
wireless data transmission.
Question 2. In RF concepts, what does the term 'wavelength' refer to?
A) The number of oscillations per second
B) The distance between successive crests of a wave
C) The amplitude of a wave
D) The phase difference between signals
Answer: B
Explanation: Wavelength is the physical distance between successive crests
, CWAP-402 Certified Wireless Analysis
Professional Exam
or troughs in a wave, inversely proportional to frequency, critical for antenna
design.
Question 3. Which factor most significantly affects signal propagation
through obstacles like walls?
A) Wavelength
B) Reflection
C) Diffraction
D) Absorption
Answer: D
Explanation: Absorption involves the conversion of RF energy into heat
within materials like walls, which diminishes signal strength as it passes
through obstacles.
Question 4. What is the primary characteristic of an omnidirectional
antenna?
A) Focused beam in one direction
B) Equal radiation in all directions
C) Multiple narrow beams
, CWAP-402 Certified Wireless Analysis
Professional Exam
D) High gain in a small area
Answer: B
Explanation: Omnidirectional antennas radiate RF energy equally in all
horizontal directions, ideal for covering broad areas.
Question 5. Which decibel measurement is used to express antenna gain?
A) dB
B) dBi
C) dBm
D) dBc
Answer: B
Explanation: dBi indicates gain relative to an isotropic radiator, reflecting how
much an antenna concentrates energy in a particular direction.
Question 6. In link budget analysis, what does the term 'path loss' refer to?
A) The total transmitted power
B) The reduction in signal strength as it propagates
C) The antenna gain
D) The noise floor level
, CWAP-402 Certified Wireless Analysis
Professional Exam
Answer: B
Explanation: Path loss quantifies the decrease in signal power over distance
and obstacles, critical for designing reliable wireless links.
Question 7. Which IEEE 802.11 amendment introduced Orthogonal
Frequency Division Multiplexing (OFDM)?
A) 802.11a
B) 802.11b
C) 802.11g
D) 802.11n
Answer: A
Explanation: 802.11a introduced OFDM modulation, enabling higher data
rates in the 5 GHz band by efficiently utilizing multiple subcarriers.
Question 8. What is the main advantage of MIMO (Multiple Input Multiple
Output) technology?
A) Reduced power consumption
B) Increased spectral efficiency and throughput
C) Simplified hardware design
