CWSP-205 Certified Wireless Security
Professional Exam
Question 1. Which modulation technique is primarily used in 802.11a for
high data rate transmission?
A) DSSS
B) OFDM
C) FHSS
D) DSSS with Complementary Code Keying (CCK)
Answer: B
Explanation: 802.11a utilizes Orthogonal Frequency Division Multiplexing
(OFDM) modulation to achieve high data rates up to 54 Mbps, making it
suitable for high-throughput wireless communication.
Question 2. In 802.11 MAC layer, what does the Distributed Coordination
Function (DCF) primarily use to avoid collisions?
A) Token passing
B) CSMA/CA with RTS/CTS
C) Polling
D) Synchronous polling
Answer: B
Explanation: DCF employs Carrier Sense Multiple Access with Collision
, CWSP-205 Certified Wireless Security
Professional Exam
Avoidance (CSMA/CA) and optional RTS/CTS handshake to minimize
collisions in wireless networks.
Question 3. Which QoS mechanism in 802.11 is responsible for prioritizing
multimedia traffic?
A) WEP
B) WPA
C) WMM
D) 802.1X
Answer: C
Explanation: Wi-Fi Multimedia (WMM) provides QoS by prioritizing traffic
such as voice and video, ensuring better performance for multimedia
applications.
Question 4. What is the primary purpose of Target Wake Time (TWT) in
802.11ax?
A) Increase data throughput
B) Reduce power consumption
C) Enhance security
, CWSP-205 Certified Wireless Security
Professional Exam
D) Improve channel bonding
Answer: B
Explanation: TWT allows devices to schedule wake-up times, reducing power
consumption by minimizing active periods, especially important for battery-
powered devices.
Question 5. Which frame aggregation technique combines multiple A-MSDUs
into a single transmission unit?
A) A-MPDU
B) A-MSDU
C) RTS/CTS
D) Beacon aggregation
Answer: B
Explanation: A-MSDU aggregates multiple MAC Service Data Units (MSDUs)
into one MPDU, reducing overhead but increasing error susceptibility.
Question 6. During which phase does the 802.11 amendment process
typically introduce new features?
A) Standardization
, CWSP-205 Certified Wireless Security
Professional Exam
B) Draft development
C) Ratification
D) All of the above
Answer: D
Explanation: The amendment process involves drafting, discussion, testing,
and ratification phases, during which new features are proposed, refined,
and standardized.
Question 7. Which multi-user technology allows simultaneous data
transmission to multiple clients in 802.11ax?
A) MU-MIMO
B) OFDMA
C) Both A and B
D) CSMA/CA
Answer: C
Explanation: 802.11ax introduces MU-MIMO and OFDMA, enabling
simultaneous multi-user data streams for higher efficiency and capacity.
Professional Exam
Question 1. Which modulation technique is primarily used in 802.11a for
high data rate transmission?
A) DSSS
B) OFDM
C) FHSS
D) DSSS with Complementary Code Keying (CCK)
Answer: B
Explanation: 802.11a utilizes Orthogonal Frequency Division Multiplexing
(OFDM) modulation to achieve high data rates up to 54 Mbps, making it
suitable for high-throughput wireless communication.
Question 2. In 802.11 MAC layer, what does the Distributed Coordination
Function (DCF) primarily use to avoid collisions?
A) Token passing
B) CSMA/CA with RTS/CTS
C) Polling
D) Synchronous polling
Answer: B
Explanation: DCF employs Carrier Sense Multiple Access with Collision
, CWSP-205 Certified Wireless Security
Professional Exam
Avoidance (CSMA/CA) and optional RTS/CTS handshake to minimize
collisions in wireless networks.
Question 3. Which QoS mechanism in 802.11 is responsible for prioritizing
multimedia traffic?
A) WEP
B) WPA
C) WMM
D) 802.1X
Answer: C
Explanation: Wi-Fi Multimedia (WMM) provides QoS by prioritizing traffic
such as voice and video, ensuring better performance for multimedia
applications.
Question 4. What is the primary purpose of Target Wake Time (TWT) in
802.11ax?
A) Increase data throughput
B) Reduce power consumption
C) Enhance security
, CWSP-205 Certified Wireless Security
Professional Exam
D) Improve channel bonding
Answer: B
Explanation: TWT allows devices to schedule wake-up times, reducing power
consumption by minimizing active periods, especially important for battery-
powered devices.
Question 5. Which frame aggregation technique combines multiple A-MSDUs
into a single transmission unit?
A) A-MPDU
B) A-MSDU
C) RTS/CTS
D) Beacon aggregation
Answer: B
Explanation: A-MSDU aggregates multiple MAC Service Data Units (MSDUs)
into one MPDU, reducing overhead but increasing error susceptibility.
Question 6. During which phase does the 802.11 amendment process
typically introduce new features?
A) Standardization
, CWSP-205 Certified Wireless Security
Professional Exam
B) Draft development
C) Ratification
D) All of the above
Answer: D
Explanation: The amendment process involves drafting, discussion, testing,
and ratification phases, during which new features are proposed, refined,
and standardized.
Question 7. Which multi-user technology allows simultaneous data
transmission to multiple clients in 802.11ax?
A) MU-MIMO
B) OFDMA
C) Both A and B
D) CSMA/CA
Answer: C
Explanation: 802.11ax introduces MU-MIMO and OFDMA, enabling
simultaneous multi-user data streams for higher efficiency and capacity.
