CWNA WLAN Architecture Quiz

1. Which modulation technique provides the highest data rate in 802.11ac?

256-QAM

1024-QAM

2048-QAM

4096-QAM

2. Which deployment model combines centralized management with distributed data forwarding?

Cloud-based WLAN architecture

Split-MAC architecture

Standalone access point model

Mesh-only topology

3. In RF site surveys, what does a heat map typically display?

RSSI or data rate coverage across a physical area

Temperature variations in the building

Power consumption of each access point

User activity patterns over time

4. What is the primary role of Quality of Service (QoS) in WLAN design?

Prioritize traffic and manage bandwidth allocation

Increase antenna gain and coverage

Reduce electromagnetic interference

Simplify network configuration

5. In WLAN architecture, what does roaming refer to?

Client device moving between APs while maintaining connectivity

Scanning for available wireless networks

Increasing transmit power for better coverage

Switching between wired and wireless connections

6. Which factor has the most significant impact on WLAN coverage in a multi-story building?

Vertical attenuation through floors and ceilings

The color of the walls

The time of day

The number of connected users

7. What is the primary purpose of a captive portal in WLAN architecture?

Redirect unauthenticated users to a login page

Block all wireless access to the network

Encrypt all user traffic automatically

Monitor bandwidth usage per client

8. In a dual-band WLAN architecture, which band is typically preferred for mobile devices?

2.4 GHz for better range and compatibility

5 GHz exclusively for security

Only the band with least interference

The band with highest transmit power

9. What does the Friis equation calculate in RF design?

Path loss between transmitter and receiver

Maximum transmit power allowed

Antenna gain in all directions

Signal-to-noise ratio threshold

10. In WLAN architecture, what is the primary benefit of channel bonding?

Increases data rate by combining multiple channels

Reduces power consumption of access points

Improves security through encryption

Extends coverage area significantly

11. Which IEEE 802.11 standard operates in the 5 GHz frequency band and provides higher data rates than 802.11b?

802.11a

802.11b

802.11g

802.11n

12. What is the primary disadvantage of a mesh WLAN architecture?

Increased latency due to multi-hop relay

Inability to cover outdoor areas

Requires wired backhaul to all APs

Limited to 2.4 GHz operation only

13. In WLAN security architecture, what is the purpose of WPA2?

Encrypt wireless traffic and authenticate users

Increase wireless signal strength

Reduce interference from neighboring networks

Manage access point power consumption

14. What does the term 'site survey' refer to in WLAN architecture?

Physical assessment of coverage, interference, and capacity needs

Annual security audit of wireless networks

User satisfaction survey about network speed

Inventory count of all network devices

15. Which of the following best describes RF propagation in an indoor WLAN environment?

Signals travel in straight lines only

Signals reflect, refract, and diffract around obstacles

Signals are unaffected by walls or furniture

Signals always weaken uniformly in all directions

16. In a distributed WLAN architecture, what is the primary role of the access point?

Manage all wireless security policies

Relay RF signals and handle frame forwarding

Authenticate all client devices

Monitor network bandwidth usage

17. What is the maximum number of non-overlapping channels available in the 2.4 GHz band?

3

5

8

11

18. Which channel spacing is used in the 5 GHz band for non-overlapping channels in most regions?

20 MHz

40 MHz

80 MHz

160 MHz

19. In WLAN design, what does RSSI measure?

Received Signal Strength Indicator

Radio Signal Speed Index

Roaming Security Standard Interface

Rate Selection Signal Integrity

20. What is the primary function of a wireless controller in a centralized WLAN architecture?

Manage AP firmware updates and RF parameters

Amplify RF signals to extend coverage

Convert wired traffic to wireless frames

Filter all incoming wireless traffic