CWNA Case Studies & Practical Application 3

Question 1

An outdoor stadium deploys Wi-Fi for fan engagement. Coverage maps show good RSSI but users report slow speeds during games. What is the MOST likely cause?

Accepted Answer

Airtime is being consumed by high client density causing contention

Answer

In high-density environments, even strong RSSI does not prevent airtime contention when thousands of clients compete for channel access simultaneously.

Question 2

A logistics company installs WLAN in a metal-shelved warehouse. After installation, large dead zones are found in aisles. The site survey was done without shelves installed. What is the ROOT CAUSE?

Accepted Answer

Metal shelving causes multipath and signal absorption not captured in the pre-deployment survey

Answer

Metal shelving significantly attenuates and reflects RF signals; a survey performed before fixtures are in place fails to capture the real post-deployment RF environment.

Question 3

A coffee shop owner wants to provide guest Wi-Fi while protecting the POS system on the same AP. Which configuration BEST achieves this?

Accepted Answer

Configure separate SSIDs mapped to separate VLANs with firewall rules between them

Answer

VLAN segmentation with firewall policies between VLANs isolates guest traffic from the POS network while allowing both to share the same physical AP infrastructure.

Question 4

During a WLAN audit, you discover clients are associating to an SSID that matches your corporate network but originates from an unknown device. What type of attack is this?

Accepted Answer

Evil twin (honeypot) AP attack

Answer

An evil twin attack involves a rogue AP broadcasting a legitimate-looking SSID to lure clients into associating with it, enabling credential theft or traffic interception.

Question 5

A hotel deploys Wi-Fi with per-room coverage using APs in hallways. Guests in corner rooms report weak signal. Which antenna type would BEST improve coverage into corner rooms?

Accepted Answer

Patch antennas aimed toward corner rooms from hallway APs

Answer

Patch antennas provide directional gain and can be aimed precisely at corner rooms where omnidirectional coverage from hallway APs is weakest.

CWNA - Wireless Network Administrator Practice Test

CWNA - Wireless Network Administrator Practice Test

CWNA Case Studies & Practical Application 3