CWS Case Analysis & Practical Application 2

Question 1

A coffee shop deploys a single 2.4 GHz AP and customers report slow speeds during peak hours. What is the most likely root cause?

Accepted Answer

Co-channel interference from neighboring APs on the same channel

Answer

Co-channel interference occurs when multiple APs share the same channel in overlapping coverage areas, causing collisions and reduced throughput.

Question 2

A hospital needs wireless coverage with zero tolerance for packet loss in life-critical monitoring equipment. Which deployment approach is most appropriate?

Accepted Answer

Overlapping coverage with fast BSS transition (802.11r) enabled

Answer

802.11r Fast BSS Transition minimizes roaming latency and packet loss, which is critical for real-time medical monitoring devices.

Question 3

During a site survey, you measure a -75 dBm signal at the far edge of a conference room. Users report frequent disconnections. What should you do?

Accepted Answer

Add an AP to improve coverage and raise the signal floor

Answer

Adding an AP to reduce cell size raises the signal level at the coverage edge, improving reliability and reducing disconnections.

Question 4

A warehouse deploys 802.11ac APs but forklifts with metal frames cause intermittent connectivity. What RF phenomenon is most responsible?

Accepted Answer

Multipath interference caused by metal reflections

Answer

Metal surfaces reflect RF signals, creating multiple signal paths that arrive at the receiver at different times, causing multipath interference.

Question 5

A school wants to filter student internet access without purchasing additional hardware. Which feature on a business-grade AP achieves this?

Accepted Answer

Integrated URL/content filtering or DNS-based filtering on the controller

Answer

Many enterprise AP controllers include built-in content filtering or integrate with DNS filtering services to control internet access by client group.

(CWS) Certified Wireless Specialist Practice Test

(CWS) Certified Wireless Specialist Practice Test

CWS Case Analysis & Practical Application 2