CWS CWS Wireless Client Devices 3

Question 1

In 802.11 networks, which mechanism do clients use to avoid collisions before transmitting data?

Accepted Answer

CSMA/CA with random backoff

Answer

CSMA/CA with random backoff (EDCA/DCF) causes clients to wait a random period after detecting a clear channel before transmitting.

Question 2

Which 802.11 security protocol uses SAE (Simultaneous Authentication of Equals) to replace the PSK handshake?

Accepted Answer

WPA3-Personal

Answer

WPA3-Personal replaces PSK with SAE, providing forward secrecy and resistance to offline dictionary attacks.

Question 3

A client reports slow Wi-Fi despite strong signal. A spectrum analyzer shows high non-Wi-Fi interference at 2.4 GHz. What is the best client-side workaround?

Accepted Answer

Switch the client to the 5 GHz band

Answer

Moving the client to 5 GHz avoids the congested 2.4 GHz band where microwave ovens and Bluetooth create interference.

Question 4

What is the maximum number of spatial streams supported by an 802.11ac Wave 2 (Wi-Fi 5) client device?

Accepted Answer

4

Answer

802.11ac Wave 2 supports up to 4 spatial streams for SU-MIMO, while MU-MIMO supports up to 4 simultaneous clients.

Question 5

Which EAP method uses a TLS tunnel to protect inner authentication and only requires a server-side certificate?

Accepted Answer

PEAP

Answer

PEAP creates an encrypted TLS tunnel using only a server certificate, then authenticates the client via an inner method like MS-CHAPv2.

CWS Exam Practice Test

CWS Exam Practice Test

CWS CWS Wireless Client Devices 3