CWS CWS Wireless Client Devices 4

Question 1

Which 802.11ax (Wi-Fi 6) feature allows an AP to schedule specific wake times for client devices, significantly improving battery life for IoT clients?

Accepted Answer

Target Wake Time (TWT)

Answer

TWT allows devices to negotiate scheduled sleep and wake intervals with the AP, dramatically reducing power consumption.

Question 2

A wireless client NIC supports 2×2:2 MIMO. What does the last number '2' indicate?

Accepted Answer

Number of spatial streams

Answer

In the TxR:S notation, S (the last number) represents the number of supported spatial streams.

Question 3

Which client capability allows it to receive data from multiple APs simultaneously in an 802.11 network (multi-link operation)?

Accepted Answer

802.11be Multi-Link Operation (MLO)

Answer

MLO, introduced in 802.11be (Wi-Fi 7), allows a client to simultaneously transmit and receive across multiple frequency bands or channels.

Question 4

When a client performs an 802.11r Fast BSS Transition, what is the primary benefit compared to a standard reassociation?

Accepted Answer

Reduced roaming latency by pre-establishing keys at the target AP

Answer

802.11r pre-authenticates and pre-derives keys at the target AP, reducing roam time from hundreds of milliseconds to tens.

Question 5

A client device supports WPA3-Enterprise 192-bit mode. Which cipher suite does this mandate?

Accepted Answer

GCMP-256 with SHA-384

Answer

WPA3-Enterprise 192-bit security mode requires GCMP-256 encryption and SHA-384 for HMAC, aligned with CNSA suite requirements.

CWS Exam Practice Test

CWS Exam Practice Test

CWS CWS Wireless Client Devices 4