CWNA Technology & Digital Applications 3

Question 1

Which 802.11 power management mode allows a client to sleep for multiple beacon intervals rather than waking every DTIM?

Accepted Answer

WMM Power Save (U-APSD)

Answer

Active Mode

Answer

Legacy Power Save (PS-Poll)

Answer

Target Wake Time (TWT)

Question 2

An enterprise network uses 802.11r to speed up roaming for VoIP handsets. What does 802.11r specifically optimize?

Accepted Answer

The 4-way handshake and key exchange during reassociation

Answer

Channel scanning speed during roaming

Answer

Transmit power adjustment after roaming

Answer

Band steering from 2.4 GHz to 5 GHz

Question 3

In the context of CWNA, what is the primary role of the Distribution System (DS) in a wireless infrastructure network?

Accepted Answer

Connecting APs to each other and to the wired LAN backbone

Answer

Distributing RF signals across antennas via cables

Answer

Distributing IP addresses to wireless clients via DHCP

Answer

Managing transmit power distribution across a WLAN controller

Question 4

Which statement best describes how 802.11k (Radio Resource Management) benefits wireless clients?

Accepted Answer

It provides clients with neighbor AP reports to reduce active scanning time

Answer

It encrypts neighbor reports to prevent eavesdropping during scanning

Answer

It automatically adjusts AP transmit power based on client RSSI

Answer

It enforces band steering by blocking 2.4 GHz associations

Question 5

What is the maximum number of spatial streams supported by 802.11ac Wave 2 for downlink MU-MIMO?

Accepted Answer

8 streams total across clients

Answer

2 streams total

Answer

4 streams per client, 4 clients simultaneously

Answer

4 simultaneous downlink users with up to 4 streams each

Question 6

A CWNA candidate reviews a site survey showing -85 dBm RSSI at a client location. Which characterization is most accurate?

Accepted Answer

Marginal signal that may struggle with basic connectivity

Answer

Excellent signal suitable for all applications

Answer

Good signal adequate for video streaming

Answer

The minimum required for 802.11ax 1024-QAM operation

Question 7

Which 802.11 frame type is used by an AP to periodically announce its presence, including SSID and supported rates?

Accepted Answer

Beacon frame

Answer

Probe Response frame

Answer

Association Request frame

Answer

Authentication frame