CWS CWS Wireless Client Devices 2

Question 1

Which Wi-Fi client power-saving mechanism allows an access point to buffer frames for a sleeping client and deliver them upon request?

Accepted Answer

Legacy Power Save (PS-Poll)

Answer

Active Mode (AM)

Answer

WMM-Power Save (U-APSD)

Answer

Target Wake Time (TWT)

Question 2

A wireless client associates but cannot obtain an IP address. The most likely Layer 2 issue to investigate first is:

Accepted Answer

4-Way Handshake failure

Answer

Incorrect SSID passphrase

Answer

DHCP server misconfiguration

Answer

Incorrect DNS suffix

Question 3

What is the primary purpose of the 802.11 Probe Request frame sent by a wireless client?

Accepted Answer

To actively discover available BSSs

Answer

To authenticate with an AP

Answer

To request an IP address

Answer

To negotiate QoS parameters

Question 4

Which client device setting controls how aggressively the client roams away from an AP with a degrading signal?

Accepted Answer

Roaming aggressiveness / sensitivity

Answer

Transmit power level

Answer

Channel bandwidth

Answer

Short guard interval toggle

Question 5

A dual-band 802.11ac client is connected to a 2.4 GHz radio. What feature could the AP use to encourage the client to use the 5 GHz band?

Accepted Answer

Band steering

Answer

MU-MIMO

Answer

OFDMA

Answer

Beamforming

Question 6

Which frame type does a wireless client transmit to gracefully disconnect from an AP?

Accepted Answer

Disassociation frame

Answer

Deauthentication frame

Answer

Null data frame with power management bit set

Answer

RTS frame

Question 7

What does the term 'sticky client' describe in a Wi-Fi environment?

Accepted Answer

A client that remains associated to a far or weak AP instead of roaming to a closer one

Answer

A client that frequently changes SSIDs

Answer

A client using MFP (Management Frame Protection)

Answer

A client that only supports 2.4 GHz