ACA Wireless Technologies 2

Question 1

Which IEEE 802.11 amendment introduced OFDMA as a key feature to improve multi-user efficiency?

Accepted Answer

802.11ax

Answer

802.11ac

Answer

802.11n

Answer

802.11g

Question 2

What is the primary purpose of a BSSID in a wireless network?

Accepted Answer

Uniquely identifies an access point's radio interface using its MAC address

Answer

Identifies the wireless channel in use

Answer

Assigns IP addresses to wireless clients

Answer

Specifies the encryption algorithm used

Question 3

In Aruba's architecture, which component is responsible for centralized WLAN control when using controller-based deployment?

Accepted Answer

Aruba Mobility Controller

Answer

Aruba ClearPass

Answer

Aruba AirWave

Answer

Aruba Central

Question 4

Which wireless frequency band is most susceptible to interference from microwave ovens and Bluetooth devices?

Accepted Answer

2.4 GHz

Answer

900 MHz

Answer

5 GHz

Answer

6 GHz

Question 5

What does the term 'roaming' refer to in a wireless LAN environment?

Accepted Answer

A client moving between APs while maintaining network connectivity

Answer

Scanning for available SSIDs

Answer

Switching between 2.4 GHz and 5 GHz bands

Answer

Connecting to a guest SSID automatically

Question 6

Which authentication framework is most commonly used for enterprise wireless networks to authenticate users against a RADIUS server?

Accepted Answer

802.1X/EAP

Answer

WEP

Answer

WPA2-Personal

Answer

MAC Authentication Bypass

Question 7

In Wi-Fi 6 (802.11ax), what is the maximum number of spatial streams supported?

Accepted Answer

8

Answer

4

Answer

6

Answer

12