CWNA General Information 3

Question 1

When calculating a link budget, which term describes the total signal loss between the transmitter output and receiver input excluding antenna gain?

Accepted Answer

Free-space path loss

Answer

Free-space path loss (FSPL) represents the attenuation of the signal as it travels through open space between the two antennas.

Question 2

Which 802.11 frame type is used by an access point to periodically announce its presence and capabilities?

Accepted Answer

Beacon

Answer

Beacon frames are management frames sent periodically by APs to advertise the BSS, SSID, supported rates, and other capabilities.

Question 3

What modulation technique does 802.11ax (Wi-Fi 6) introduce that was not present in 802.11ac?

Accepted Answer

1024-QAM

Answer

802.11ax introduced 1024-QAM, encoding 10 bits per symbol compared to 256-QAM's 8 bits, increasing spectral efficiency.

Question 4

In RF terminology, what does 'dBi' measure?

Accepted Answer

Antenna gain relative to an isotropic radiator

Answer

dBi expresses antenna gain as decibels relative to a theoretical isotropic radiator that radiates equally in all directions.

Question 5

Which Wi-Fi Alliance certification program validates interoperability for WPA3 security?

Accepted Answer

Both WPA3-Personal and WPA3-Enterprise

Answer

The Wi-Fi CERTIFIED WPA3 program includes both Personal (SAE) and Enterprise (192-bit security) modes.

CWNA - Wireless Network Administrator Practice Test