CWS CWS Wi-Fi Service Sets 3

Question 1

A single AP supports multiple SSIDs simultaneously. What is each additional SSID typically mapped to?

Accepted Answer

A separate VLAN on the wired network

Answer

Each SSID on a multi-SSID AP is typically mapped to a unique VLAN on the wired (DS) side to logically separate traffic.

Question 2

What happens to beacon frames when an administrator enables 'hidden SSID' (SSID suppression)?

Accepted Answer

Beacons are sent but the SSID field contains a null or empty value

Answer

With hidden SSID enabled, the AP still sends beacons but the SSID element is set to zero-length (null), hiding the network name.

Question 3

In a mesh Wi-Fi deployment, what type of service set is formed between the mesh nodes themselves?

Accepted Answer

MBSS

Answer

An MBSS (Mesh Basic Service Set) is the IEEE 802.11s service set formed among mesh nodes (MPs) for multi-hop wireless backhaul.

Question 4

Which frame type does a client use to actively discover SSIDs by broadcasting a request?

Accepted Answer

Probe request

Answer

A probe request is sent by a client to actively scan for available SSIDs; APs respond with probe responses.

Question 5

An ESS is defined by multiple BSSes connected through which element?

Accepted Answer

The Distribution System (DS)

Answer

The Distribution System (DS) interconnects the BSSes, and the shared SSID ties them together into an ESS.

CWS Exam Practice Test