CWS CWS Wi-Fi Service Sets 2

Question 1

What identifier uniquely distinguishes one BSS from another at Layer 2?

Accepted Answer

BSSID

Answer

The BSSID is a 48-bit MAC address that uniquely identifies a single BSS at Layer 2.

Question 2

In an IBSS (ad-hoc) network, which device generates the BSSID?

Accepted Answer

The first station that starts the IBSS

Answer

In an IBSS, the first station that beacons and establishes the network generates a locally administered BSSID.

Question 3

Which statement correctly describes a Distribution System (DS) in a Wi-Fi ESS?

Accepted Answer

It is the wired or logical backbone interconnecting APs

Answer

The Distribution System (DS) is the wired or logical infrastructure (typically Ethernet) that connects multiple APs to form an ESS.

Question 4

A roaming client moves from AP1 to AP2, both sharing the same SSID. What remains constant during this transition?

Accepted Answer

SSID

Answer

The SSID (network name) stays the same across all APs in an ESS, enabling seamless roaming without reconfiguration.

Question 5

How many BSSes can share the same SSID to form an ESS?

Accepted Answer

No fixed limit—two or more

Answer

An ESS can consist of two or more BSSes (with no fixed upper limit) that share the same SSID and are connected through a DS.

CWS Exam Practice Test