CWT CWT Wireless Client Management & QoS

Question 1

What is the 802.11 association process, and what is the correct sequence of steps for a client to join a BSS?

Accepted Answer

Scanning → Authentication → Association

Answer

Authentication → Association → DHCP

Answer

DHCP → Authentication → Association

Answer

Association → Authentication → Scanning

Question 2

What is 802.11r (Fast BSS Transition) and how does it benefit wireless clients?

Accepted Answer

A roaming protocol that pre-authenticates clients with neighboring APs to reduce handoff latency

Answer

A standard for higher data rates on 5 GHz

Answer

A power-saving protocol that turns off radios between beacons

Answer

A security standard requiring WPA3 encryption

Question 3

What is the purpose of WMM (Wi-Fi Multimedia) in a wireless network?

Accepted Answer

To provide Quality of Service by prioritizing traffic into four access categories (voice, video, best effort, background)

Answer

To increase the physical data rate of 802.11ac networks

Answer

To encrypt multimedia streams using AES

Answer

To allow APs to stream video directly to clients

Question 4

What is the difference between active and passive scanning by a wireless client?

Accepted Answer

Active scanning transmits probe requests on each channel; passive scanning listens for beacon frames

Answer

Passive scanning is faster than active scanning

Answer

Active scanning only works on 5 GHz; passive only works on 2.4 GHz

Answer

There is no functional difference in the scan results

Question 5

What is BSS coloring in 802.11ax (Wi-Fi 6) and how does it improve network efficiency?

Accepted Answer

A mechanism that tags frames with a BSS identifier so devices can distinguish overlapping networks and reduce unnecessary deferrals

Answer

A visual scheme for color-coding SSIDs in management dashboards

Answer

A channel bonding technique unique to 6 GHz

Answer

An encryption color code used for WPA3 key exchange

Question 6

What does the term 'sticky client' describe in a Wi-Fi network, and what is the impact on performance?

Accepted Answer

A client that remains associated to a distant or weak AP instead of roaming to a stronger one nearby

Answer

A client that caches too much local data

Answer

A client configured with a static IP address

Answer

A device that broadcasts excessive ARP requests