CWS CWS WLAN Troubleshooting

Question 1

What tool is primarily used to identify non-802.11 RF interference sources in a WLAN environment?

Accepted Answer

Spectrum analyzer

Answer

Packet sniffer

Answer

WLAN scanner app

Answer

Protocol analyzer

Question 2

A wireless client shows 'Limited Connectivity' despite successfully associating with the AP. What is the most likely cause?

Accepted Answer

DHCP failure or IP address conflict

Answer

Incorrect WPA2 passphrase

Answer

Weak RF signal below -80 dBm

Answer

Mismatched SSID name

Question 3

A high retry rate on a wireless AP most commonly indicates which condition?

Accepted Answer

Poor RF signal quality or channel interference

Answer

Too many SSIDs configured on the AP

Answer

Excessive VLAN tagging overhead

Answer

Firmware version incompatibility

Question 4

Which Windows command displays the wireless adapter's current IP address and connection details?

Accepted Answer

ipconfig /all

Answer

netstat -an

Answer

tracert /d

Answer

ping -t 127.0.0.1

Question 5

A single wireless client cannot connect to the WLAN while all other clients work fine. What should be checked first?

Accepted Answer

Client's wireless adapter drivers and settings

Answer

AP channel settings

Answer

DHCP pool exhaustion

Answer

Core switch uplink capacity

Question 6

What does SNR (Signal-to-Noise Ratio) measure in a wireless network?

Accepted Answer

The difference in dB between received signal strength and the noise floor

Answer

The ratio of broadcast to unicast frames on the medium

Answer

The percentage of frames that require retransmission

Answer

The number of associated clients per AP

Question 7

During WLAN troubleshooting, a protocol analyzer captures an unusually high number of deauthentication frames. What could this indicate?

Accepted Answer

A potential DoS attack or rogue AP forcing client disconnections

Answer

Normal AP beacon broadcast activity

Answer

Successful 802.11r fast roaming events

Answer

AP firmware update being applied