200-301 Question 131
Single answerA network administrator is tasked with setting up multiple wireless networks for different departments in an organization. They configure separate SSIDs for each department (e.g., HR, IT, and Sales). During the configuration process, one SSID is set as 'hidden.' What is the key implication of hiding an SSID, and how does it affect network operation?
- A
Hidden SSIDs prevent unauthorized devices from connecting to the network.
- B
Hidden SSIDs make the network invisible in broadcast scans, but clients need the exact SSID to connect.
- C
Hidden SSIDs encrypt the network traffic to increase security.
- D
Hidden SSIDs reduce the likelihood of interference from neighboring wireless networks.
Show answer and explanation
Correct answer: B
Explanation
Hiding an SSID simply prevents the network name from being broadcast in standard wireless scans, making it less visible to casual users. However, clients must manually configure the SSID to connect to the network. This does not improve security significantly, as determined attackers can still discover hidden SSIDs using specialized tools.
- A. Incorrect.
Hidden SSIDs do not prevent unauthorized access by themselves. Security features like WPA2 are required for access control.
- B. Correct.
This is correct. A hidden SSID prevents the network name from appearing in scans, but devices must manually input the SSID to connect.
- C. Incorrect.
Hiding the SSID does not encrypt network traffic. Encryption is handled by protocols like WPA2 or WPA3.
- D. Incorrect.
Hidden SSIDs do not directly reduce interference. Interference is managed by configuring channels or frequencies, not by hiding the SSID.