Exam FC0-U61 topic 1 question 150 discussion

the best option to improve security is to isolate guest users from the main network by creating a guest network

Changing the default password is an essential security measure for any network, including a WPA2 enterprise wireless network. This helps to prevent unauthorized access in case the default password is known or easily guessable. Changing the SSID and creating a guest network are also good security practices, but they do not directly address the specific issue of repeated attacks. Switching to WEP security is not recommended, as it is less secure than WPA2. It is considered outdated and vulnerable to various attacks.

Any device with a default password is just asking for trouble. Change the default password ASAP. Creating a Guest network wont help or hinder much either way

Creating a guest network segregates the corporate network and does not allow for guest devices to see the corporate resources.