The company where Derek works has tasked him with setting up and securing a SOHO router. He wants to make sure the wireless network is secure and that no unauthorized person can gain access to the network.

Derek must first of all change the default user name and password.

Explanation:

The first action derek must take is to change the default user name and password to the router, because they can be found easily on the Internet, and if an unauthorized person were to gain access to the company's network, he would be able to change the settings. This is because user name and password are key security measures for router set up.