A Technician Is Configuring a New SOHO Multifunction Wireless Router

Multiple Choice

A technician is configuring a new SOHO multifunction wireless router at a customer's location to provide network access to several wireless devices. The technician is required to protect the customer's private network from unauthorized access while performing the initial router setup as well as during normal operation after the configuration is completed.
Which of the following is the best step for the technician to take in securing the router to meet this requirement?

A) Enable DHCP on the router and configure IP address reservations for the wireless clients.
B) Change the router's default administrative password.
C) Disable the router's radio in the wireless network settings.
D) Configure MAC filtering on the router and allow access to only the technician's computer.