Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

A technician is cabling a new small-business router to the ISP's broadband gateway. Into which router port must the Ethernet cable from the gateway be connected to establish the Internet connection?

During setup, a technician cannot reach the router's web dashboard and does not know its IP address. According to the guidance, what commonly used default address should be entered into the browser to attempt to access the router?