Which type of port is found on a DSL modem/router for internet connection?

The correct answer is RJ-11, which is the type of port commonly found on a DSL modem/router for establishing an internet connection. RJ-11 connectors are designed specifically for telephone lines and are used to connect the modem/router to the telephone wall socket. This is critical for DSL technology, which utilizes existing telephone lines to provide internet access. DSL (Digital Subscriber Line) requires this type of connection to transmit both voice and data, effectively utilizing the wiring in residential and commercial buildings.

While USB ports might be found on some modems for connection to computers for data transfer or device management, they are not used for the primary internet connection. HDMI and VGA ports are video ports used to connect displays, such as monitors or televisions, and do not play any role in internet connectivity through a DSL modem.