Exam 220-1101 topic 1 question 108 discussion

To connect a computer that lacks a 9-pin serial port to a point-of-sale system using a 9-pin serial adapter, you would typically use a USB-to-Serial adapter. So, the correct answer is: C. USB You would plug the USB-to-Serial adapter into an available USB port on the computer, and it would provide a 9-pin serial port for connecting to the point-of-sale system.

Picked USB: You can use a usb-to-serial adapter to connect a point-of-sale system with a 9-pin serial adapter if the computer doesn't have the serial port. A. HDMI: Not used for serial communication. B. Bluetooth: I believe bluetooth can establish a virtual serial connection wirelessly but that doesn't really work here for a pos system that needs a traditional direct serial connection with the 9-pin serial port. D. Lightning: There is a lighting-to-serial cable but the question said that the technician is replace a computer, not an iOS device. A lightning to serial adapter wouldn't make sense here.

Someone should please give explanation on this question.

C- A 9-pin serial to USB adapter can be used to connect the point-of-sale system to a USB port on the new computer.

It's C - USB

Dont mind be, im also waiting for an answer