Answer:
personal digital assistants (PDAs)palmtop
Most computer devices are connected to the computer through port
Keyboard through usb port
Printer through usb port
Hand point device through usb port
Also computer equipped with LPT port for printers and COM port for additional devices like external modems e.t.c
Answer:C)User interface
Explanation: User interface(UI) is the interaction phase of the user or programmer with the computer system and network. This phase helps the user to connect with the operating system function and let them process it according to the requirement. Example-monitor , keyboard, mouse etc.
Other options that are given are incorrect because operating system is the system that is part of the interface , information is the data and storage is for the storing of data,.Thus the correct option is option(C)