Answer:
Webcam
Explanation:
A webcam is mainly used for taking images or videos from the computer. the webcam is a combination of two basic words i.e. web and camera. webcam can be connected to any computer via USB. It can be mounted on the desktop and sometimes it comes inbuilt on the laptops.
A webcam is also used for face recognition function to login to a computer system.
so according to the scenario, the most appropriate answer is a webcam.
Dynamic Host Configuration Protocol, also known as DHCP.
c++, because it is considered as the mother of all programming languages. you can easily access other programming languages if you have a command on c++