Which protocol allows for remote access to another computer?

The correct choice is RDP (Remote Desktop Protocol) because it is specifically designed to provide remote access to another computer, allowing users to connect to and control a remote system as if they were sitting in front of it. This protocol is widely used in various settings, including corporate environments, where employees need to access their work computers from off-site locations. RDP enables graphical access, meaning that users can see the desktop of the remote computer and interact with it using their own keyboard and mouse.

In contrast, the other protocols listed serve different purposes. HTTP is used for transferring hypertext files on the web, enabling web browsers to fetch web pages. FTP is mainly focused on transferring files between computers on a network, but it does not provide remote access to the desktop or the user interface of another computer. DNS is responsible for translating domain names into IP addresses, facilitating the navigation on the internet but does not offer any form of remote control or access to other computers.