Final answer:
The remote access software used for controlling a computer, file transfers, and screen sharing is b. Virtual Network Computing (VNC).
Step-by-step explanation:
The type of remote access client/server software that is used to remotely control a computer, transfer files, and share screens is Virtual Network Computing (VNC). This technology allows a user to interact with a remote computer as if they were sitting in front of it, providing full control over the desktop interface. VNC is platform-independent and utilizes the Remote Framebuffer (RFB) protocol to transmit keyboard, mouse, and display information between the client and the server.
Other options like remote desktop typically refer to Microsoft's RDP (Remote Desktop Protocol) used for similar purposes. Microsoft Remote Assistance is specifically designed for help-desk scenarios, and Secure Shell (SSH) is primarily for secure command-line access and file transfers, not for graphical screen sharing.It utilizes the RFB protocol and provides a graphical interface for remote interactions, unlike SSH, which is command-line based.