Answer:
(2) real-vncserver (VNC server) Start: vncserver Stop: vncserver -kill :
(4) Apache webserver
Step-by-step explanation:
The FTP is a file transfer protocol. And hence 1 is for file transfer and not for starting or stopping the server. Also, the ssh is for secure file transfer, and hence ssh server is also not an option here. However, apache web server, as we all know that apache is a web server, and the VNC SERVER or the virtual network computing desktop are for server start and stop. Hence, the above-mentioned options are the correct options.