Server Topics:- 1)what are server model you know ? 2)how get a remote access for a server? 3)what you client raised a ticket about my server not working! when i try to connect using ssh/remote desktop? Networking Topics:- 1)What Nat Protocol do? 2)what are the process will happen in background when you configured 3)DHCP on router ! me in my mobile i tried to connect on the router? 4)protocol port numbers for(DNS,SSH,SMTP,IMAP,POP)