Define the following IT concepts, and describe their role and importance within a network: IP address and DNS Server and client VPN Firewalls LANs and WANs Choose one of the following scenarios and create a network configuration diagram in Microsoft Visio using either the Basic Network Diagram or Detailed Network Diagram symbol sets: Justin Altuve operates a small photography business out of his home. He connects to the internet through a cable modem connected to a wireless router. For information security, he uses a firewall. On his network, he has a desktop PC, a laptop, an IP phone, and a printer. He uses a digital camera that he regularly syncs with his laptop