What should you recommend to prevent users outside the Litware on-premises network from accessing the analytical data store?
A . a server-level virtual network rule
B . a database-level virtual network rule
C . a database-level firewall IP rule
D . a server-level firewall IP rule
Virtual network rules are one firewall security feature that controls whether the database server for your single databases and elastic pool in Azure SQL Database or for your databases in SQL Data Warehouse accepts communications that are sent from particular subnets in virtual networks.
Server-level, not database-level: Each virtual network rule applies to your whole Azure SQL Database server, not just to one particular database on the server. In other words, virtual network rule applies at the server level, not at the database-level.