COMPUTER NETWORKING

Detailed explanation-1: -The largest hosting providers are Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP), and there are many local and regional providers as well. You will want to consider which provider to use based on a variety of factors such as cost, location, and available services.

Detailed explanation-2: -All services accessible to users on communicating from an external network can and should be placed in the DMZ, if one is used. The most common services are: Web servers: Web servers responsible for maintaining communication with an internal database server may need to be placed into a DMZ.

Detailed explanation-3: -PostgreSQL PostgreSQL is a database server that provides quick database retrieval. PostgreSQL allows users to customize functions through many programming languages, such as Java and C++. This can make PostgreSQL a great option for organizations that need to personalize their database server operations.

Detailed explanation-4: -The best placement is to put the database servers in a trusted zone of their own. They should allow inbound connections from the web servers only, and that should be enforced at a firewall and on the machines. They should only be making outbound connections if you’re updating software on them.