Mongod is the primary daemon process for the MongoDB system which is used for handles data requests, manages data access, and performs background management operations. We can specifies a configuration file for runtime configuration options configuration file is the preferred method for runtime configuration of Mongod. The options are equivalent to the command-line configuration options. Specifies the IP address that Mongod binds to in order to listen for connections from applications and You may attach Mongod to any interface.