Which Azure networking component is the core unit, from which administrators can have full control over IP address assignments, name resolution, security settings and routing rules

The correct answer will be "Virtual networks".

Explanation:

This networking seems to be the major element of azure connectivity that further keep track of almost all of the essential administrative responsibilities. Its function involves complete ownership over all the appointments of Ip addresses as well as the settlement of names.This decides based on the criteria for transferring the information from one place to another other.