Cisco Enterprise Network Core Technologies (ENCOR) 2025 – 400 Free Practice Questions to Pass the Exam

Cisco Umbrella Services is fundamentally a cloud-based DNS solution that provides a robust security layer for internet traffic. It acts as a first line of defense by intercepting DNS queries from users and evaluating them against an extensive database of known threats. When a user attempts to access a potentially malicious site, Umbrella can block it before the connection is made, thus protecting the network from various cyber threats such as malware and phishing attacks.

This service enhances security beyond traditional firewall solutions by enabling protection at the DNS level, where many threats can be detected and mitigated early in the connection process. Additionally, being cloud-based allows for scalability and flexibility, making it suitable for organizations of various sizes without the need for physical infrastructure.

In contrast, other options do not accurately represent the main functionality of Cisco Umbrella. A cloud-based firewall solution would imply a different primary function, one that focuses on filtering traffic based on predefined security policies rather than DNS layer protection. A local DNS resolver suggests an on-premises solution that doesn't incorporate the threat intelligence and preventive features that Umbrella provides. Lastly, a hardware-based security appliance indicates a reliance on physical devices, which is not how Umbrella operates, as it relies on cloud technology to deliver its services.