Which Cisco solution features recursive DNS capabilities?

Question

Options

• ACisco Defense Orchstrator
• BIdentity Services Engine
• CUmbrella
• DCognitive Threat Analytics

• A
  2% (1)
• B
  4% (2)
• C
  94% (50)

Explanation

Cisco Umbrella is built on the foundation of recursive DNS - it intercepts DNS queries and resolves them through its global cloud infrastructure, allowing it to block malicious domains before a connection is ever established. This recursive DNS engine is Umbrella's core mechanism for enforcement, making it the only choice here.

Why the others are wrong:

• A. Cisco Defense Orchestrator (CDO) is a cloud-based management console for administering Cisco security devices (firewalls, ASA, FTD) - it manages policy, not DNS resolution.
• B. Identity Services Engine (ISE) handles network access control (NAC), authentication, and authorization (e.g., 802.1X, RADIUS) - DNS is not its function.
• D. Cognitive Threat Analytics (CTA) uses machine learning to analyze web traffic logs for threat detection - it observes traffic patterns, it doesn't resolve DNS queries.

Memory tip: Think "Umbrella covers you from above" - DNS is the first step in any internet connection, so Umbrella intercepts threats overhead at the DNS layer before anything else happens. If you see "DNS" + "Cisco security," the answer is almost always Umbrella.

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