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500-651 · Question #96

Which feature in the DNS security module provide on and off network DNS protection?

The correct answer is A. Umbrella. Umbrella (A) is Cisco's cloud-delivered DNS security solution that intercepts DNS queries and blocks malicious domains before a connection is ever established. Its defining characteristic is the roaming client, which enforces DNS security policies whether a device is on the…

Cloud Security

Question

Which feature in the DNS security module provide on and off network DNS protection?

Options

  • AUmbrella
  • BLayer-4 monitoring
  • CReal-time sandboxing
  • DData Loss Prevention

How the community answered

(64 responses)
  • A
    91% (58)
  • B
    2% (1)
  • C
    5% (3)
  • D
    3% (2)

Explanation

Umbrella (A) is Cisco's cloud-delivered DNS security solution that intercepts DNS queries and blocks malicious domains before a connection is ever established. Its defining characteristic is the roaming client, which enforces DNS security policies whether a device is on the corporate network or roaming off it - making it the only option here that covers both scenarios.

Why the distractors are wrong:

  • B. Layer-4 monitoring refers to transport-layer traffic inspection, not DNS-specific protection, and has no inherent on/off-network roaming capability.
  • C. Real-time sandboxing is a file/malware analysis technique (detonating suspicious files in an isolated environment) - it operates at the file layer, not the DNS layer.
  • D. Data Loss Prevention (DLP) focuses on preventing sensitive data exfiltration, not DNS query filtering or domain-based threat blocking.

Memory tip: Think of Umbrella as a literal umbrella - it covers you wherever you go, whether you're inside the office (on-network) or working from a coffee shop (off-network). The "U" in Umbrella = Ubiquitous DNS protection.

Topics

#DNS Security#Umbrella#Cloud Protection#Mobile Security

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