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…
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)- A91% (58)
- B2% (1)
- C5% (3)
- D3% (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
Community Discussion
No community discussion yet for this question.