Which statement about the DVS engine is true?

Question

Options

• AThe DVS engine can use Webroot and McAfee scanning in parallel
• BThe DVS engine never inspects the client HTTP request.
• CThe DVS engine generates the WBRS.
• DThe DVS engine is only used for Layer 4 traffic monitoring.

• A
  91% (40)
• B
  5% (2)
• C
  2% (1)
• D
  2% (1)

Explanation

Option A is correct because the DVS (Dynamic Vectoring and Streaming) engine on Cisco's Web Security Appliance is designed to coordinate multiple anti-malware scanning engines simultaneously - it can send content to both Webroot and McAfee in parallel, improving detection coverage without proportionally increasing latency.

Why the distractors are wrong:

• B is false: the DVS engine does inspect HTTP request content, not just responses - it can scan uploaded files and request bodies.
• C is false: the Web-Based Reputation Score (WBRS) is generated by Cisco's cloud-based Web Reputation Filters (backed by Talos intelligence), not the DVS engine. DVS handles malware scanning, not reputation scoring.
• D is false: Layer 4 Traffic Monitoring (L4TM) is a separate component that watches all TCP traffic on all ports. DVS focuses on web content scanning (HTTP/HTTPS), not L4 monitoring.

Memory tip: Think of DVS as a "scanning coordinator" - its superpower is running multiple AV engines at the same time (parallel = faster). If an answer implies DVS does reputation scoring or is limited to a single traffic layer, it's a distractor.

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