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ANS-C01Domain 4: Network Security, Compliance, and GovernanceNetwork SecuritymediumSingle choice

A security team needs full packet copies from specific EC2 instances sent to an appliance for deep-packet inspection — without installing agents. What provides this?

A.VPC Flow Logs

Flow Logs record connection metadata (IPs, ports, bytes) — no packet contents.

B.VPC Traffic Mirroring

Correct. Mirroring delivers encapsulated copies of actual packets to your inspection target.

C.AWS Network Firewall

Network Firewall inspects traffic in-line at the VPC boundary, not copies from arbitrary instance ENIs.

D.Route 53 Resolver query logs

Resolver logs cover DNS queries only.

Why this answer

Traffic Mirroring copies network packets from ENIs of selected instances to a mirror target (NLB or appliance ENI) — agentless, full-packet capture for inspection tools. Flow Logs are metadata only, not payloads.

Correct answer: B · Last reviewed 2026-10-26

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