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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

While monitoring a development VLAN, you observe a host periodically sending forged ARP reply packets that associate the database server's IP address with the host's MAC address. Captures show SQL queries being intercepted and modified by that host before reaching the database. Which switch-level control is the most effective countermeasure to stop this man-in-the-middle technique?

  • Activate BPDU Guard to drop unauthorized spanning-tree frames

  • Enable Dynamic ARP Inspection (DAI) and rely on DHCP snooping to validate ARP replies

  • Implement port-mirroring and forward flows to a network IDS

  • Configure DHCP snooping rate limits on all access ports

ISC2 Systems Security Certified Practitioner (SSCP)
Network and Communication Security
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