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← Fortinet NSE 4 - FortiOS 7.6 Administrator
NSE 4 · FGCP high availability

Practice question 49 of 440 · medium

After a physical HA takeover, neighboring switches still need to learn the new forwarding location. Which cluster behavior assists convergence?

Choose the single best answer.

  1. A.Retain only the failed member physical MAC and send no address announcements
  2. B.Use cluster virtual MAC identity and send gratuitous ARP
  3. C.Create a new unrelated gateway IP for every client after failover
  4. D.Rely on DHCP lease renewal as the sole Layer 2 convergence mechanism
Show the answer and explanation

✓ Correct answer

  • Use cluster virtual MAC identity and send gratuitous ARP

The cluster VMAC and gratuitous ARP preserve gateway identity and update neighboring learning. Changing client gateways or waiting solely for DHCP does not provide the documented takeover behavior.

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Unofficial study material, independently created and unaffiliated with Fortinet. Questions are original practice items, not recalled exam content. Published-topic coverage does not guarantee examination success. FortiOS baseline is 7.6.0; independently versioned FortiSASE and CNF references are qualified where relevant.