In VRRP hot backup and dual-link hot backup networking, the data synchronization function of the active and standby WACs is implemented through the HSB protocol. Which of the following are the data…

Question

Options

• AReal-time backup
• BManual backup
• CBatch backup
• DTiming synchronization

• A
  85% (22)
• B
  15% (4)

Explanation

HSB (Hot Standby Backup) protocol supports three automated synchronization methods: Real-time backup (A) continuously mirrors state changes from the active WAC to the standby as they happen, ensuring minimal data loss during a failover; Batch backup (C) performs a full bulk synchronization, typically triggered when the standby device first comes online or reconnects after a disruption; and Timing synchronization (D) periodically syncs data at configured intervals to keep the standby aligned over time. Together, these three methods cover immediate, on-join, and periodic synchronization scenarios.

Option B (Manual backup) is incorrect because HSB does not provide a manually triggered backup mechanism - all HSB synchronization is automated and protocol-driven, not administrator-initiated.

Memory tip: Think of the three correct methods as covering "Now, New, and Now-and-then" - Real-time (now, continuously), Batch (when new/rejoining), and Timing (now-and-then, periodically). If it requires a human to push a button, it's not an HSB method.

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