As shown in the figure, the primary and secondary backup networking based on VRRP is wrong. In the following description of this scenario, which one is wrong?

Question

Options

• AIn order to ensure the consistency of link switching, the firewall implements device status
• BThe configuration and status information of firewall A is backed up to firewall B in real time
• CDual-machine hot backup can improve network reliability
• DThe firewall GE0/0/1 interface is the heartbeat interface, and the connected line is the heartbeat

• A
  4% (1)
• B
  74% (17)
• C
  9% (2)
• D
  13% (3)

Explanation

Option B is the incorrect statement because in a dual-machine hot backup scenario using VRRP, state synchronization is bidirectional - both firewalls continuously sync session tables and status to each other, not unidirectionally from A to B. Additionally, VRRP itself handles gateway redundancy, while a separate heartbeat/sync mechanism (like VGMP on Huawei devices) manages state replication; "configuration" is not dynamically backed up in real time the way the statement implies.

Why the distractors are correct (and therefore not the answer):

• A is correct: Firewalls use device/link status tracking (e.g., interface tracking with VRRP) to ensure both devices switch roles consistently when a failure occurs.
• C is correct: The entire purpose of dual-machine hot backup is to eliminate single points of failure and increase network reliability.
• D is correct: In Huawei firewall setups, a dedicated interface (commonly GE0/0/1) serves as the heartbeat interface, carrying the synchronization link between the two firewalls.

Memory tip: Think of "hot backup = hot both ways" - if a statement describes one-way or one-sided synchronization in a redundancy scenario, it's almost certainly wrong. True hot standby is always a mutual, bidirectional relationship.

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