As shown in the figure, R1 and R2 form a VRRP backup group. So which of the following descriptions about this backup group are correct? (Multiple choice)

Question

Options

• AThe data of the three PCs is forwarded to the Internet via R2
• BThe data of the three PCs is forwarded to the Internet via R1
• CIf R1 fails, the flow direction will be changed.
• DIf R2 fails, the flow direction will be changed.

• A
  74% (40)
• B
  17% (9)
• C
  9% (5)

Explanation

In VRRP, one router acts as the Master (actively forwards traffic) and the other as the Backup (standby only). Based on the correct answers, R2 is the Master router, meaning all three PCs send their Internet-bound traffic through R2 under normal operation - making A correct. D is correct because when the Master (R2) fails, the Backup router (R1) detects the failure, promotes itself to Master, and takes over forwarding, changing the traffic flow.

B is wrong because R1 is the Backup and remains idle as long as R2 is healthy - it does not forward traffic in normal conditions. C is wrong because if R1 (the Backup) fails, there is no impact on traffic: R2 is still the Master and continues forwarding all data without interruption.

Memory tip: Think of VRRP like a primary/secondary relay race - only the runner holding the baton (Master) does the work. Losing the reserve runner (Backup fails → C) doesn't stop the race, but losing the active runner (Master fails → D) forces a handoff.

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