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Alibaba ACA-Developer Exam - Topic 6 Question 96 Discussion

For business scenarios with strong data reliability requirements or financial business scenarios with regulatory requirements related to data durability and availability, RDS MySQL provides a remote backup mechanism to improve reliability. Which of the following is correct, regarding RDS's remote disaster recovery capabilities? (Number of correct answers: 3)
D) When the database deletion operation is performed on the master instance, the operation will also be synchronized to the disaster recovery instance
A) The primary database (the one to be backed up) must have an Alibaba Cloud Intranet address
B) RDS realizes real-time synchronization between the master instance and the remote disaster recovery instance through Data Transmission Service (DTS)
C) When an outage occurs in the area where the primary instance is located, and neither the primary instance (Master) nor the standby instance (Slave) can be connected to, the remote disaster recovery instance can be switched to the primary instance

Alibaba ACA-Developer Exam - Topic 6 Question 96 Discussion

Actual exam question for Alibaba's ACA-Developer exam
Question #: 96
Topic #: 6
[All ACA-Developer Questions]

For business scenarios with strong data reliability requirements or financial business scenarios with regulatory requirements related to data durability and availability, RDS MySQL provides a remote backup mechanism to improve reliability. Which of the following is correct, regarding RDS's remote disaster recovery capabilities? (Number of correct answers: 3)

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Suggested Answer: D

by Felicitas at Apr 10, 2026, 10:54 AM

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Valentin
26 days ago
A seems off, I thought you could use public IPs too.
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Allene
1 month ago
B is definitely correct, DTS is key for syncing!
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Felicidad
2 months ago
I recall that when you delete something in the master instance, it usually gets synced to the disaster recovery instance, so option D seems correct to me.
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Audry
2 months ago
I’m a bit confused about option C; I thought the remote instance could only take over if the primary instance was completely down, but I’m not sure.
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Hubert
2 months ago
I think option B sounds familiar because we discussed how DTS helps with real-time data synchronization in our practice sessions.
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Benton
2 months ago
I remember something about needing an Alibaba Cloud Intranet address for the primary database, but I'm not entirely sure if that's a strict requirement.
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