Alibaba Exam ACA-Developer Topic 7 Question 76 Discussion

Actual exam question for Alibaba's ACA-Developer exam

Question #: 76
Topic #: 7

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)

AThe primary database (the one to be backed up) must have an Alibaba Cloud Intranet address

BRDS realizes real-time synchronization between the master instance and the remote disaster recovery instance through Data Transmission Service (DTS)

CWhen 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

DWhen the database deletion operation is performed on the master instance, the operation will also be synchronized to the disaster recovery instance

Show Suggested Answer

Suggested Answer: B

by Mariann at Dec 07, 2024, 06:54 PM

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Bobbye

2 months ago

This all sounds pretty technical, but I'm just glad they have a disaster recovery option. Knowing my luck, I'd probably end up with a primary instance that's as reliable as a cardboard boat in a hurricane.

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Felix

4 days ago

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

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Carin

1 months ago

B) RDS realizes real-time synchronization between the master instance and the remote disaster recovery instance through Data Transmission Service (DTS)

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Yuette

1 months ago

A) The primary database (the one to be backed up) must have an Alibaba Cloud Intranet address

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Carlee

2 months ago

Wait, so the primary database has to be on the Alibaba Cloud Intranet? Does that mean I can't use my trusty on-premises server? Darn, there goes my weekend project.

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Howard

1 days ago

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Cheryl

6 days ago

B) RDS realizes real-time synchronization between the master instance and the remote disaster recovery instance through Data Transmission Service (DTS)

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Veta

1 months ago

A) The primary database (the one to be backed up) must have an Alibaba Cloud Intranet address

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Justine

2 months ago

Hold on, so we can't just delete data from the primary and expect it to vanish from the disaster recovery instance? That's a bummer, I was hoping for a quick way to clean house. Oh well, guess I'll have to do it the old-fashioned way.

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Timothy

2 months ago

I'm not sure about option A, but B, C, and D seem logical for ensuring data reliability.

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Howard

2 months ago

I agree with Kimberlie, those options make sense for disaster recovery capabilities.

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Kimberlie

2 months ago

I think the correct answers are B, C, and D.

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Karol

2 months ago

Okay, I think I've got this. The primary database must have an Alibaba Cloud Intranet address, and RDS uses DTS for real-time synchronization between the master and remote disaster recovery instances. If the primary and standby instances can't be reached, the remote instance can be switched to the primary. But the database deletion won't be synced to the disaster recovery instance. Looks like I've got the three correct answers covered.

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