Alibaba ACA-Developer Exam - 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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Miss

3 months ago

I thought the remote instance was just for backups, not active failover.

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Ilda

3 months ago

D is a bit concerning, that could lead to data loss.

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Rebecka

3 months ago

C sounds right, but can the remote instance really take over like that?

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Larae

4 months ago

Totally agree with B, DTS is key for real-time sync!

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Reyes

4 months ago

A is true, you need that Alibaba Cloud Intranet address.

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Devon

4 months ago

I have a feeling that option D might not be right. I think we learned that deletions shouldn't sync to the disaster recovery instance to avoid data loss.

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Nobuko

4 months ago

Option C seems correct to me. I remember we talked about failover scenarios and how the remote instance can take over during outages.

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Rosio

4 months ago

I'm not entirely sure about option A. I remember something about needing a specific address, but I can't recall the details.

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Cristen

5 months ago

I think option B sounds familiar since we discussed Data Transmission Service in our last practice session. It seems crucial for real-time sync.

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Marci

5 months ago

The last option about database deletion synchronization is tricky. I'll need to think that through carefully before selecting my answers.

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Lawana

5 months ago

I feel pretty confident about this one. The key is understanding how RDS synchronizes data between the master instance and the remote disaster recovery instance.

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Allene

5 months ago

Hmm, the part about the primary database having an Alibaba Cloud Intranet address is interesting. I'll need to double-check that requirement.

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Lezlie

5 months ago

Okay, let's see. The question is asking about the correct statements regarding RDS's remote disaster recovery capabilities. I think I can eliminate a few options based on my understanding.

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Dominque

5 months ago

This question seems straightforward, but I want to make sure I understand the key points about RDS's remote disaster recovery capabilities.

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Bobbye

10 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

8 months 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

9 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

9 months ago

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

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Carlee

10 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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Matthew

8 months ago

User: 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

8 months ago

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Cheryl

8 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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Veta

9 months ago

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

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Justine

10 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

10 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

10 months ago

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

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Kimberlie

11 months ago

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

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Karol

11 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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