Discuss Alibaba ACA-Database Exam Topic 3 Question 49

Which of the following is the wrong statement about PolarDB design architecture?

AA PolarDB cluster contains one primary instance and up to 15 read-only instances

BPolarDB consolidate compute processes and storage processes in one box, allowing the database capacity to scale up and down to meet your
application needs in Alibaba Cloud

CRead/write splitting is enabled for PolarDB clusters by default, providing transparent, highly available, and self-adaptive load balancing for your
database

DHigh speed network connection is enabled between the DB server and the chunk server, and data are transferred using the Remote Direct Memory Access (RDMA) protocol

Suggested Answer: B

https://www.alibabacloud.com/help/doc-detail/58766.htm?spm=a2c63.p38356.b99.11.4e333181dMpFmV

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18 comments · newest first

Sherron 11 months ago

D is definitely true, high-speed connections are a must for performance.

Julio 11 months ago

Wait, RDMA for data transfer? That's impressive but hard to believe!

Jeanice 11 months ago

C sounds right, read/write splitting is super helpful!

Ozell 12 months ago

I think B is misleading, they don't really consolidate everything in one box.

Shaquana 12 months ago

A PolarDB cluster can have 15 read-only instances, that's cool!

Kaitlyn 1 year ago

I remember discussing the primary and read-only instances in class, and I think A is correct. So, that leaves us with B or D as potential wrong statements.

Rosio 1 year ago

I have a vague recollection that PolarDB does use RDMA for data transfer, but I can't recall the specifics. Maybe D is the one that's incorrect?

Deandrea 1 year ago

I practiced a similar question where read/write splitting was mentioned, and I believe it's true for PolarDB. So, I don't think C is the wrong statement.

Miss 1 year ago

I think option B sounds a bit off. I remember something about compute and storage being separate in PolarDB, but I'm not entirely sure.

Amalia 1 year ago

I'm a bit unsure about the details of PolarDB's design. I'll need to review my notes and try to eliminate the incorrect statement.

Maddie 1 year ago

I've studied this topic before, so I'm feeling confident. I'll carefully evaluate each option and select the one that is incorrect.

Artie 1 year ago

Okay, let's see. I need to identify the wrong statement about PolarDB design. I'll read through the options and try to spot any inaccuracies.

Bo 1 year ago

Hmm, I'm not too familiar with the PolarDB architecture. I'll need to think this through carefully.

Natalya 1 year ago

This question seems pretty straightforward. I think I can handle it.

Reita 1 year ago

I remember learning about these IDS evasion techniques in class, but I'm drawing a blank on the specifics right now. I'll have to make an educated guess and go with B.

Sunshine 1 year ago

Hmm, I'm a bit unsure about this one. The options don't seem entirely clear to me. I'll need to re-read the question and think it through step-by-step.

Karina 1 year ago

Hmm, I'm a little unsure about this one. I know they're both markup languages, but I'm not totally clear on the specific differences.

Zoila 1 year ago

I'm not sure about this one. Changing the port might affect the monitoring, but I'm not confident that it would completely stop the notifications. I'll have to think it through step-by-step.

Alibaba ACA-Database Exam - Topic 3 Question 49 Discussion