Alibaba Exam ACA-Developer Topic 1 Question 42 Discussion

Actual exam question for Alibaba's ACA-Developer exam

Question #: 42
Topic #: 1

A developer creates a MySQL database service on a Linux ECS instance (ECS-A), and wants to access this database service from another instance (ECS-B) in the same VPC using the private IP address bound to the ECS instance, however, the connection can't be established. What could cause this? (Number of correct answers: 2)

AThe security group for ECS-A does not have the default MySQL service port open.

BThe built-in firewall on ECS-A has rules that prohibit external access to the MySQL service port.

CNo Internet IP address is configured for ECS-A.

DThe bind-address parameter set in the my.ini configuration file of the MySQL service is commented out.

Show Suggested Answer

Suggested Answer: B, C, D

by Cory at May 30, 2023, 11:22 AM

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Natalie

1 months ago

Maybe the developer should try using a tin can and a string. It's old-school, but you know what they say - if it ain't broke, don't fix it. Or in this case, if it's not working, go back to the basics!

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Merrilee

16 days ago

A: Good point. Those could be causing the connection issue.

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Sherly

24 days ago

B: Yeah, and they should also make sure the bind-address parameter in the my.ini configuration file is not commented out.

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Nina

25 days ago

A: Maybe the developer should check if the security group for ECS-A has the default MySQL service port open.

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Malinda

2 months ago

Ah, the joys of troubleshooting network issues. I bet the developer is cursing the day they decided to become a programmer instead of a professional cat herder. Hang in there, buddy!

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Jaime

2 months ago

No Internet IP address? That's a head-scratcher. I guess the developer was trying to be all fancy with the private IP, but forgot that sometimes you just need that good old public IP to make things work. Gotta love the cloud, am I right?

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Lynelle

22 hours ago

A: The security group for ECS-A does not have the default MySQL service port open.

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Merilyn

2 days ago

D: The bind-address parameter set in the my.ini configuration file of the MySQL service is commented out.

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Tish

4 days ago

C: No Internet IP address is configured for ECS-A.

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Joseph

17 days ago

C: Maybe they should check the firewall rules on ECS-A as well.

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Horace

20 days ago

B: Yeah, that could definitely be causing the issue.

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Brittney

1 months ago

B: The built-in firewall on ECS-A has rules that prohibit external access to the MySQL service port.

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Luther

1 months ago

A: The security group for ECS-A does not have the default MySQL service port open.

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Dalene

1 months ago

A: The security group for ECS-A does not have the default MySQL service port open.

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Winfred

2 months ago

The bind-address parameter in the my.ini file? Wow, that's a sneaky one. I bet the developer forgot to check the configuration, or maybe they're just not a MySQL wizard. Either way, it's gonna take some digging to figure this one out.

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Janna

2 months ago

Hmm, I think it's definitely the security group and the firewall rules. Gotta make sure those ports are open, no matter how obvious it seems. Rookie mistake, but we've all been there, right?

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