Alibaba ACA-Developer Exam - Topic 3 Question 29 Discussion

Actual exam question for Alibaba's ACA-Developer exam

Question #: 29
Topic #: 3

An Elastic Compute Service (ECS) instance (private IP only) needs to read data from a RDS MySQL database in another VPC through a private IP address, and at the same time, RDS's public internet endpoint needs to be available for requests from some internet clients. Which steps must be taken to allow applications to access this RDS instance via both interfaces? (Number of correct answers: 2)

AMake sure that the security group of the ECS instance allows outbound access to the MySQL service port.

BAdd the private and public IP addresses of all applications to the RDS whitelist.

CConnect the two VPCs through CEN.

DConfigure a NAT gateway for the VPC to which the ECS instance belongs.

Show Suggested Answer

Suggested Answer: D

by Clay at Aug 21, 2022, 03:42 PM

Limited Time Offer

25%

Off

Get Premium ACA-Developer Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Johanna

4 months ago

I agree with C, but I’m not sure about D.

upvoted 0 times

...

Delila

4 months ago

Wait, do we really need a NAT gateway for this?

upvoted 0 times

...

Jannette

4 months ago

B seems unnecessary, just use security groups.

upvoted 0 times

...

Glenn

4 months ago

I think C is the right move to connect those VPCs.

upvoted 0 times

...

Deandrea

4 months ago

A is definitely needed for outbound access.

upvoted 0 times

...

Cherelle

5 months ago

I’m a bit confused about the NAT gateway; I thought it was mainly for outbound internet access, not for connecting to RDS, so I’m not sure about option D.

upvoted 0 times

...

Dominga

5 months ago

I practiced a question similar to this, and I think whitelisting IPs is usually necessary, so option B might be correct too.

upvoted 0 times

...

Dick

5 months ago

I'm not entirely sure, but I feel like connecting the VPCs through CEN could be important for private communication, so maybe option C?

upvoted 0 times

...

Mitsue

5 months ago

I remember something about security groups being crucial for allowing outbound access, so I think option A makes sense.

upvoted 0 times

...

Chantay

5 months ago

This seems like a straightforward question about email security policies. I'll carefully read through the options and think about the most likely reason the email was filtered.

upvoted 0 times

...

Rosalind

5 months ago

Ah, I see now. Save, compile, and then freeze the definition. Got it. This exam question is straightforward if you know the process.

upvoted 0 times

...

Mirta

5 months ago

Okay, I've got this. The question is asking what needs to be decided before considering the treatment of risks. That means we need to establish the criteria for determining risk acceptance first, which is option A.

upvoted 0 times

...