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A company ran out of IP address space in one of the Availability Zones in an AWS Region that the company uses. The Availability Zone that is out of space is assigned the
10.10.1.0/24 CIDR block. The company manages its networking configurations in an AWS CloudFormation stack. The company's VPC is assigned the 10.10.0.0/16 CIDR
block and has available capacity in the 10.10.1.0/22 CIDR block.
How should a network specialist add more IP address space in the existing VPC with the LEAST operational overhead?
Suggested Answer: D
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34 comments · newest first
LO
Lore
11 months ago
Wait, can you really just change the CIDR block like that? Seems risky!
JE
Jettie
11 months ago
D is a no-go, that subnet is outside the range.
JA
Jarod
11 months ago
C sounds complicated, why copy the stack?
CO
Colette
11 months ago
I think B is better, changing the VPC seems more logical.
AL
Alverta
12 months ago
A is the way to go! Just update the subnet.
MA
Ma
12 months ago
I’m leaning towards option C, but copying the stack seems like it could add unnecessary complexity. I need to double-check if that’s really the least overhead.
LY
Lynda
1 year ago
I feel like option A makes the most sense since we’re just expanding the existing subnet, but I’m a bit confused about the implications of changing the CidrBlock.
AI
Aileen
1 year ago
I remember a practice question where we had to modify the VPC settings, but this one feels different since we’re dealing with a specific subnet.
ST
Stefanie
1 year ago
I think we need to update the subnet resource, but I'm not sure if changing the CidrBlock to /22 is the right move.
GE
Geraldine
1 year ago
I'm a little confused by this question. The wording is a bit tricky, and I'm not sure I fully understand the implications of each option. I think I'll need to review the CloudFormation documentation again before deciding. Maybe I'll go with C just to be safe.
FR
Francine
1 year ago
Okay, let's see here. The key is to add more IP address space with the least operational overhead. I'm leaning towards option B - updating the VPC CIDR block. That way we don't have to mess with the individual subnets. Seems like the cleanest solution.
SH
Shannan
1 year ago
Hmm, I'm a bit unsure about this one. I'm trying to decide between A and C. Updating the existing subnet seems simpler, but creating a new subnet might give us more flexibility down the line. I'll have to think it through carefully.
GL
Glenna
1 year ago
This seems like a straightforward networking question. I think I'll go with option A - updating the existing subnet in the CloudFormation stack. That should be the least disruptive approach.
HE
Heidy
2 years ago
Wow, this is a real brain-teaser. I can see the merits of both A and C, but I think I'll go with A. Gotta love those CloudFormation shortcuts!
CO
Coral
2 years ago
Dong: Definitely, less operational overhead with that choice.
BU
Buddy
2 years ago
User 3: Definitely, it's a quick fix with minimal operational overhead.
TH
Theola
2 years ago
User 2: Yeah, updating the subnet resource in the CloudFormation stack is the way to go.
MI
Mica
2 years ago
User 1: I agree, A seems like the most efficient option.
AA
Aaron
2 years ago
User 3: I think A is the way to go as well. CloudFormation shortcuts for the win!
DO
Dong
2 years ago
User 2: Yeah, updating the subnet resource directly makes sense.
ST
Stevie
2 years ago
User 1: I agree, A seems like the most efficient option.
DE
Deeanna
2 years ago
I disagree, I believe option D is better. Creating a new subnet with a different CIDR block would provide more flexibility in the long run.
DO
Donette
2 years ago
I don't know, guys. All this networking stuff makes my head spin. I'm just going to go with whatever the answer key says is correct.
SE
Sean
2 years ago
Option D is just weird. Why create a new subnet when we have available capacity in the existing one? Definitely not that one.
RO
Rosendo
2 years ago
I'd have to go with C. Creating a new VPC with the larger CIDR block seems like the safest bet, even if it's a bit more work.
BE
Beatriz
2 years ago
I see your point, but updating the existing subnet might be easier and quicker.
CH
Chuck
2 years ago
A) Update the AWS :: EC2 :: Subnet resource for the Availability Zone in the CloudFormation stack. Change the CidrBlock property to 10.10.1.0/22.
GE
Geoffrey
2 years ago
That's a good point. It might be safer to create a new VPC with more IP address space.
AL
Alisha
2 years ago
C) Copy the CloudFormation stack. Set the AWS :: EC2 :: VPC resource CidrBlock property to 10.10.0.0/16. Set the AWS :: EC2 :: Subnet resource CidrBlock property to 10.10.1.0/22 for the Availability Zone.
AL
Alton
2 years ago
I think the best option is A. Updating the subnet resource seems like the most efficient way to add more IP address space.
NA
Nadine
2 years ago
Hmm, I think option A is the way to go. Updating the existing subnet resource seems like the easiest and most straightforward approach.
HO
Hoa
2 years ago
Definitely, less hassle than creating a new subnet or copying the entire stack.
JE
Jennie
2 years ago
I think so too, updating the subnet resource directly is the least complicated.
WH
Whitney
2 years ago
I agree, option A seems like the most efficient choice.