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Amazon BDS-C00 Exam - Topic 9 Question 99 Discussion

You have a load balancer configured for VPC, and all backend Amazon EC2 instances are in service. However, your web browser times out when connecting to the load balancer's DNS name. Which options are probable causes of this behavior?
B) The Amazon EC2 instances do not have a dynamically allocated private IP address
A) The load balancer was not configured to use a public subnet with an Internet gateway configured
C) The security groups or network ACLs are not properly configured for web traffic
D) The load balancer is not configured in a private subnet with a NAT instance
E) The VPC does not have a VGW configured

Amazon BDS-C00 Exam - Topic 9 Question 99 Discussion

Actual exam question for Amazon's BDS-C00 exam
Question #: 99
Topic #: 9
[All BDS-C00 Questions]

You have a load balancer configured for VPC, and all backend Amazon EC2 instances are in service. However, your web browser times out when connecting to the load balancer's DNS name. Which options are probable causes of this behavior?

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Suggested Answer: B

by Nickole at Aug 02, 2024, 08:09 PM

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Wei
6 months ago
E is unlikely, VGW is for VPN, not this issue.
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Lashandra
6 months ago
Surprised no one mentioned D, that could be a big problem too!
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Aleshia
7 months ago
B doesn't make sense, EC2 instances should have private IPs.
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Brent
7 months ago
I think C is the main issue here, check those security groups!
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Annice
7 months ago
A is definitely a possibility, needs a public subnet.
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Carin
7 months ago
I vaguely recall that private IP addresses are usually assigned automatically, so option B seems unlikely, right?
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Tamie
7 months ago
I practiced a similar question where the subnet configuration was crucial. I wonder if option D could be the issue here too.
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Helene
8 months ago
I’m not entirely sure, but I think option C makes sense since security groups can block traffic if not set up right.
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Willetta
8 months ago
I remember something about load balancers needing to be in a public subnet to route traffic properly. Could that be option A?
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Ricarda
8 months ago
I'm not entirely sure about this one. There are a few different networking components that could be causing the issue. I'll need to carefully review the VPC configuration, security groups, and load balancer settings to pinpoint the problem.
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Roselle
8 months ago
This seems straightforward to me. The most likely cause is that the load balancer is not configured in a public subnet with an internet gateway. That would prevent external clients from accessing the instances through the load balancer.
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Olive
8 months ago
Okay, I've got a strategy here. I'll go through the options one by one and eliminate the ones that don't seem relevant. The key is to focus on the networking setup and make sure the load balancer and instances are properly configured to handle web traffic.
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Werner
8 months ago
Hmm, I'm a bit confused by this question. I'm not sure if the issue is with the load balancer itself or the EC2 instances behind it. I'll need to think through the different networking components and how they might be impacting the connection.
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Denise
8 months ago
This looks like a tricky one, but I think I can work through it. I'll start by considering the load balancer configuration and whether it's set up in a public subnet with an internet gateway.
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Cordie
8 months ago
I'm a bit confused by this question. The options seem a bit obscure, and I'm not sure which ones the tostring function can actually handle. I'll have to do some research on the function's capabilities before answering.
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Shawna
1 year ago
Wait, you mean I actually have to configure the network stuff correctly? I was just going to unplug the router and plug it back in. *rolls eyes*
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Ethan
1 year ago
This one's a head-scratcher! Maybe the load balancer is just hungover and needs a strong cup of coffee to start working again. *chuckles*
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Lucille
11 months ago
E) The VPC does not have a VGW configured
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Nohemi
11 months ago
C) The security groups or network ACLs are not properly configured for web traffic
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Sena
12 months ago
A) The load balancer was not configured to use a public subnet with an Internet gateway configured
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Ardella
1 year ago
Hmm, I'm torn between A and C. Either the load balancer isn't set up in the right subnet, or the network config is blocking the traffic. I'll need to double-check those settings.
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Kaycee
1 year ago
I'm going with B. If the instances don't have a dynamically allocated private IP, the load balancer won't be able to route traffic to them properly.
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Noe
11 months ago
E) The VPC does not have a VGW configured
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Kenneth
12 months ago
C) The security groups or network ACLs are not properly configured for web traffic
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Karma
12 months ago
A) The load balancer was not configured to use a public subnet with an Internet gateway configured
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Candra
12 months ago
E) The VPC does not have a VGW configured
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Cecil
12 months ago
C) The security groups or network ACLs are not properly configured for web traffic
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Helaine
1 year ago
A) The load balancer was not configured to use a public subnet with an Internet gateway configured
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Fanny
1 year ago
Option C seems the most likely culprit here. The security groups or network ACLs are probably not allowing web traffic to reach the backend instances.
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Ilda
11 months ago
Let's make sure the security groups are properly configured for web traffic to pass through.
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Karl
11 months ago
Maybe we need to update the inbound rules to allow web traffic to the EC2 instances.
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Roosevelt
1 year ago
Yeah, that makes sense. We should check the security group and ACL settings.
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Tiffiny
1 year ago
I think option C is the issue. The security groups or network ACLs might be blocking web traffic.
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Nancey
1 year ago
I think option A could also be a probable cause. If the load balancer is not configured to use a public subnet with an Internet gateway, it may not be accessible from the web browser.
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Maurine
1 year ago
I agree with Marvel. Option C makes sense because if the security groups or network ACLs are not set up correctly, it could block web traffic.
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Marvel
1 year ago
I think the probable cause could be option C, security groups or network ACLs not properly configured.
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