Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

Google Professional Cloud Network Engineer Exam - Topic 4 Question 86 Discussion

You are maintaining a Shared VPC in a host project. Several departments within your company have infrastructure in different service projects attached to the Shared VPC and use Identity and Access Management (IAM) permissions to manage the cloud resources in those projects. VPC Network Peering is also set up between the Shared VPC and a common services VPC that is not in a service project. Several users are experiencing failed connectivity between certain instances in different Shared VPC service projects and between certain instances and the internet. You need to validate the network configuration to identify whether a misconfiguration is the root cause of the problem. What should you do?
D) Enable VPC Flow Logs for all VPCs, and review the logs in Cloud Logging for the affected instances.
A) Review the VPC audit logs in Cloud Logging for the affected instances.
B) Use Secure Shell (SSH) to connect to the affected Compute Engine instances, and run a series of PING tests to the other affected endpoints and the 8.8.8.8 IPv4 address.
C) Run Connectivity Tests from Network Intelligence Center to check connectivity between the affected endpoints in your network and the internet.

Google Professional Cloud Network Engineer Exam - Topic 4 Question 86 Discussion

Actual exam question for Google's Professional Cloud Network Engineer exam
Question #: 86
Topic #: 4
[All Professional Cloud Network Engineer Questions]

You are maintaining a Shared VPC in a host project. Several departments within your company have infrastructure in different service projects attached to the Shared VPC and use Identity and Access Management (IAM) permissions to manage the cloud resources in those projects. VPC Network Peering is also set up between the Shared VPC and a common services VPC that is not in a service project. Several users are experiencing failed connectivity between certain instances in different Shared VPC service projects and between certain instances and the internet. You need to validate the network configuration to identify whether a misconfiguration is the root cause of the problem. What should you do?

Show Suggested Answer Hide Answer
Suggested Answer: D

The correct answer is D because it meets the following requirements:

It matches the hub-and-spoke model of the on-premises network, where each spoke is a separate VPC network that is connected to a central hub VPC network.

It minimizes management overhead and cost, because VPC Network Peering is a simple and low-cost way to connect VPC networks without using any external IP addresses or VPN gateways1.

It uses default networking quotas and limits, because VPC Network Peering does not consume any quota or limit for VPN tunnels, external IP addresses, or forwarding rules2.

It prevents connectivity between the spokes, because VPC Network Peering is non-transitive by default, meaning that a spoke can only communicate with the hub, not with other spokes1.To enforce this restriction, a third-party network appliance can be used as a default gateway in each spoke VPC network, which can filter out any traffic destined for other spokes3.

Option A is incorrect because it does not minimize cost, as Cloud VPN charges for egress traffic and requires external IP addresses for the VPN gateways4.Option B is incorrect because it does not prevent connectivity between the spokes, as VPC Network Peering allows direct communication between peered VPC networks by default1. Option C is incorrect because it does not minimize cost or use default quotas and limits, for the same reasons as option A.


VPC Network Peering overview | VPC

Quotas and limits | VPC

Hub-and-spoke network architecture | Cloud Architecture Center

Cloud VPN overview | Google Cloud

by Lucy at Jun 30, 2024, 03:52 AM

Limited Time Offer

25%

Off

Get Premium Professional Cloud Network Engineer Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Leoma
9 months ago
Wait, can we really trust those logs to pinpoint the issue?
upvoted 0 times
...
Margart
9 months ago
D sounds like a solid choice, but enabling flow logs can be a hassle.
upvoted 0 times
...
Cathrine
10 months ago
B seems too manual, why not use automated tools?
upvoted 0 times
...
Victor
10 months ago
A is a good start, but it might not show the whole picture.
upvoted 0 times
...
Shalon
10 months ago
I’d go with option C, Connectivity Tests are super useful!
upvoted 0 times
...
Chanel
10 months ago
I vaguely recall something about reviewing audit logs, but I can't remember if that's really useful for troubleshooting connectivity problems.
upvoted 0 times
...
Jutta
11 months ago
The Connectivity Tests from the Network Intelligence Center sound familiar; I feel like we practiced that in a lab. It might be the most efficient way to check the connections.
upvoted 0 times
...
Felicidad
11 months ago
I think running PING tests from the instances could help, but I wonder if that would really show the whole picture of the connectivity issues.
upvoted 0 times
...
Flo
11 months ago
I remember we talked about using VPC Flow Logs in class, but I'm not sure if that's the best first step here.
upvoted 0 times
...
Ruby
11 months ago
Okay, I've got a plan. I'll run the Connectivity Tests to check the connectivity between the affected endpoints and the internet. That should give me a good overview of where the issues are.
upvoted 0 times
...
Robt
11 months ago
Hmm, I'm a bit unsure about this one. Should I try pinging the affected instances and the 8.8.8.8 IP address to test the connectivity? Or would the Connectivity Tests from Network Intelligence Center be a better approach?
upvoted 0 times
...
Lajuana
11 months ago
This looks like a tricky networking question. I think I'll start by reviewing the VPC audit logs to see if there are any clues about the connectivity issues.
upvoted 0 times
...
Paz
11 months ago
I'm feeling pretty confident about this one. Enabling VPC Flow Logs and reviewing the logs in Cloud Logging seems like the best way to identify the root cause of the connectivity problems.
upvoted 0 times
...
Stefania
11 months ago
Okay, I've got this. Client-side scripts are responsible for managing the forms and form fields on a web page, so A is the right answer. The other options don't really fit with the role of client-side scripting.
upvoted 0 times
...
Ellsworth
11 months ago
I think this has to do with social engineering, right? They try to manipulate you into giving up info.
upvoted 0 times
...
Artie
11 months ago
Right, that makes sense. I'll go with turning off IGMP snooping and enabling multicast-direct as my two actions.
upvoted 0 times
...
Thaddeus
11 months ago
The risk management metrics seem like they would provide the most complete view of the security landscape. I'll focus on analyzing that option in more detail.
upvoted 0 times
...
Pok
11 months ago
This question feels familiar; I remember a practice problem that had a similar structure. Maybe it's A, but I'm hesitant.
upvoted 0 times
...
Benton
11 months ago
I remember that the STEP model is focused on validating requirements through testing, but was it during or after development?
upvoted 0 times
...
Barbra
1 year ago
Wait, we're troubleshooting a network issue and you're not suggesting I try turning it off and on again? Clearly, I'm in the wrong exam.
upvoted 0 times
Ngoc
1 year ago
A) Review the VPC audit logs in Cloud Logging for the affected instances.
upvoted 0 times
...
Tijuana
1 year ago
C) Run Connectivity Tests from Network Intelligence Center to check connectivity between the affected endpoints in your network and the internet.
upvoted 0 times
...
Chaya
1 year ago
B) Use Secure Shell (SSH) to connect to the affected Compute Engine instances, and run a series of PING tests to the other affected endpoints and the 8.8.8.8 IPv4 address.
upvoted 0 times
...
...
Reid
1 year ago
Enabling VPC Flow Logs is a good idea, but it's like trying to find a needle in a haystack. The Connectivity Tests will give you a much more targeted and actionable view of the problem.
upvoted 0 times
Murray
1 year ago
B) Use Secure Shell (SSH) to connect to the affected Compute Engine instances, and run a series of PING tests to the other affected endpoints and the 8.8.8.8 IPv4 address.
upvoted 0 times
...
Stephaine
1 year ago
A) Review the VPC audit logs in Cloud Logging for the affected instances.
upvoted 0 times
...
Frederick
1 year ago
C) Run Connectivity Tests from Network Intelligence Center to check connectivity between the affected endpoints in your network and the internet.
upvoted 0 times
...
Catherin
1 year ago
B) Use Secure Shell (SSH) to connect to the affected Compute Engine instances, and run a series of PING tests to the other affected endpoints and the 8.8.8.8 IPv4 address.
upvoted 0 times
...
...
Blair
1 year ago
Absolutely, the Connectivity Tests in the Network Intelligence Center are the way to go. They'll give you a clear understanding of where the connectivity issues are, and you can use that information to identify and fix the root cause.
upvoted 0 times
Hermila
1 year ago
B) Use Secure Shell (SSH) to connect to the affected Compute Engine instances, and run a series of PING tests to the other affected endpoints and the 8.8.8.8 IPv4 address.
upvoted 0 times
...
Iola
1 year ago
C) Run Connectivity Tests from Network Intelligence Center to check connectivity between the affected endpoints in your network and the internet.
upvoted 0 times
...
...
Ronald
1 year ago
Using SSH to run PING tests is a standard troubleshooting technique, but it's limited to the instances you can directly access. Leveraging the Network Intelligence Center's Connectivity Tests would be a more efficient way to test connectivity across the entire network.
upvoted 0 times
...
Patrick
1 year ago
Reviewing the VPC audit logs is a good starting point, but it may not provide a complete picture of the connectivity issues. I would also run Connectivity Tests to get a more comprehensive view of the network configuration.
upvoted 0 times
...
Tien
1 year ago
I also think running Connectivity Tests from Network Intelligence Center could be helpful in checking connectivity to the internet.
upvoted 0 times
...
Robt
1 year ago
I agree with Selma. That could help us identify any misconfigurations causing the connectivity issues.
upvoted 0 times
...
Selma
1 year ago
I think we should review the VPC audit logs in Cloud Logging for the affected instances.
upvoted 0 times
...
Merilyn
1 year ago
I believe running Connectivity Tests from Network Intelligence Center would also help in validating the network configuration.
upvoted 0 times
...
Corinne
1 year ago
I agree with Glory. It's important to check the logs to identify any misconfigurations.
upvoted 0 times
...
Glory
1 year ago
I think we should review the VPC audit logs in Cloud Logging for the affected instances.
upvoted 0 times
...

Save Cancel