Google Professional Cloud Network Engineer Question 625
Select 3Google Cloud PlatformYour company has a hybrid cloud setup with critical workloads running both on-premises and in Google Cloud. You are tasked with configuring a Dedicated Interconnect to establish a high-bandwidth, low-latency connection between the on-premises data center and Google Cloud. After setting up the Interconnect, you notice that the traffic is not flowing as expected. Which of the following configurations should you verify to ensure proper setup of the Dedicated Interconnect?
- A
The VLAN attachments (interconnect attachments) are correctly configured and associated with the appropriate Cloud Router.
- B
The BGP session between the on-premises router and the Cloud Router is established and functional.
- C
The Google Cloud Firewall rules are allowing BGP traffic on TCP port 179.
- D
The location of the Dedicated Interconnect matches the region of the Google Cloud resources being accessed.
- E
The Interconnect pricing plan (Standard or Premium Tier) is correctly selected.
Show answer and explanation
Correct answers: A, B, C
Explanation
To ensure proper traffic flow with a Dedicated Interconnect, critical configurations include correctly setting up VLAN attachments, establishing a functional BGP session, and allowing BGP traffic through the firewall. These configurations enable dynamic routing between on-premises infrastructure and Google Cloud. While the Interconnect location and pricing tier are important considerations during the initial setup, they do not directly impact connectivity issues after provisioning.
- A. Correct.
Correct. VLAN attachments connect your on-premises infrastructure to Google Cloud through the Dedicated Interconnect. If not configured properly or associated with the appropriate Cloud Router, the connection will not function.
- B. Correct.
Correct. BGP (Border Gateway Protocol) is required to dynamically exchange routing information between your on-premises router and Google's Cloud Router. If the BGP session is not established, routes will not propagate.
- C. Correct.
Correct. Google Cloud Firewall rules must allow BGP traffic on TCP port 179 to enable the BGP session. Without this, the dynamic routing will fail.
- D. Incorrect.
Incorrect. While choosing the correct Dedicated Interconnect location is important during setup, it does not directly affect traffic flow once the Interconnect is provisioned.
- E. Incorrect.
Incorrect. The Interconnect pricing plan determines cost and performance tiers but does not affect the technical configuration or traffic flow.