Google Professional Cloud Network Engineer Question 640
Select 2Google Cloud PlatformYour organization is deploying a multi-cloud architecture with workloads hosted on both Google Cloud Platform (GCP) and another cloud provider. To establish a high-performance, low-latency connection between both clouds, you need to configure a Cross-Cloud Interconnect connection. After provisioning the connection, you must configure VLAN attachments for your workload traffic. Which steps are required to configure the Cross-Cloud Interconnect and VLAN attachments correctly?
- A
Reserve an IP address range for the VLAN attachment in the Google Cloud region where the Interconnect is provisioned.
- B
Create a VLAN attachment in the Google Cloud Console and associate it with the Interconnect.
- C
Configure BGP sessions between the VLAN attachment and the on-premises router.
- D
Ensure the VLAN attachment MTU size is set to 1500 bytes, as this is the default for Google Cloud.
- E
Tag the VLAN attachment with the appropriate VPC network to enable traffic routing.
Show answer and explanation
Correct answers: B, E
Explanation
To establish a Cross-Cloud Interconnect connection with VLAN attachments, you must first create the VLAN attachment in the Google Cloud Console and associate it with the Interconnect. Additionally, the VLAN attachment must be tagged with the appropriate VPC network to enable proper traffic routing. Missteps like incorrect MTU size or unnecessary IP reservations can lead to connectivity problems or misconfigurations.
- A. Incorrect.
Reserving an IP address range for the VLAN attachment is not required. IP address allocation for VLAN attachments is dynamically handled during setup.
- B. Correct.
Creating a VLAN attachment and associating it with the Interconnect is a necessary step to establish the connection between Google Cloud and the other cloud provider.
- C. Incorrect.
BGP sessions are configured between the Interconnect router and the external network, not directly with the VLAN attachment.
- D. Incorrect.
The MTU size for VLAN attachments in Google Cloud is 1440 bytes by default, not 1500 bytes. Using the wrong MTU size can result in connectivity issues.
- E. Correct.
Tagging the VLAN attachment with the appropriate VPC network is essential for ensuring the correct routing of traffic.