Domain 4.5: Managing networking resources — GCP ACE Practice Question 39

How to approach this question

Understand that GCP allows dynamic subnet expansion and remember how CIDR notation works (smaller number = more IPs).

Full Answer

B.gcloud compute networks subnets expand-ip-range [SUBNET_NAME] --prefix-length=20✓ Correct

gcloud compute networks subnets expand-ip-range [SUBNET_NAME] --prefix-length=20

Google Cloud allows you to expand the IP range of an existing subnet without downtime. You use the `expand-ip-range` command. In CIDR notation, a smaller prefix length means a larger network. Therefore, changing from /24 (256 IPs) to /20 (4096 IPs) expands the network.

Common mistakes

Choosing /28 thinking a larger number means more IPs. In CIDR, the number represents the network bits; fewer network bits mean more host bits (more IPs).

You have a custom VPC with a subnet in the us-east1 region using the CIDR block 10.0.0.0/24. You have run out of IP addresses in this subnet and need to expand it to accommodate more VMs. You want to do this without recreating the subnet or disrupting existing VMs.

Which command should you use?

How to approach this question

Full Answer

Common mistakes

Practice the full GCP Associate Cloud Engineer Practice Exam 7

More questions from this exam

You have a custom VPC with a subnet in the us-east1 region using the CIDR block 10.0.0.0/24. You have run out of IP addresses in this subnet and need to expand it to accommodate more VMs. You want to do this without recreating the subnet or disrupting existing VMs. Which command should you use?

How to approach this question

Full Answer

Common mistakes

Practice the full GCP Associate Cloud Engineer Practice Exam 7

More questions from this exam

You have a custom VPC with a subnet in the us-east1 region using the CIDR block 10.0.0.0/24. You have run out of IP addresses in this subnet and need to expand it to accommodate more VMs. You want to do this without recreating the subnet or disrupting existing VMs.

Which command should you use?