ASSOCIATE-CLOUD-ENGINEER Question #271: Real Exam Question with Answer & Explanation

Question

You are running out of primary internal IP addresses in a subnet for a custom mode VPC. The subnet has the IP range 10.0.0.0/20, and the IP addresses are primarily used by virtual machines in the project. You need to provide more IP addresses for the virtual machines. What should you do?

Options

• AAdd a secondary IP range 10.1.0.0/20 to the subnet.
• BChange the subnet IP range from 10.0.0.0/20 to 10.0.0.0/18.
• CChange the subnet IP range from 10.0.0.0/20 to 10.0.0.0/22.
• DConvert the subnet IP range from IPv4 to IPv6.

Explanation

To provide more IP addresses for virtual machines in a subnet that is running out of primary IP addresses, a secondary IP range can be added to the existing subnet, which can then be used for alias IP configurations on the VMs.

Common mistakes.

• B. Subnet primary IP ranges cannot be changed or expanded after creation; doing so would typically require creating a new subnet and migrating resources, which is disruptive.
• C. Changing the subnet IP range from /20 to /22 would decrease the number of available IP addresses (a /22 is smaller than a /20), making the problem worse.
• D. Converting to IPv6 addresses would provide a vast number of new addresses, but it's a significant network architecture change and does not directly solve the need for more IPv4 addresses for existing VMs in the current setup.

Concept tested. VPC subnet IP ranges and alias IPs

Reference. https://cloud.google.com/vpc/docs/alias-ips

No community discussion yet for this question.