AZ-700 Question 19
Single answerYou are deploying a new internet-facing service in Azure. The service needs a stable IP address for DNS assignment and must support zone redundancy for high availability in supported regions. Which public IP address configuration best meets these requirements?
- A
Basic SKU, IPv4, Dynamic allocation
- B
Standard SKU, IPv6, Static allocation
- C
Standard SKU, IPv4, Static allocation with zone redundancy
- D
Basic SKU, IPv4, Static allocation with zone redundancy
Show answer and explanation
Correct answer: C
Explanation
Azure Public IP addresses come in two SKUs (Basic and Standard) and can be assigned as static or dynamic. For zone redundancy, you must use the Standard SKU. You also need a static allocation if you do not want the IP to change upon resource restarts or deallocation. This ensures compatibility with DNS assignments. Refer to the official Azure documentation (https://learn.microsoft.com/azure/virtual-network/ip-services/public-ip-addresses) for detailed guidance on configuring public IP addresses.
- A. Incorrect.
Option 1: Basic SKU, IPv4, Dynamic allocation � This does not meet the requirement for a stable (static) IP address. Basic SKU also has limited features compared to Standard, including restricted zone redundancy options.
- B. Incorrect.
Option 2: Standard SKU, IPv6, Static allocation � While Standard SKU supports zone redundancy, using IPv6 only does not match the requirement for a typical DNS assignment scenario that generally expects IPv4 or dual-stack support. Many services still require an IPv4 address for broader compatibility.
- C. Correct.
Option 3: Standard SKU, IPv4, Static allocation with zone redundancy � This meets all the stated requirements. The Standard SKU supports zone redundancy in supported regions, IPv4 ensures compatibility with common DNS use cases, and a static allocation method guarantees the IP remains constant.
- D. Incorrect.
Option 4: Basic SKU, IPv4, Static allocation with zone redundancy � Basic SKU does not support zone redundancy features in most scenarios. Although it provides a static IPv4 address, it fails the high availability requirement of zone redundancy.