AWS Certified Solutions Architect – Professional — Question 878

In a VPC, can you modify a set of DHCP options after you create them?

Answer options

• A. Yes, you can modify a set of DHCP options within 48 hours after creation and there are no VPCs associated with them.
• B. Yes, you can modify a set of DHCP options any time after you create them.
• C. No, you can't modify a set of DHCP options after you create them.
• D. Yes, you can modify a set of DHCP options within 24 hours after creation.

Correct answer: C

Explanation

In Amazon VPC, DHCP options sets are immutable once they are created. If you need to change your DHCP configuration, you must create a new set of DHCP options and associate it with your VPC instead of modifying the existing one. This makes options A, B, and D incorrect as they falsely claim modifications are allowed under certain conditions.