Explanation:
When a VPC runs out of usable IP addresses, a network engineer can attach an additional CIDR block to the VPC to provide more IP addresses. The additional CIDR block must not overlap with the existing CIDR block of the VPC or any other CIDR blocks already attached to the VPC. The existing VPC CIDR block is 172.16.0.0/16. Option A (172.17.0.0/29) is too small and overlaps with the existing CIDR block. Option B (10.0.0.0/16) does not overlap with the existing CIDR block and is a valid choice. Option C (172.17.0.0/16) overlaps with the existing CIDR block. Option D (192.168.0.0/16) does not overlap with the existing CIDR block and is also a valid choice. Therefore, the correct options are B and D.
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Which additional CIDR block can the network engineer associate with the VPC to resolve the issue of running out of usable IP addresses, given that the current VPC CIDR block is 172.16.0.0/16?
A
172.17.0.0/29
B
10.0.0.0/16
C
172.17.0.0/16
D
192.168.0.0/16