Exam 1Z0-1151-25 Topic 1 Question 43 Discussion

The correct practice is to use private IP addresses from other private address spaces (like 10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16) or, as is often the case with cloud interconnects, a dedicated, pre-agreed upon set of IP addresses specifically for the interconnect link, often provided by the cloud providers or a network service provider.
The other statements are correct:
a) The Oracle Cloud Infrastructure (OCI) FastConnect virtual circuit requires two pairs of BGP IP addresses: a primary and a secondary pair. This is for redundancy. If the primary BGP session fails, the secondary session takes over.
b) Each BGP session established over Oracle Interconnect for Azure uses a /30 subnet for the link local addresses. A /30 subnet provides four IP addresses, but only two are usable for the point-to-point connection between the OCI DRG and the Azure ExpressRoute router.
d) The customer is responsible for providing the BGP IP addresses for both the OCI and Azure sides of the connection. This is generally true, although the process may involve coordination with the cloud providers to ensure the addresses are compatible and do not conflict with existing networks.