Exam 1z0-078 topic 1 question 13 discussion

C: Some Grid Infrastructure patchsets may not be installed in a rolling fashion." This statement is true Rolling patches cannot be done when the Oracle software files are stored in a shared cluster file system, which requires a complete outage to patch or upgrade B: "When performing rolling patches, the VIPs for the node being patched are relocated to another node." This statement is false. The sources do not describe any relocation of VIPs (Virtual IP Addresses) during patching, although services are migrated between nodes. While database instances and services might be migrated off the node being patched, the VIP associated with the node is not moved. This is also not mentioned in the context of zero downtime patching

A. They can be applied in-place. This statement is not always true as some patches require downtime. B. When performing rolling patches, the VIPs for the node being patched are relocated to another node. This statement is true. During rolling patches, the Virtual IP addresses (VIPs) are relocated to other nodes to ensure high availability and minimize disruption. C. Some Grid Infrastructure patchsets may not be installed in a rolling fashion. While some critical patches might not support rolling upgrades, this is less common with regular patchsets. D. When performing rolling patches, crsctl query crs softwareversion always displays the earliest version of the software running anywhere in the cluster. This is incorrect. crsctl query crs softwareversion shows the version of the software on the node where the command is run. To see the cluster-wide version, you would use crsctl query crs activeversion.

Rolling fashon: Nodes are restarted sequentially, so that only one node at a time will be offline, while all other nodes in the cluster remain online. VIP must be move to another node while patching the node

it is B