Which two methods fulfill the installation requirements?

As part of the preinstatlation process for adding two new nodes to your four-node UNIX cluster,
you are in discussions with the OS administrators about the operating system Installation and
setup for the two new nodes called RACNODE5 and RACNODE6.
The nodes have already been connected to the network infrastructure and the administrators are
ready for the OS installation. Which two methods fulfill the installation requirements?

A.
Install a new image of the OS, then configure SSH for the root user.

B.
Install a cloned image of the OS that at least matches the existing node images for drivers,
patches, and updates.

C.
Install a new image of the OS, that at least matches an existing node for drivers, patches, and
updates, and create the necessary OS users and groups with user and group IDs matching those
on the existing nodes.

D.
Install a new image of the OS that at least matches the existing node Images for drivers.

E.
Install a new image of the OS, and create the necessary OS users and groups with any user
and group IDs.

Explanation:
Prerequisite Steps for Adding Cluster Nodes
1. Make physical connections.
Connect the nodes’ hardware to the network infrastructure of your cluster. This includes
establishing electrical connections, configuring network interconnects, configuring shared disk
subsystem connections, and so on. See your hardware vendor documentation for details about
this step.
2. Install the operating system.
Install a cloned image of the operating system that matches the operating system on the other
nodes in your cluster. This includes installing required service patches, updates, and drivers. See
your operating system vendor documentation for details about this process. Note: Oracle
recommends that you use a cloned image. However, if the installation fulfills the installation
requirements, then install the operating system according to the vendor documentation.

3. Create Oracle users.
You must create all Oracle users on the new node that exist on the existing nodes. For example, if
you are adding a node to a cluster that has two nodes, and those two nodes have different owners
for the Grid Infrastructure home and the Oracle home, then you must create those owners on the
new node, even if you do not plan to install an Oracle home on the new node.
Oracle Clusterware Administration and Deployment Guide
11g Release 2 (11.2)