which interface are the SCAN and node VIPs (Virtual IP addresses) associated?

ETH0 is the public interface on all your RAC nodes.
ETH1 is the private interface on all your RAC nodes for use with the cluster interconnect.
ETH2 is used on all the RAC nodes for accessing storage on a filer using network attached
storage (NAS).
With which interface are the SCAN and node VIPs (Virtual IP addresses) associated?

A.
ETH0 for the node VIPs and ETH1 for the SCAN VIPs

B.
ETH0 for both the node VIPs and the SCAN VIPs

C.
ETH1 for both the node VIPs and the SCAN VIPs

D.
ETH1 for the node VIPs and ETH0 for the SCAN VIPs

E.
with both ETH0 and ETH1 for both the node VIPs and the SCAN VIPs

Explanation:
2.7.2 IP Address Requirements
Before starting the installation, you must have at least two interfaces configured on each node:
One for the private IP address and one for the public IP address.
You can configure IP addresses with one of the following options:
Dynamic IP address assignment using Oracle Grid Naming Service (GNS). If you select this
option, then network administrators assign static IP address for the physical host name and
dynamically allocated IPs for the Oracle Clusterware managed VIP addresses. In this case, IP
addresses for the VIPs are assigned by a DHCP and resolved using a multicast domain name
server configured as part of Oracle Clusterware within the cluster. If you plan to use GNS, then
you must have the following:
– A DHCP service running on the public network for the cluster
– Enough addresses on the DHCP to provide 1 IP address for each node’s virtual IP, and 3 IP
addresses for the cluster used by the Single Client Access Name (SCAN) for the cluster
Static IP address assignment. If you select this option, then network administrators assign a fixed
IP address for each physical host name in the cluster and for IPs for the Oracle Clusterware
managed VIPs. In addition, domain name server (DNS) based static name resolution is used for
each node. Selecting this option requires that you request network administration updates when
you modify the cluster.
Note:
Oracle recommends that you use a static host name for all server node public hostnames.
Public IP addresses and virtual IP addresses must be in the same subnet.
Oracle only supports DHCP-assigned networks for the default network, not for any subsequent
networks.
Oracle Grid Infrastructure Installation Guide
11g Release 2 (11.2) for Linux