Which interconnect design is NOT supported for Oracle Clusterware?
A.
crossover cable design
B.
single switch design
C.
multiple switch design
D.
redundant interconnect design
Explanation:
2.7.1 Network Hardware Requirements
For the private network, the interface must support the user datagram protocol (UDP) using high-speed network adapters and switches that support TCP/IP (minimum requirement 1 Gigabit
Ethernet).
Note:
UDP is the default interface protocol for Oracle RAC, and TCP is the interconnect protocol for
Oracle Clusterware. You must use a switch for the interconnect. Oracle recommends that you use
a dedicated switch.
Oracle does not support token-rings or crossover cables for the interconnect.
Oracle Grid Infrastructure Installation Guide
11g Release 2 (11.2)
A simple network crossover cable may at first appear to be a low-cost alternative to connect a two-node cluster, enabling you to create a directly linked network between two cluster nodes. However, this alternative is not supported as an interconnect with RAC on Linux. Without the electrical isolation provided by a switch, NIC hardware errors on one of the servers could also cause hardware errors on the other server, endering the entire cluster unavailable. This configuration also eliminates the option if a redundant networking configuration and prevents the addition of more than two nodes to the cluster
A is not supported.
So A is the correct answer