Which three statements are true about Server Categorization in Oracle 12c Clusterware?
A.
All server attributes that may be used to determine the server category are discovered automatically by Oracle Clusterware.
B.
Different Hub nodes in a flex cluster may belong to separate administrator-defined categories.
C.
All hub nodes in a flex cluster belong to the same Oracle-supplied category.
D.
A server may be added to only one category using the crsctl utility.
E.
All leaf nodes in a flex cluster belong to the same Oracle-supplied category.
F.
All server attributes used for categorization are administrator modifiable.
Explanation:
CE: The SERVER_CATEGORY is the name of a registered server category, used as part of server categorization. Oracle Clusterware standard Clusters and
Oracle Flex Clusters have default categories of hub and leaf.
F: Server Category Attributes
You define servers into named categories, and assign attributes that define servers as members of that category. Some attributes that you can use to define
members of a category describe the state conditions for the server, and others describe the physical characteristics of the server. You can also create your own
characteristics to define servers as members of a particular category.
https://docs.oracle.com/database/121/CWADD/pbmgmt.htm#CWADD92638
I think C,E,F correct
SERVER_CATEGORY: The name of a registered server category, used as part of server
categorization. Oracle Clusterware standard Clusters and Oracle Flex Clusters have
default categories of hub and leaf.
Server pool attributes can be specified when you create a server pool, or they can be
modified after a server pool has already been created. The only required attribute is NAME.The optional attributes include:ACL,ACTIVE_SERVERS,EXECLUSIVE_POOLS,IMPORTANCE,MIN_SIZE,MAX_SIZE,SERVER_CATEGORY & SERVER_NAMES
administrators can specifically define different server categories for Hub Nodes and for Leaf Nodes
No A,F: Most server attributes are discovered automatically by Oracle Clusterware. An exception is the SERVER_LABEL attribute.
Yes B: Hub node may belong to different category due to attribute difference, like SERVER_LABEL for example.
yes C,E: Oracle Flex Cluster 12c provides two default named categories, HUB and LEAF for the specific server roles configured.
No D: You use server configuration attributes to categorize servers, as part of a server categorization management policy. **Servers are categorized, not assigned.
BCE