Which two statements about Cisco ESA clusters are true? (Choose two.)
A.
A cluster must contain exactly one group.
B.
A cluster can contain multiple groups.
C.
Clusters are implemented in a client/server relationship.
D.
The cluster configuration must be managed by the cluster administrator.
E.
The cluster configuration can be created and managed through either the GUI or the CLI.
I would say B and D are correct according to this Cisco website : http://www.cisco.com/c/en/us/support/docs/security/email-security-appliance/118174-technote-esa-00.html
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B and E is correct
Once you have created a cluster, you can manage non-cluster configuration settings from either the GUI or the CLI
you can create cluster via CLI
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