Your network contains an Active Directory forest. The forest contains domain controllers that run Windows Server 2012 R2.
The forest contains an Exchange Server 2016 organization.
You need to create a database availability group (DAG).
Which two actions should you perform before you create the DAG? Each correct answer presents part of the solution.
Each correct selection is worth one point.
NOTE:
Before creating a Database Availability Group (DAG) in an Exchange Server 2016 environment, two key preparatory steps are necessary. First, from Active Directory, you need to create a Clustered Name Object (CNO). This is required for Windows Server 2012 and Windows Server 2012 R2 DAG members due to permissions changes in Windows for computer objects, unless deploying a DAG without a cluster administrative access point. Second, on the witness server, you must add the Exchange Trusted Subsystem group to the local administrators group. This step ensures that the witness server can interact properly within the DAG environment, facilitating quorum management and high availability. These actions ensure that the necessary permissions and configurations are in place for the DAG to function correctly.
D+E • D. From Active Directory, create a clustered name object (CNO). • E. On the witness server, add the Exchange Trusted Subsystem group to the local administrators group.
True. In environments where computer account creation is restricted, or where computer accounts are created in a container other than the default computers container, you can pre-stage the cluster name object (CNO) and then provision the CNO by assigning permissions to it. Pre-staging the CNO is also required for Windows Server 2012 and Windows Server 2012 R2 DAG members due to permissions changes in Windows for computer objects. When deploying a database availability group (DAG) using Mailbox servers that are running Windows Server 2012 or Windows Server 2012 R2, you must pre-stage and provision the CNO, unless you're deploying a DAG without a cluster administrative access point. DAGs without cluster administrative access points do not use CNOs; therefore pre-staging is not required for those DAGs.
i agree
If you do not use any third party applications that require a cluster administrative access point, and your DAG is running Exchange 2016 or Exchange 2019 on Windows Server 2012 R2, then we recommend creating a DAG without an administrative access point. This simplifies DAG configuration, eliminates the need for one or more IP addresses, and reduces the attack surface of a DAG. https://docs.microsoft.com/en-us/exchange/high-availability/database-availability-groups/database-availability-groups?view=exchserver-2019
E. On the witness server, add the Exchange Trusted Subsystem group to the local administrators group. Is correct !
maybe not correct! Failover Cluster will be applied automatically when we create the DAG
A. From Failover Cluster Manager, create a failover cluster. E. On the witness server, add the Exchange Trusted Subsystem group to the local administrators group.
Answer A is false. You may install the Failover cluster feature but you MUST NOT create the failover cluster in advance (it will be done when running New-DatabaseAvailabilityGroup cmdlet).
When the first Mailbox server is added to a DAG, the following occurs: The Windows failover clustering component is installed, if it isn't already installed. A failover cluster is created using the name of the DAG. This failover cluster is used exclusively by the DAG, and the cluster must be dedicated to the DAG. Use of the cluster for any other purpose isn't supported. A CNO is created in the default computers container. Isn't created automatically? (The CNO)