Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

C6M1 > Failover Clustering > Flashcards

Failover Clustering Flashcards

1
Q

Requirements for Failover Clustering

A
  • Identical hardware (as much as possible)
  • Network adapters should have identical configuration
  • All nodes should run the same OS version and edition, with the same updates installed
  • Seperate networks should be available for management, cluster traffic, and storage
  • Redundant networking equipment should be considered
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Command to confirm whether failover cluster successfully deployed

A

Test-Cluster [[-Node] ] [-Cluster ] [-Disk ] [-Force] [-Ignore ] [-Include ] [-InputObject ] [-List] [-Pool ] [-ReportName ] [-Confirm] [-WhatIf] [ ]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Command to create new failover cluster

A

New-Cluster [-Name] [-AdministrativeAccessPoint {None | ActiveDirectoryAndDns | Dns | ActiveDirectory} ] [-Force] [-IgnoreNetwork ] [-Node ] [-NoStorage] [-S2D] [-StaticAddress ] [ ]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What version of Windows Server was Multi-domain and workgroup clusters introduced?

A

Windows Server 2016

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the AD Computer Object for a cluster called?

A

Cluster Name Object (CNO). Clients send their requests to this rather than individual servers within the cluster.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What Authentication is used for Multi-Domain or WorkGroup Clusters?

A

Kerberos

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the process for creating a Multi-Domain or Workgroup Cluster

A

1) Create local administrator account with same password on each node
2) Add DNS suffix for all Domains represented in cluster for Multi-Domain cluster to each node in cluster
3) Create cluster with New-Cluster command

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the role of a witness in a Failover Cluster

A

To break a “tie” when an even number of nodes are split 50/50 on whether a node is available or not. If the quorum that a node sees drops below 50% + 1 then the node will remove itself from the cluster.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What can function as Witnesses in Failover Clusters

A

1) File Share Witness
2) Disk Witness
3) Cloud Witness (new in Windows Server 2016)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the command to add a witness, or modify the nodes that have votes in the cluster quorum?

A

Set-ClusterQuorum [-AccessKey ] [-AccountName ] [-CloudWitness] [-Cluster ] [-DiskOnly ] [-DiskWitness ] [-Endpoint ] [-FileShareWitness ] [-InputObject ] [-NoWitness] [ ]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

In which version of Windows Server was dynamic quorum management introduced?

A

Windows Server 2016

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the function of dynamic quorum management in Failover Clusters?

A

As a node takes itself out of a cluster, the vote of that node is automatically removed from the quorum records. This allows the cluster to keep on working, even if there is only one node left in the cluster.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the recommended witness for a cluster in a single site?

A

If an iSCSI disk of 512MB formatted with NTFS is available, this is recommended as the disk witness.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What forms of communications occur with cluster networks?

A
  • Client communications
  • iSCSI/Storage communications
  • Cluster communications (heartbeats, etc.)
  • Live Migration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When creating clusters, what rules are automatically applied to the networks.

A
  • Networks with iSCSI traffic are automatically excluded from having cluster communication
  • Networks without a gateway are automatically assigned cluster communication
  • Networks with a gateway are eligible for client and cluster communication
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the PowerShell command to get the status of the Network Adapters for a cluster?

A

Get-ClusterNetwork [[-Name] ] [-Cluster ] [-InputObject ] [ ]

17
Q

What is the difference between an authoritative and non-authoritative restore of a node in a cluster?

A

An non-authoritative restore (which will be the most common) is where the cluster database associated with the node is considered out of date and allowed to be overwritten by the cluster database currently in use by the cluster when the node is rejoined to the cluster. An authoritative restore will cause the cluster to revert to the cluster as it was when the backup was taken.

18
Q

What is the function of “Cluster Aware Updating” (CAU)?

A

Because all nodes of the cluster should have exactly the same software the cluster needs to manage updates. The CAU will note which nodes have been updated and initiate the updates. This can be done manually (called “Remote Updating mode”) or self-update. If Self-updating one node will have the CAU clustered role installed.

19
Q

What are the steps to update a node in a cluster?

A

1) Move roles off node to be updated to other nodes
2) Puts node into Maintenance mode
3) Installs updates as required and performs any nessacary actions (such as a restart)
4) Removes node from Maintenance mode

20
Q

With what version of Windows Server is it possible to do a node by node upgrade of the Operating System without destroying the Cluster?

A

Windows Server 2012 R2

21
Q

What are the steps to upgrade the operating system on a Windows Server 2012 R2 or Windows Server 2016 cluster?

A

Step 1. Pause the node.
Step 2. Drain the node of its workload by migrating clients to another node.
Step 3. Evict the node from the cluster.
Step 4. Reformat the system drive and perform a clean install of Windows Server 2016.
Step 5. Configure the network and storage connections.
Step 6. Install the Failover Clustering feature.
Step 7. Add the newly upgraded node back to the cluster.
Step 8. Re-implement the cluster workload.

22
Q

What is the command to update the operational functional level of the cluster?

A

Update-ClusterFunctionalLevel [-Cluster ] [-Force] [-InputObject ] [ ]

23
Q

What is the command to create an AD-detached cluster?

A

new-cluster mycluster1 node node1,node2 staticaddress 10.10.10.1 -nostorage administrativeaccesspoint dns

Because no AD CNO (Cluster Network Object) relies on DNS.

24
Q

What are some reasons that a VM node may loose connection with the cluster?

A
  • Cluster service not running
  • Memory problem
  • Software problem
  • Network communication disruption
  • Network driver issue
  • IP addressing issue
  • Damaged network cable
  • Disconnected network cable
25
Q

What states can an inactive VM Node in a cluster be?

A
  • Unmonitored: is not being watched by cluster service
  • Isolated: Is not an active part of the cluster, but still has the role
  • Quarantined: Drained of roles and removed from cluster for specific period of time because left and reentered cluster three times within hour.
26
Q

What is the option that determines whether the VM Node must provide a reason for entering isolated state, or whether it can use it freely?

A

ResiliencyLevel. A value of 1 means that must provide reason otherwise will fail. A value of 2 means can be repeatedly put into isolated state and given time to recover.

27
Q

What does the ResiliencyDefaultPeriod option determine?

A

The duration that all VM nodes in a cluster can be in an isolated state (default is 240 seconds).

28
Q

What is the difference between the ResiliencyPeriod option and the ResiliencyDefaultPeriod?

A

The ResiliencyPeriod determines the time (in seconds) that nodes of a group in a VM Cluster stay in the isolated state. A value of -1 means that will use the ResiliencyDefaultPeriod, which covers the cluster (and has a default value of 240 seconds).

29
Q

What is the default Quarantine threshold for a VM Cluster?

A

3 failures in an hour

30
Q

What is the option that determines how long a VM node will remain in quarantine?

A

QuarantineDuration. The default value is 7,200 seconds.

31
Q

What are three shared storage technologies that Windows Server 2016 support?

A
  • Fibre channel
  • Serial Attached SCSI (SAS)
  • Internet SCSI (iSCSI)
32
Q

What are the requirements or a Cluster Storage Pool

A
  • A minimum of 3 disks
  • A minimum of 4GB each
  • Connection via SAS or iSCSI

C6M1 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions