Exam SK0-005 topic 1 question 121 discussion

D. This ensure a noted is actively running while the patch is being applied to another.

D. Failover all VMs This ensures that the VMs remain operational and accessible while the host system is being updated, minimizing downtime and maintaining the availability of services. Why? Maintains Service Availability: By failing over VMs to another host, critical services and applications continue to run without interruption. Minimizes Risk: Moving VMs away from the host being patched reduces the risk of service disruption if unexpected issues arise during the patching process. Failing over all VMs to another host within the cluster is a direct and effective way to ensure that services remain available and uninterrupted during the maintenance process, adhering to best practices for managing high availability environments.

D. Failover all VMs. This option means to move all the virtual machines running on the host that needs to be patched to another host in the cluster. This way, the host can be safely patched without affecting the availability or performance of the virtual machines. Failover can be done manually or automatically by using a cluster management tool or a hypervisor feature.

Falling back cluster services is not the BEST action to perform before applying patches to one of the hosts in a high availability cluster because it does not ensure that there is no downtime during the patching process. Failing over all VMs ensures that there is no downtime during the patching process.

I believe C is the answer. The purpose of Active-Active is to have zero down-time. If a node fails, it automatically sends all that traffic to the other running node (as they were active-active, aka "Live Failover"). This would allow the patching/rebooting to occur with no downtime. Also, it is less work than failing over everything manually etc, and it does state "BEST" action to perform.

Cluster Patching Process The process to patch cluster nodes is to bring down one node at a time for patching (and the subsequent reboot) and then return it to service. This process is accomplished for each cluster member, never bringing down all of the nodes simultaneously. It is not usually realistic to manage this process manually. Services such as Microsoft SCCM and Microsoft Cluster Aware Updating can automate the process. The Official CompTIA Server+ Study Guide (Exam SK0-005) I think the most important is the process to patch cluster nodes is to bring down one node at a time for patching (and the subsequent reboot) and then return it to service. If you have one (or more) VMs on active cluster server, you have to failover the VM(s) to patch the active cluster server.

I also think the answer is D. If you have several vm's on your cluster of servers, you could have; for example, vm1 and vm2 connected to cluster server 1, vm3 connected to cluster server 2 and so on. It makes sense to Failover all VM's located on cluster server 1 to another cluster server prior to applying patches to that server. Just my thoughts.

I think the answer is D

According to compTIA, Active-Active provides high Availability and load Balancing Active-Passive provides only high Availability, so the HA cluster mentioned in the question can be Active-Active or Active-Passive, so C is not correct. Fallback = Role back = alternative which can be used if something goes wrong with the main plan and this is not making sense in this question, so B is not correct. I think the answer is D.

Secondary servers are already active and waiting to receive connections, so there is no downtime during failover scenario. The environment enjoys improved the processing capacity because two server nodes are actively running instead of one waiting Idly as it does in Active/Passive Clustering. Therefore you can remove a single instance from the cluster to patch the server and this would be transparent to the users. Failovers may not be. https://www.sanitysolutions.com/active-clustering-101/#

B reference comptia official server + SK0-005 The purpose behind server clusters is to provide high availability of services and data, scalability, and load balancing. Consider the following example: You have a web site hosting critical customer data. A BIA determined that if the website becomes unavailable, there will be severe consequences for the organization. As the sysadmin, you decide to create a two-node cluster of web servers. The two servers each host duplicate copies of the files that make up the web site. If one server fails, the other server is configured to automatically and immediately take over. Since both nodes share the same IP address, there is no interruption or reconfiguration necessary. Also, if you need to take the servers down for maintenance, you can do so one at a time, allowing the site to remain available during patching or upgrade procedures

I prefer option C