Discuss Cisco 500-430 Exam Topic 3 Question 21

Why would a load balancer be deployed in production for a single-node events cluster?

Ato use the embedded Events Service along with the single-node cluster

Bto hide the events server's real name

Cto allow for deployment growth in the events cluster

Dto provide redundancy for the single-node

Suggested Answer: B

The Events Service is the on-premises data storage facility for unstructured data generated by Application Analytics, Database Visibility, and End User Monitoring deployments. The Events Service can be deployed as a single node or a cluster of three or more nodes, depending on the data volume and availability requirements. The Controller and other Events Service clients connect to the Events Service to store and retrieve analytics data. Therefore, it is essential that the Controller is able to initiate communication with the Events Service cluster, using the Events Service API ports (default 9080/2081). The Events Service cluster does not need to initiate communication with the Controller, as it only responds to the requests from the clients. The Events Service API ports can be reconfigured from the default values, if needed, by modifying theconf/events-service-api-store.propertiesfile on each node. However, the clients must also be updated with the new port values. It is also recommended to use a load balancer or a virtual IP address in front of the Events Service cluster, to provide a single endpoint for the clients and to enable load balancing and failover among the nodes.Reference:Events Service Deployment,Install the Events Service on Linux, andInstall the Events Service on Windowsin the AppDynamics documentation.

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32 comments · newest first

Delila 11 months ago

Wait, why would you need a load balancer for just one node?

Elouise 11 months ago

Totally agree with C! Growth is key.

Fletcher 11 months ago

A is interesting, but not sure it’s the best reason.

Mignon 11 months ago

I think D is a bit overkill for a single-node setup.

Temeka 12 months ago

C makes sense for future scaling.

Sophia 12 months ago

Providing redundancy seems like a good reason, but with a single-node setup, I'm not sure how effective that would be. Could it really provide redundancy?

Marilynn 1 year ago

Hiding the server's real name sounds familiar, but I can't quite recall if that's a primary reason for using a load balancer.

Maynard 1 year ago

I think we had a practice question about scaling clusters, and I recall that load balancers can help with future growth. So maybe option C makes sense?

Thora 1 year ago

I remember discussing load balancers in class, but I'm not sure why one would be needed for just a single-node cluster.

Kiley 1 year ago

Ah, I see. The load balancer could also provide some redundancy and failover capabilities for the single-node cluster, in case that node goes down.

Tamra 1 year ago

Hmm, I'm a bit confused. Wouldn't a load balancer be unnecessary for a single-node cluster? I'll have to re-read the question carefully.

Dannie 1 year ago

This question seems a bit tricky. I'll need to think through the use case for a load balancer in a single-node events cluster.

Rebbeca 1 year ago

Okay, I think I've got it. The load balancer could be used to allow for future growth and scaling of the events cluster, even though it starts with a single node.

Simona 1 year ago

Okay, let me break this down. Back-grounding involves investigating the applicant's history, while reporting is more about documenting findings. I think A is the best answer here, but I'll double-check my notes just to be sure.

Kaitlyn 1 year ago

I'm going with option C. Gotta plan for growth, even in a small cluster. The load balancer will make scaling up a breeze.

Rutha 1 year ago

↳ replying to Kaitlyn

It's always better to be prepared for growth, even if it's just a single-node cluster.

Francine 1 year ago

↳ replying to Kaitlyn

I agree, having a load balancer in place will definitely make scaling up easier in the future.

Vincent 1 year ago

↳ replying to Kaitlyn

Option C sounds like a good choice. Planning for growth is always important, even in a small cluster.

Filiberto 1 year ago

Ha! Using a load balancer for redundancy on a single-node cluster (option D)? That's like putting a spare tire on a unicycle.

Deeann 2 years ago

Hiding the server's real name with a load balancer (option B) seems like an odd choice. That's not a typical use case for a load balancer.

Audria 1 year ago

↳ replying to Deeann

D) to provide redundancy for the single-node

Oliva 1 year ago

↳ replying to Deeann

C) to allow for deployment growth in the events cluster

Deeann 1 year ago

↳ replying to Deeann

A) to use the embedded Events Service along with the single-node cluster

Verona 2 years ago

I disagree with option A. The embedded Events Service is not relevant in a single-node cluster scenario.

Jacquline 2 years ago

Option C seems the most reasonable choice. A load balancer would allow for future expansion of the events cluster, which is important for a production environment.

Catherin 1 year ago

↳ replying to Jacquline

Having redundancy is always a good idea for production environments.

Leonida 1 year ago

↳ replying to Jacquline

D) to provide redundancy for the single-node

Veda 1 year ago

↳ replying to Jacquline

That makes sense, we want to be able to scale up if needed.

Tanesha 1 year ago

↳ replying to Jacquline

C) to allow for deployment growth in the events cluster

Sheron 2 years ago

But wouldn't it also allow for deployment growth in the events cluster?

Jade 2 years ago

I agree with Sherron, having redundancy is important in case the single-node fails.

Sherron 2 years ago

I think a load balancer would be deployed to provide redundancy for the single-node.

Cisco 500-430 Exam - Topic 3 Question 21 Discussion