Exam AZ-900 topic 1 question 90 discussion

Horizontal scaling (Scaling in and Scaling out ) is flexible in a cloud situation as it allows you to run a large number of VMs to handle load. Vertical scaling (Scaling up and Scaling down) keeps the number of resources constant, but gives those resources more capacity in terms of memory, CPU speed, disk space and network.

Vertical is correct, thanks for the explanation!

vertical vs horizontal : https://learn.microsoft.com/en-us/azure/azure-sql/database/elastic-scale-introduction?view=azuresql

Vertical scaling: adding more resources Horizontal scaling: adding more servers

The answers is indeed B: VERTICAL SCALING * Scalability is the system's ability to scale (allocate/deallocate) resources. * Agility is the ability to scale quickly. If that scaling is happening AUTOMATICALLY, then we are talking about Elasticity. * Elasticity is the ability to quickly expand or decrease computer processing, memory, and storage resources to meet changing demands without worrying about capacity planning and engineering for peak usage. It is typically AUTOMATED so it doesn't have to rely on human administrators around the clock, and offers continuous availability of services by avoiding unnecessary slowdowns or service interruptions. With that out of the way * The term that represents the ability to increase the computing capacity of a virtual machine by adding memory or CPUs is VERTICAL SCALING. Vertical scaling, also known as scaling up, involves increasing the resources (such as memory or CPUs) of a single virtual machine to enhance its performance and capabilities IN SHORT: Horizontal scaling refers to adding additional nodes, vertical scaling describes adding more power to your current machines

Vertical scaling

This showed up today. Had 36 questions and scored an 857, and the community and questions here were all covered on the test!

vertical scaling is correct because look at the question it says increase CPU and memory of virtual machine (like for a single resource) vertical scaling = increasing capabilities of a single resource. horizontal scaling = increasing number of resources for deployment.

Guys, Read the question .... The question is asking you 'WHICH TERM' that indicates a single word. In reality A & B would both be correct, However this question is one of those nasty red herrings designed to throw you off & i feel have no place in an exam like this. it should be all about getting one over the line, not deliberately trying to cause people to fail just to increase revenue from retakes etc. Trust me , the answer here is A (AGILITY) What is an example of term? A term is a word or expression used with a particular meaning. "Rap," "punk," "grunge," and "heavy metal" are terms that describe particular styles of music. "Sweetie" is a term of endearment, at least to most people.

elasticity had also refered the same meaning, how is elasticity different from Vertical scaling?

Agility is correct

Its bit confusing!!! Elastic expenditure model(elasticity): Increase memory and storage (etc.) of a VM as the workload increases and reduces accordingly. So how is elasticity different from Vertical scaling?

Horizontal is adding machines, vertical is adding resources to machines.