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what the CIO has requested?

In a corporation where compute utilization spikes several times a year, the Chief Information Officer (CIO) has
requested a cost-effective architecture to handle the variable capacity demand. Which of the following
characteristics BEST describes what the CIO has requested?

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A.
Elasticity

B.
Scalability

C.
High availability

D.
Redundancy

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7 Comments on “what the CIO has requested?

  1. JohnnyMac says:

    I think A is correct.

    Elasticity is defined as “the degree to which a system is able to adapt to workload changes by provisioning and de-provisioning resources in an autonomic manner, such that at each point in time the available resources match the current demand as closely as possible”




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  2. It’s A

    High availably means using redundancy in such a way as to ensure that
    certain levels of operational performance are balanced against risk

    Virtualization provides elasticity, meaning you can expand, duplicate, reconfigure,
    repurpose, and reuse resources in the environment (in this case, virtual hosts) on the fly,
    as the need for them arises or shrinks. This provides an organization flexibility in its use
    of resources, saving physical machines and reallocating, activating, and deactivating hosts
    as needed in dynamic-use situations. Virtual machines can be provisioned, configured,
    and stored in advance for just such instances.




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  3. Alexander says:

    I go with B.
    If your environment has temporary overloading during some periods of time you should think about Scalability. For example add more computing resources to maintain load (it is more appropriate for virtualization).

    There is nothing in question which refers to issues with Availability. The key phrase is “handle the variable capacity demand” and Scalability is definitely related with these requirements.




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    1. JohnnyMac says:

      I read this Alexander

      https://turbonomic.com/blog/on-technology/cloud-elasticity-vs-cloud-scalability/

      and it seems that although both are possible, because Elasticity deals more with intermittent ups and downs, I think A is the correct answer. Seems scalability is more designed for if your company expanded and needed to increase processing power more permanently. I wouldn’t be surprised if B was, but I’d put A if it was on my test.




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  4. meac says:

    It is A- Elasticity means that the system can deal with ups and downs and to conform accordingly. As already mentioned, Elasticity is defined as “the degree to which a system is able to adapt to workload changes by provisioning and de-provisioning resources in an autonomic manner, such that at each point in time the available resources match the current demand as closely as possible” B- Scalability Is not as flexible and can only move one way…upwards towards the possibility of provisioning more services per resources. We can scale up, but it is not common to scale down.




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