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CAS-003 · Question #4
CAS-003 Question #4: Real Exam Question with Answer & Explanation
The correct answer is C: Single-tenancy PaaS. Single-tenancy PaaS allows the organization to build and host a large database application using a dedicated cloud environment managed by a specialized vendor, reducing capital expenditure and datacenter reliance.
Question
A team is at the beginning stages of designing a new enterprise-wide application. The new application will have a large database and require a capital investment in hardware. The Chief Information Officer (IO) has directed the team to save money and reduce the reliance on the datacenter, and the vendor must specialize in hosting large databases in the cloud. Which of the following cloud-hosting options would BEST meet these needs?
Options
- AMulti-tenancy SaaS
- BHybrid IaaS
- CSingle-tenancy PaaS
- DCommunity IaaS
Explanation
Single-tenancy PaaS allows the organization to build and host a large database application using a dedicated cloud environment managed by a specialized vendor, reducing capital expenditure and datacenter reliance.
Common mistakes.
- A. SaaS delivers ready-made software applications and is inappropriate when the team is designing a custom enterprise application with its own large database.
- B. Hybrid IaaS still requires the organization to manage infrastructure components and does not fully reduce datacenter reliance or capital investment.
- D. Community IaaS is shared among organizations with common interests and does not imply vendor specialization in large databases, nor does it minimize datacenter reliance for a single enterprise.
Concept tested. Selecting appropriate cloud service model for large database hosting
Reference. https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-145.pdf
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