Question 21

Correct answer: D

A. Running an app for free in the cloud is not a typical scenario for choosing IaaS options. While IaaS can provide cost-effective solutions for running applications, running an app for free in the cloud usually involves using free tiers or services provided by cloud providers, which may not necessarily require the use of IaaS. Other cloud service models like PaaS or serverless computing may be more suitable for running apps for free in the cloud.

B. Choosing IaaS options in cloud computing to reduce administrative overhead is not the most common scenario. While IaaS does provide more control over the infrastructure compared to other cloud service models, it also requires more administrative effort for managing virtual machines, networking, and storage. Other cloud service models like PaaS or SaaS may be more suitable for reducing administrative overhead.

C. Brand new development projects typically have more flexibility in choosing cloud service models. While IaaS can still be an option for brand new development, other cloud service models like Platform as a Service (PaaS) or Software as a Service (SaaS) may offer more benefits in terms of scalability, cost-effectiveness, and reduced management overhead.

D. Choosing Infrastructure as a Service (IaaS) options in cloud computing is most likely in a lift-and-shift migration scenario. This involves migrating existing on-premises applications and workloads to the cloud without significant changes. IaaS provides virtualized computing resources such as virtual machines, storage, and networking, making it suitable for replicating existing infrastructure in the cloud.