Select the technical requirements below that are best satisfied by a Function As A Service (FaaS) cloud service.

Question

BlackTom AI · Accepted Answer

When evaluating cloud service models for specific technical requirements, it helps to map the needs to what each model specializes in.
Option 1 describes deploying a Python web application with control over code and libraries and using a patched Python version. This aligns more with a Platform as a Service (PaaS) or even an IaaS approach where you manage the runtime and dependencies, rather than a Function as a Service (FaaS). FaaS abstracts away the server and runtime management, but it typically limits you to event-driven, stateless functions rather than full long-running web apps with full control over the stack.
Option 2 mentions a legacy application needing a specific non-standard Linux kernel configuration and access to the raw filesystem. Such low-level, kernel-bound, and filesystem-privileged requirements are not compatible with FaaS, which runs in managed environments with restricted, abstracted kernels and ephemeral storage. This is the opposite of what FaaS offers or supports.
Option 3 requires continuous background execution for an hour or more. FaaS is designed around short-lived, stateless functions that respond to events and scale down to zero when idle. Long-running background processes are not a good fit for typical FaaS, which would complicate scaling, state management, and cost efficiency for sustained workloads.
Option 4 specifies a script that triggers automatically on an event (image upload) and the infrastructure can scale to zero when there’s no activity. This perfectly matches the characteristic strengths of FaaS: event-driven execution, automatic scaling, and pay-per-use with zero consumption when idle. It leverages the function-as-a-service model to run small, discrete tasks in response to events without managing servers.
Thus, Option 4 is the one that best satisfies the described FaaS-oriented requirements, while the other options illustrate scenarios where other cloud service models (like IaaS or PaaS) would be more suitable due to control, kernel or long-running process needs.

Select the technical requirements below that are best satisfied by a Function As A Service (FaaS) cloud service. 单项选择题

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