CS Cloud Computing & Services 2

Question 1

A startup wants to run code only when an HTTP request arrives, paying nothing while idle. Which cloud model best fits this need?

Accepted Answer

Serverless computing (FaaS)

Answer

Function as a Service executes code on demand and bills only for actual execution time.

Question 2

Which characteristic of cloud computing allows resources to be automatically scaled up or down based on demand?

Accepted Answer

Rapid elasticity

Answer

Rapid elasticity is the NIST characteristic describing automatic scaling to match workload demand.

Question 3

A company uses AWS for compute but keeps sensitive databases in its own data center, with workloads spanning both. What deployment model is this?

Accepted Answer

Hybrid cloud

Answer

A hybrid cloud combines private on-premises infrastructure with public cloud resources in a single architecture.

Question 4

In the shared responsibility model for IaaS, which task is the customer's responsibility rather than the cloud provider's?

Accepted Answer

Patching the guest operating system on virtual machines

Answer

In IaaS the provider secures hardware and hypervisor while the customer manages the guest OS and above.

Question 5

Which technology packages an application with its dependencies into a lightweight, portable unit sharing the host OS kernel?

Accepted Answer

Containers

Answer

Containers isolate applications while sharing the host kernel, making them lighter than full VMs.

(CS) Computer Science Practice Test