SCT Cloud Computing & Virtualization 5

Question 1

Which cloud service model gives a customer virtual machines, storage, and networks while the customer manages the operating systems?

Accepted Answer

IaaS

Answer

IaaS provides virtualized infrastructure, and the customer manages the OS and everything above it.

Question 2

Serverless computing (Function as a Service) is best described as:

Accepted Answer

Running code in response to events while the provider manages all servers and scaling

Answer

Servers still exist in serverless computing, but the provider fully manages them and bills per execution.

Question 3

A business keeps an identical copy of its systems in a second geographic cloud region in case the main region fails. This is mainly a strategy for:

Accepted Answer

Disaster recovery and business continuity

Answer

Replicating to another region lets services keep running or recover quickly after a regional outage.

Question 4

Which component lets multiple virtual machines on the same host communicate with each other as if they were plugged into a physical switch?

Accepted Answer

Virtual switch (vSwitch)

Answer

A virtual switch handles network traffic between VMs inside the hypervisor.

Question 5

What is 'vendor lock-in' in cloud computing?

Accepted Answer

Dependence on one provider's proprietary services that makes switching costly or difficult

Answer

Proprietary APIs and data formats can make it expensive to move to a different provider.

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