Overview of Cloud Computing

Question 1

What separates virtual machines logically, assigning each its own slice of underlying computing power, memory and storage, thus preventing the virtual machines from interfering with each other?

Answer 1

Hypervisor

A hypervisor separates virtual machines logically, assigning each its own slice of underlying computing power, memory and storage, thus preventing the virtual machines from interfering with each other.

Question 2

How does the National Institute of Standards and Technology (NIST) define cloud computing?

Answer 2

A model for enabling convenient, on-demand network access to a shared pool of compute resources.

NIST defines cloud computing as a model for enabling convenient, on-demand network access to a shared pool of compute resources.

Question 3

What is considered a perceived risk of cloud computing?

Answer 3

Data security

Data security is considered a perceived risk of cloud computing.

Question 4

Which type of computing environment connects an organization’s on-premises private cloud and a third-party public cloud into a single flexible infrastructure for running applications and workloads?

Answer 4

Hybrid

A hybrid cloud is a computing environment that connects an organization’s on-premises private cloud and third-party public cloud into a single flexible infrastructure for running applications and workloads.

Question 5

Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS) are generally known as what?

Answer 5

Service models

IaaS, PaaS and SaaS are generally known as the service models.

Question 6

What is another term used for the utility billing method?

Answer 6

Pay-as-you-go

Pay-as-you-go is another term used for the utility billing method.

Question 7

Access to infrastructure and physical computing resources such as servers, networking, storage, and data center space best describes what?

Answer 7

Infrastructure as a Service (IaaS)

Infrastructure as a Service (IaaS) is described as access to infrastructure and physical computing resources such as servers, networking, storage, and data centers.

Question 8

Which cloud service provider specializes in Software-as-a-Service (SaaS) focused on customer relationship management?

Answer 8

Salesforce

Salesforce is the cloud service provider that specializes in Software-as-a Service (SaaS) focused on customer relationship management.

Question 9

In which decade did the practice of time sharing or resource pooling evolve to make more efficient use of computing power via the mainframe?

Answer 9

1950s

During the 1950s the practice of time sharing or resource pooling evolved to make more efficient use of computing power via the mainframe.

Question 10

On demand self-service, broad network access, resource pooling, rapid elasticity, and measured services are known as what?

Answer 10

Five essential characteristics of the cloud according to NIST.

According to NIST, on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured services are considered the five essential characteristics of the cloud.