C90.01A: Fundamental Cloud Computing Flashcards
Which cloud delivery model provides a pre-defined IT environment with already deployed and configured IT resources suitable for the development and deployment of applications?
Platform-as-a-Service (Paas)
Explain how organisations can use cloud computing to increase the availability and reliability of their solutions.
Cloud providers generally offer resilient IT resources for which they are able to guarantee high levels of availability. Cloud environments can provide extensive failover support to increase reliability.
Explain the ubiquitous access characteristic of a cloud.
The IT resources offered by the cloud are widely accessible.
Which cloud deployment model provides a cloud environment comprised of two or more different cloud deployment models.
Hybrid cloud
Which cloud delivery model is primarily defined by the incorporation of the ready-made environment mechanism?
Platform-as-a-Service (Paas)
Which cloud deployment model represents a cloud owned by a single organisation?
Private cloud
Explain the multi-tenancy characteristic of a cloud.
The cloud enables an instance of an IT resource (that exists as a software program) to serve different cloud service consumers, each o which is isolated from the other.
List three of the four common cloud computing challenges
Any three from:
- Increased Security Vulnerabilities
- Reduced Operational Governance Control
- Limited Portability Between Cloud Providers
- Multi-Regional Compliance and Legal Issues
Which cloud delivery model generally represents a product that exists as a shared cloud service offered by a cloud provider to cloud consumers?
Software-as-a-Service (SaaS)
The cloud computing challenge of Increased Security Vulnerabilities is based on two main security-related problems. What are they?
- Compatibility of Cloud consumer and Cloud provider security technologies
- Overlapping Trust Boundaries from different cloud consumers within the same cloud
Which cloud delivery model generally provides consumers with the greatest amount of administrative control?
Infrastructure-as-a-Servicces (IaaS)
Explain the elasticity characteristic of a cloud.
The ability of a cloud to enable cloud consumers to scale cloud-based IT resources out or in, as required.
Explain how cloud computing enables organizations to become more scalable and responsive.
IT resources can be flexibly acquired from a cloud provider. Almost instantaneously and at a wide variety of usage levels. By scaling with cloud IT resources, cloud consumers can leverage this flexibility to increase their responsiveness to foreseen changes and unforeseen changes. This holds true for when an clud consumer needs to scaleIT resources based on current requirements.
Explain the on-demand usage characteristic of a cloud.
Usage of self-provisioned cloud-based IT resources is automated, requiring no further human involvement by the cloud consumer or cloud provider.
Which deployment model limits access to a specific group of cloud consumers?
Community cloud.
Which cloud deployment model provides a publicly accessible cloud environment owned by a third-party cloud provider?
Public cloud.
List the six characteristics of a cloud
- Resiliency
- On-demand usage
- Ubiquitous access
- Multi-tenancy
- Elasticity
- Measured usage
(ROUMEM)
Which cloud delivery model provides a self-contained IT environment comprised of infrastructure-centric IT resources?
Infrastructure-as-a-Service (Iaas)
List the three cloud delivery model.
- Infrastructure-as-a-Service (Iaas)
- Platform-as-a-Service (PaaS)
- Software-as-a-Service (SaaS)
Explain how cloud computing allows organisations to fund the scaling of IT resources with proportional costs.
Organisations can lease IT resources from cloud providers using a pay-for-use model that only charges them for the amount that the IT resources are actually used. Therefor, the costs are proportional to the usage.
Explain why there may be cloud computing challenges pertaining to multi-regional issues.
Because cloud can hide underlying implementation details from cloud consumers, cloud consumers may not be aware of where their data and IT resources actually be geographically located. Depending on the nature of the cloud consumer business, there may be industry or government regulations and policies that impose specific legal requirements that pertain to the geographical location od data or IT resources.
Explain why cloud computing reduce up-front IT investment requirements for organisations.
Instead of having to purchase required IT resources, organisations can lease them from a cloud provider. This reduces the up-front investment required.
Which cloud delivery model provides cloud consumers with the least amount of administrative control?
Software-as-a-Service (SaaS)
List the four cloud deployment models
- Private cloud
- Public cloud
- Community cloud
- Hybrid cloud
Explain the resiliency characteristic of a cloud
A form of failover that distributes redundant implementations of IT resources across physical locations.
Explain why it can be challenging for a cloud consumer to move from one cloud provider to another
Due to a general lack of industry standardisation, different cloud providers can impose proprietary requirements. Cloud consumers that form dependencies on proprietary characteristics of a cloud owned by one cloud provider may find it difficult to move to an other cloud from a different cloud provider
List the three primary benefits of cloud computing.
- Increased Scalability
- Reduced Investment and Proportional Costs
- Increased Availability and Reliability
(IRI)
Explain the measured usage characteristic of a cloud
The ability of a cloud platform to keep track of the usage of its IT resources by cloud consumers.
When compared to an on-premise environment, an organisation wil have ____________ governance and administrative control over IT resources leased from a cloud provider.
Reduced
An organisation that is a cloud consumer has cloud service consumer that accesses a cloud service provided by a cloud owned by an organisation that is a cloud provider. What is the minimum number of trust boundaries that need to exist?
One.
A single trust boundary can span the two organisation boundaries of the cloud consumer and the cloud provider.
The Limited Portability Between Cloud Providers challenge of cloud computing can occur when anabsence of industry standards (or an absence of compliance to industry standards) requires that cloud consumers build cloud-based solutions to conform to proprietary requirements imposed by cloud providers. This makes it more difficult to move to new cloud providers in the future.
Select the correct answer.
A. True
B. False
A. True
Measured usage is only limited to tracking statistics for billing purposes. It does not encompass the general monitoring of IT resources and related usage reporting. Therefore, measured usage isonly relevant to clouds that charge for usage.
Select the correct answer.
A. True
B. False
B. False
Service agents are provided only by runtime environments and operating systems.
As a result, service agents cannot be custom developed.
Select the correct answer.
A. True
B. False
B. False
A(n) ____________________ cloud is a cloud environment owned by a third-party cloud provider and accessible to external cloud consumers.
The IT resources in the cloud are generally offered to cloud consumers at a cost.
Select the correct answer.
A. Public
B. On-premise
C. Private
D. None of the above.
A. Public
Which of the following are common types of cloud service consumers?
Select ALL THAT APPLY
A. Software programs capable of remotely accessing cloud services with published servicecontracts.
B. Services capable of remotely accessing cloud services with published service contracts.
C. Humans that use workstations running software capable of remotely accessing IT resources positioned as cloud services.
D. Mobile devices running software capable of remotely accessing IT resources positioned ascloud services.
A, B, C
Which of the following types of cost metrics make it more difficult to justify the leasing of cloud based IT resources as an alternative to purchasing on-premise IT resources?
SELECT ALL THAT APPLY
A. Cost of capital
B. Sunk costs
C. Integration costs
D. Locked-in costs
B, C, D
Which of the following combinations of cloud delivery models are possible?
Select the correct answer.
A. IaaS + PaaS
B. IaaS + SaaS
C. IaaS + PaaS + SaaS
D. All of the above.
D. All of the above.
Which of the following scenarios describes the Reduced Investment and Proportional Costs benefit of cloud computing?
Select the correct answer.
A. A cloud consumer pays a usage fee for only the amount of the IT resources actually used. This gives the cloud consumer organisation access to IT resources without having to purchase its own.
B. A cloud consumer pays the expenses associated with the cost of capital in order to fund the upfront costs for the cloud provider IT resources used. This gives the cloud consumer organisation the option to budget required up-front costs before committing to IT resource usage.
C. A cloud consumer avoids payment of up-front costs and usage fees for cloud provider IT resources it uses by following the cost of capital model. This allows the cloud consumer organisation to obtain access to IT resources with “no money down”. This gives the cloud consumer organisation the ability to begin working with cloud-based IT resources with no immediate funds, but then subjects the organisation to increased costs later when high-interest rates begin to apply after a pre-defined period.
D. None of the above.
A.
Cloud consumers that use cloud-based IT resources can generally lease them with a___________________ model so that cloud consumers pay a usage fee for only the amount ofthe IT resources actually used, resulting in directly proportional costs.
Select the correct answer.
A. Up-front fee
B. Pay-for-use
C. Amortisation
D. None of the above.
B. Pay-for-use
Which of the following cloud delivery models provides the least amount of administrative control for cloud consumers?
Select the correct answer.
A. Software-as-a-Service (SaaS)
B. Platform-as-a-Service (PaaS)
C. Infrastructure-as-a-Service (IaaS)
D. The listed cloud delivery models provide the same level of administrative control for cloud consumers.
A. Software-as-a-Service (SaaS)
Which of the following characteristics of a software program enables an instance of the program to serve different consumers, with each of these consumers isolated from one another?
Select the correct answer.
A. Multi-user
B. Multi-tenancy
C. Multi-device broker
D. Elasticity
B. Multi-tenancy
Which of the following types of organisations can assume the role of cloud resource administrator for a cloud service?
Select ALL THAT APPLY
A. A cloud consumer organisation that owns the cloud service.
B. A cloud provider organisation that owns the cloud service.
C. A third-party organisation contracted by the cloud consumer to administer the cloud service.
D. A third-party organisation contracted by the cloud provider to administer the cloud service.
A, B, C, D
Which of the following statements accurately describes the level of administrative control a cloud provider has over an environment (residing in the cloud provider’s cloud platform) based on the Infrastructure-as-a-Service (IaaS) delivery model?
Select the correct answer.
A. Full administrative control over physical hardware, physical network, storage devices, and virtualization platforms.
B. Full administrative control over physical hardware and physical network, and limited administrative control over storage devices, virtualization platforms, virtual servers and databases.
C. Full administrative control over physical hardware, physical network, storage devices, virtualization platforms and virtual servers, and limited administrative control over databases and service implementations.
D. The cloud provider has no administrative control in this scenario.
A. Full administrative control over physical hardware, physical network, storage devices, and virtualization platforms.
Private clouds can effectively extend on-premise infrastructure to IT resources that are physically isolated in the private cloud environment and remotely accessed via a virtual private network.
Select the correct answer.
A. True
B. False
A. True
Which of the following are common benefits of cloud computing?
Select the correct answer.
A. Reduced Investment and Proportional Costs
B. Increased Scalability
C. Increased Availability and Reliability
D. All of the above.
D. All of the above.
A ___________________ is a distinct and remote IT environment designed for the purpose of remotely provisioning scalable and measured IT resources.
Select the correct answer.
A. Public cloud
B. Private cloud
C. Community cloud
D. All of the above.
D. All of the above.
A service must be Web-based for it to be considered a cloud service.
Select the correct answer.
A. True
B. False
B. False
A(n) ____________________ cloud is owned by a single organization. It enables an organisation to use cloud computing technology as a means of centralizing access to IT resources by different parts of the organisation.
Select the correct answer.
A. Public
B. On-premise
C. Private
D. None of the above.
C. Private
Which of the following represents the cost incurred to raise required funds for new IT resource acquisitions?
Select the correct answer.
A. On-going costs
B. Cost of capital
C. Sunk costs
D. Locked-in costs
B. Cost of capital
Over the past two years a cloud service consumers have made 123,456 attempts to invoke a cloud service. Of those attempts, 122,987 resulted in the successful execution of the cloud service. Based on these statistics, the reliability rating of the cloud service is__________________ (rounded to one decimal).
Select the correct answer.
A. 94.6%
B. 97.0%
C. 98.0%
D. 99.6%
D. 99.6%
122,987 / 123,456 = 0,9962 * 100 = 99,6 %
