Module 1 Flashcards
List the three primary benefits of cloud computing
Reduced Investment and Proportional Costs
Increased Scalability
Increased Availability and Reliability
Explain the resiliency charactestics 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 to another
due to a 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 diffciult to move to another cloud from a different cloud provider
List the four cloud deployment models.
“*public cloud
- community cloud
- private cloud
- hybrid cloud”
An organisation that is a cloud consumer has a cloud service consumer that accesses a cloud service 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.
When compared to an on–premise environment, an organisation will have ________________ governance and administrative control over IT resources leased from a cloud provider.
When compared to an on–premise environment, an organisation will have –reduced– governance and administrative control over IT resources leased from a cloud provider.
Explain the measured usage characteristic of cloud.
The ability of a cloud platform to keep track of the usage of its IT resources by cloud consumers.
Which cloud delivery model provides cloud consumers with the least amount of administrative control?
Software–as–a–Service (SaaS)
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 delivery model is primarily defined by the incorporation of the ready–made environment mechanism?
Platform–as–a–Service (PaaS)
Which cloud deployment model provides a cloud environment comprised of two or more different cloud deployment models?
Hybrid cloud
Explain how cloud computing enables organisations to become more scalable and responsive.
Usage of self–provisioned cloud–based IT resources us automated, requiring no further human involvement by the cloud consumer or cloud provider
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)
Which cloud deployment model represents a cloud owned by a single organisation?
Private cloud
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. Therefore, the costs are proportional to the usage.
List the six characteristics of a cloud.
“*on–demand usage
- ubiquitous access
- multitenancy
- elasticity
measured usage
resiliency (or resilient computing)”
Which cloud delivery model provides a self–contained IT environment comprised of infrastructure–centric IT resources?
Infrastructure–as–a–Service (IaaS)
Which cloud deployment model limits access to a specific group of cloud consumers?
Community cloud
Explain why cloud computing can 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.
Explain why there maybe be a cloud computing challenges pertaining to multi–regional issues.
Because clouds can hide underlying implementation details from cloud consumers, cloud consumers may not be aware of where their date and IT resources may be actually be geographically located. Depending on the nature of the cloud consumer’s business, there may be industry or government regulations and policies that impose specific legal requirements that pertain to the geographical location of data or IT resources.
List the three cloud delivery models.
”* Infrastructure–as–a–Service (IaaS)
- Platform–as–a–Service (PaaS)
- Software–as–a–Service (SaaS)”
Which cloud deployment model provides a publicly accessible cloud environment owned by a third–party cloud provider?
Public cloud
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”
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.
Which cloud delivery model generally provides cloud consumers with the greatest amount of administrative control?
Infrastructure–as–a–Service (IaaS)
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”
Explain the multitenancy 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 of which is isolated from the other.
“A cloud service can assume the role of cloud service consumer
(True/False)”
TRUE
Explain what is meant by the cost of capital” for an on–promise IT resource.”
The cost of capital represents the cost incurred by raising funds. For the purchase of an on–premise IT resource, the cost of capital can be high.
What are the two terms used to communicate an increase or decrease in resources when discussing horizontal scaling?
”* Scaling in
- Scaling out”
List three common types of cloud services.
”* Web service
- REST service
- virtual server
Other correct answers exist because any software program that can be made remotely accessible via a cloud can be considered a cloud service.”
What are the three primary quality–of–service characteristics covered by an SLA for a cloud service?
”* availability
- reliability
- performance”
The prior investment that has been made in an organisation’s on–premise IT resources is referred to as _________ costs.
“The prior investment that has been made in an organisation’s on–premise IT resources is referred to as
–sunk– costs.”
What are the two terms used to communicate an increase or decrease in resources when discussing vertical scaling?
”* scaling up
- scaling down”
What is the temporary runtime role assumed by a software program when it accesses a cloud service?
Cloud service consumer.
Which SLA measurement represents the capacity up to which an IT resource is able to perform is functions?
performance
When calculating the availability rating of a cloud service, you begin by dividing the amount of hours the cloud service was________________ (within a measured period) by the total amount of hours within the measured period. We then multiply this value by 100 and deduct the result from 100.
When calculating the availability rating of a cloud service, you begin by dividing the amount of hours the cloud service was –unavailable–(within a measured period) by the total amount of hours within the measured period. We then multiply this value by 100 and deduct the result from 100.
“Consumers of virtual IT resources maintain centralised administrative control over the underlying physical IT resource
(True/False)”
FALSE
What is the difference between a cloud consumer and a cloud service consumer?
”* A cloud consumer is an organisation or a human that uses a cloud service consumer to access a cloud service.
- A cloud service consumer is a temporary runtime role assumed by a software program when it accesses a cloud service.”
List four of the six types of cost metrics that can be collected and measured for cloud–based IT resources.
“Any four from:
- Up–front Costs
- On–going Costs
- Cost of Capital
- Sunk Costs
- Integration Costs
- Locked–in Costs”
A ____________________ is a distinct and remote IT environment designed for the purpose of remotely provisioning scalable and measured IT resources.
A –cloud– is a distinct and remote IT environment designed for the purpose of remotely provisioning scalable and measured IT resources.
“For a remote environment to be considered a cloud, it must provides its IT resources using virtualisation technology.
(True/False)”
FALSE
What is an organisation boundary?
An organisation boundary represents the physical perimeter (or boundary) that surrounds a set of IT resources owned by a specific organisation.
Which SLA measurement is represented by the amount of time that an IT resource is accessible during given period?
availability
The funds required to carry out integration testing are referred to as ____________________.
The funds required to carry out integration testing are referred to as –integration costs–.
________________ scaling refers to the allocation or releasing of resources of the same type, whereas ________________ scaling occurs when an existing resource is replaced by another.
–Horizontal– scaling refers to the allocation or releasing of resources of the same type, whereas –vertical–scaling occurs when an existing resource is replaced by another.
List three common types of cloud service consumer.
“Any three from:
- Software program
- Service
- Cloud service
- Any hardware device (workstation, laptop, mobile, device) running software capable of remotely accessing a cloud service.”
Which SLA measurement represents the probability that an IT resource will continue to perform its intended functions without failure under pre–defined conditions?
reliability
The cloud computing challenge of Limited Portability Between Cloud Providers” is most relevant to which cost metric?”
locked–in costs
Multiple images of a single physical IT resources are provided so that the underlying processing capabilities of the physical IT resource can be shared individually by multiple consumers. This is an example of what form of technology?
virtualization
A software program that resides within a cloud accesses a cloud service that resides in a different cloud. What temporary runtime role did the software program assume?
cloud service consumer
“_____________ costs for leasing cloud–based IT resources tend to be lower, whereas _____________ costs for the initial purchase of on–premise IT resources tend to be higher
Note: A single term is the same answer for both blank fields.”
–Up–front– costs for leasing cloud–based IT resources tend to be lower, whereas –up–front– costs for the initial purchase of on–premise IT resources tend to be higher.
“For an environment to be considered a cloud, it must be remotely accessible via Web–based protocols and technologies.
(True/False)”
FALSE
A ________________ provides the technology used to establish an operational layer between physical and virtual IT resources.
A –virtualization environment– provides the technology used to establish an operational layer between physical and virtual IT resources.
An organisation that is a cloud consumer has a contractual relationship with an organisation that is a cloud provider. How many organisational boundaries exist.
Two. The cloud consumer and the cloud provider each have their own organisational boundary.
“On–going costs for the operation of cloud–based IT resources can exceed the on–going costs of on–premise IT resources.
(True/False)”
TRUE
List three common cloud–based IT resources.
“Any three from:
- physical server
- virtual servers
- software program
- storage device
- network device
- cloud service (or service)
Note that not every IT resource that resides inside a cloud needs to be made directly available to consumers. A cloud–based IT resource can be remotely accessed or it can support the remote access of other cloud–based IT resources. Therefore, other types of cloud–based IT resources can also exist.”
Within cloud computing, any _____________ IT resource is classified as a service.
Within cloud computing, any –remotely accessible– IT resource is classified as a service.
What is a trust boundary?
A trust boundary is a logical perimeter wherein IT resources are trusted from a security perspective.
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)
