Week 7 - Intro to cloud Flashcards

1
Q

cloud computing is a computing model

A

1) allow users to access a shared pool of resources across the network,
2) resource can be rapidly provisioned and released without involving a lot of human effort.

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2
Q

What is On-Demand Self-Service

A

Unilaterally provision computing capabilities

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3
Q

What is Broad network access

A

cloud computing are provided through the network

As long as you have network access you can use your cloud services

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4
Q

Phones and tablets they’re called thin clients

because

A

Because we have a much thinner software stack in those kind of devices and the traditional laptops and
workstations they’re considered as thick platforms
because their software stacks are much thicker.

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5
Q

Resource Pooling

A

Resource consolidation

his is in mainly from the user’s provider perspective.
It says that the providers computing resources are pulled together to
service the consumer, the cloud users.

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6
Q

multi-tenant model

A

A multi-tenant model just like when landlord rent out an apartment to multiple tenants.

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7
Q

What exactly does location independence/ transparency

A

Cloud and runs his or her application,

the user generally does not have a location where his or her applications is really running

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8
Q

rapid elasticity

A

Resource can scale out and it can scale in as needed

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9
Q

Five key essential characteristics that define cloud computing

A

1) managed services
2) rapid elasticity
3) Resource pooling
4) On-demand self-service
5) product access

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10
Q

Why are smartphones and tablets called “thin clients”?

1) They have less software than computers.
2) They have less hardware than computers.
3) They are physically thinner than computers.
4) They are more mobile than computers.

A

1) They have less software than computers.

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11
Q

What does “location transparency” refer to in cloud computing?

1) Customers do not know the exact location of cloud servers.
2) Customers know the exact location of cloud servers.
3) Customers can control the location of cloud servers.
4) Customers can control how their content is distributed on cloud servers.

A

1) Customers do not know the exact location of cloud servers.

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12
Q

Which of the following cannot be considered a resource in cloud computing?

1) Query
2) Storage
3) Processing
4) Network bandwidth

A

1) Query

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13
Q

Three service models of Cloud companies

A

1) Infrastructure as a Service (IaaS)
2) Platform as a Service (PaaS)
3) Software as a Service (SaaS)

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14
Q

Infrastructure as a Service (IaaS) is

A

The user is able to run any arbitrary software on this on the cloud. Looks like everything is local, but it isn’t.

Users don’t have control over the hardware, just the software stack

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15
Q

Platform as a Service (PaaS)

A

1) Programming platform
2) Place to deploy some working application
3) Specific language and libraries

No control of OS
Google App Engine (GAE)
Autoscaling

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16
Q

Software as a Service (SaaS)

A

Software hosted on a web platform. Just an Application, Gmail, salesforce, web-server

Can be accessed from API

17
Q

Example of IAAS

A

AWS EC2

Google Compute Engine

18
Q

Examples of PaaS

A

Google App Engine

Heroku

19
Q

Examples of SaaS

A

Google Apps

Workday

20
Q

Examples of Database as a Service

A

AWS SimpleDB

Azure SQL

21
Q

Examples of Big Data as a Service

A

AWS Elastic MapReduce

22
Q

Examples of Bare-metal as a service

A

SoftLayer

23
Q

Public Cloud

A

Public use, but completely under the control of the cloud provider

24
Q

Private Cloud

A

Controlled and used by a specific organization

Either on-premise of the organization or off-premise

25
Q

Hybrid cloud

A

Part of it is public and part of it is private.

But these different components are well integrated.

26
Q

EC2

A

Elastic Cloud Computing

27
Q

ESB

A

Elastic Block Storage

28
Q

S3

A

Simple Storage Service

29
Q

SQS

A

Simple Queue Service (can be used a buffer and a a queue)

30
Q

SNS

A

Simple Notification Service

31
Q

Can users create their own AMI images

A

Yes

32
Q

How do you make a VM host image persist after termination?

A

Snapshot

33
Q

Is the instance storage permanent

A

No, it is temporary and only exists for the lifetime of the instances

34
Q

Is EBS persist?

3 items

A

Yes, it is independent from the instances

1) Replicated
2) can be attached to different instances
3) EBS can be attached to multiple instances

35
Q

What type of storage is dedicated for use for instances

A

EBS

36
Q

What is object store?

A

You can store any format of data. Any type of data

37
Q

How big can an SQS be

A

256 kilobytes

38
Q

Can a true cloud application be in-elastic

A

No has to be elastic

39
Q

What does IAM stand for

A

Identity & Access Management