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Cloud > Cloud module 1 > Flashcards

Cloud module 1 Flashcards

1
Q

NIST Defintion

A

A model for enabling convient

On demand Network access to a shared pool of configurable computing resources

that is rapidly provisioned

Released with min management effort or service provider interaction

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2
Q

5 Characteristics

A
  1. On demand self service
  2. Broad Network Access
  3. Resource Pooling
  4. Rapid Elasticity
  5. Measured Service
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3
Q

Infrastructure

A

physical hardware

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4
Q

Virtualisation

A

Enable through hypervisors - different types

sharing hosting services - visual private servers and dedicated servers

Utility model - PAYG

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5
Q

Hypervisors

A

Small software layer that enables multiple OS to run alongside each other

share the same physical computing

separates VMs logically assigning each with its own slice of the underlying computing - storage

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6
Q

Benefits of cloud adoption

A

Flexibilty - scale whenever they want to

Security -virtual private clouds, encryption & API Keys

Efficiency - Enterprise users can get application to market without worrying about underlying infrastructure costs or its maintenance.

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7
Q

Challenges of cloud adoption

A

data security

Governance issues

legal, regulatory and compliance issues

lack of standardisation in how the

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8
Q

Salesforce

A

Saas & CRM system - specialises

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9
Q

SAP

A

Enterprise software applications

ERP

CRM

HR

FINANCE

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10
Q

How does NIST define cloud computing?

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

B. A model for delivering a dedicated pool of computing resources on-premise

c. The capability to provide dedicated network access that can be provisioned in batch mode.
d. On-demand non configurable computer resources that can be rapidly provisioned

A

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

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11
Q

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

A. 19050

B. 1960

C. 1970

D. 1980

A

A. 19050

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12
Q

Cloud adoption

A
  • 74 % adopted cloud to improve customer experience
  • 71% use cloud to create enhanced products and services while downsizing legacy systems and reducing costs
  • Remain competitive, business need to…
    - be able to respond quickly to changes
    - use analytics to understand customer experience
    - apply that understanding to adapt their products and services based on what they learn
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13
Q

Smart Assistants

A

Learn a user’s preference over time

Over time will learn to anticipate and give insights

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14
Q

Blockchain

A

A secure, immutable network that allows members to view only the transactions that are relevant to them

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15
Q

Which of the following provided the foundation for the transformation to the cloud?

A. the power, scalability, flexibility and pay-as-you-go economics.

B. The need to provide compute resources for complex problems

C. Faster go-to-market strategies were needed by organisations

D. Enablement for growth, agility and innovation

A

A. the power, scalability, flexibility and pay-as-you-go economics.

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16
Q

According to an ibm study how many business are taking this.

A. 35%
B. 65%
C. 75%
D. 85%

A

C. 75%

17
Q

Cloud Storage

A
  • data is saved in the cloud
  • cloud providers host, secure & manage maintain cloud storage and associated infrastructure
  • Cloud storage services allow you to scale capacity as you need so you only pay for what you use “mostly on per GB” basis

Faster read/write speed, higher per GB cost

18
Q

4 types of storage

A
  • Direct Attached
  • File Storage
  • Block Storage
  • Object Storage
19
Q

Direct Attached

A
  • local storage
  • within same server or rack
  • fast
  • use for OS
  • Ephemeral (temporary)
  • Not Shared-dedicated to a singer host
  • Not resilient
20
Q

File Storage

A
  • Slower
  • Low cost
  • Attach to multiple servers
  • Simple approach to data storage
  • Can be mounted on multiple servers at once
  • must be attached to a file NFS
  • works well if it doesn’t require fast network
21
Q

Block Storage

A
  • Presented to compute nodes using high speed fibre connections
  • Faster read/write
  • Databases
  • Volumes
  • IOPS - the higher the IOPS the faster the storage
  • Snapshot
  • suitable for databases where disk space is important - block storage is the best one.
22
Q

Object Storage

A
  • Accessed via API not attached to compute node
  • Slowest
  • Cheapest
  • infinite in size
  • Pay for what is used
  • Unstructured data types - not stored in hierarchal data
  • disadvantage -poor performance when data needs to be shared, not suitable for OS or where content is constantly changing
23
Q

File Storage

A
  • attached to a compute node to store data
  • more resilient to failure
  • less disk management and maintenance
24
Q

Block storage

A

Block storage is only mounted to one compute node at a time

25
Q

Object storage has 3 tiers

  • Standard Tier
  • Vault/Archive Tier
  • Cold Vault Tier
  • Automatic Arch rules
A
  • Standard Tier
    - store objects that are frequently accessed
    - Highest per GB cost
  • Vault/Archive Tier
    - store objects that are accessed once or twice
    - low storage coast
  • Cold Vault Tier
    • store for a year or two
  • Automatic archiving rules
    • automatically be moved to a cheaper storage tier if it isn’t accessed for a while
26
Q

What is Content Delivery Network (CDN)

A

A distributed server network that delivers temporarily stored or cached, copies of website content to users, based on the user’s geographical location

27
Q

CDN benefits

A
  • better performance and user experience
  • reduce load
  • increased uptime
  • Increased security
  • scalable and usage by pricing
28
Q

direct attached, file, block and object are considered which one of the following?

A. Types of containers
B. Types of networks
C. Types of Tiers
D. Types of cloud storage

A

D. Types of cloud storage

29
Q

Hybrid Multicloud use cases

A
  • Cloud scaling up and down in response to load
  • Composite cloud
  • Modernization
  • Data and AI
  • Prevent lock-in to a specific vendor’s cloud platform
  • Flexibility of moving workloads
30
Q

What is Microservices Arch?

A

Microservices architecture is when a single application is coupled with independently deployable smaller components or services.

Typically have their own stack running on their own containers

31
Q

Microservices communication

A
  • APIs
  • event streaming
  • message brokers
32
Q

Serverless computing

A
  • an approach of computing that offloads responsibility for common infrastructure management tasks such as scaling, scheduling, patching and provisioning
33
Q

Serverless

A
  • abstracts the infrastructure ture away from developers
  • code executed as individual functions where each function runs inside a stateless container
  • No prior execution context is required
34
Q

Serverless computing services

A

the ibm serverless works on based apacheOpenWhisk

35
Q

Serverless arch are suited for uses cases around

A
  • Data and event processing
  • IoT
  • Microservices
  • Mobile backends
36
Q

Which of the following describes the type of cloud that leverages the best of the cloud models and services across different providers and where applications and workloads work seamlessly across multiple different cloud types?

A. Private Cloud
B. Hybrid Cloud
C. Public Cloud
D. Hybrid Multi-cloud

A

D. Hybrid Multi cloud

37
Q

Which of the following is described as an approach in which a single application is composed of many loosely coupled and independently deployable smaller components or services?

A. Application modernisation
B. Hybrid mulitcloud
C. Microservices
D. Virtualization

A

C. Microservices

Cloud (2 decks)

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