Cloud module 1 Flashcards
(37 cards)
NIST Defintion
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
5 Characteristics
- On demand self service
- Broad Network Access
- Resource Pooling
- Rapid Elasticity
- Measured Service
Infrastructure
physical hardware
Virtualisation
Enable through hypervisors - different types
sharing hosting services - visual private servers and dedicated servers
Utility model - PAYG
Hypervisors
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
Benefits of cloud adoption
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.
Challenges of cloud adoption
data security
Governance issues
legal, regulatory and compliance issues
lack of standardisation in how the
Salesforce
Saas & CRM system - specialises
SAP
Enterprise software applications
ERP
CRM
HR
FINANCE
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 model for enabling convenient, on-demand Network access to a shared pool of compute resources
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. 19050
Cloud adoption
- 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
Smart Assistants
Learn a user’s preference over time
Over time will learn to anticipate and give insights
Blockchain
A secure, immutable network that allows members to view only the transactions that are relevant to them
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. the power, scalability, flexibility and pay-as-you-go economics.
According to an ibm study how many business are taking this.
A. 35%
B. 65%
C. 75%
D. 85%
C. 75%
Cloud Storage
- 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
4 types of storage
- Direct Attached
- File Storage
- Block Storage
- Object Storage
Direct Attached
- local storage
- within same server or rack
- fast
- use for OS
- Ephemeral (temporary)
- Not Shared-dedicated to a singer host
- Not resilient
File Storage
- 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
Block Storage
- 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.
Object Storage
- 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
File Storage
- attached to a compute node to store data
- more resilient to failure
- less disk management and maintenance
Block storage
Block storage is only mounted to one compute node at a time
