38 Questions
What is the main characteristic of a distributed system?
Components communicate and coordinate their actions only by passing messages.
What is the term for the concept of pooling resources such as CPUs, disks, and networks?
Pool of Resources
Which of the following is NOT a computing paradigm?
Artificial Intelligence
What was the significant change in IT priorities according to ESG's 2011 survey?
Increased importance of cloud computing services.
What is the term for the concept of providing resources such as computing power, storage, and networks over the internet?
Cloud Computing
What is the forecast for IT spending on cloud computing according to Gartner?
Billions of U.S. dollars.
What is the total market size of Cloud Services in 2021?
302.5 Billion US$
Which of the following Cloud Services had the highest growth rate from 2019 to 2020?
Cloud System Infrastructure Services (IaaS)
What is the estimated total market size of Cloud Services in 2023?
591 Billion US$
What is the characteristic of Cloud Computing that enables rapid provisioning and release of resources?
On-demand network access
What type of Cloud Service involves the provision of applications and software over the internet?
Cloud Application Services (SaaS)
Which of the following is NOT a characteristic of Cloud Computing?
Convenient service provider interaction
What is the primary advantage of Cloud Computing?
Convenient, on-demand network access
Which of the following Cloud Services involves the provision of infrastructure, such as servers and storage, over the internet?
Cloud System Infrastructure Services (IaaS)
What is the primary characteristic of Resources Pooling in cloud computing?
Sharing of resources by multiple tenants
Which of the following service models provides a solution stack as a service?
Platform as a Service (PaaS)
What is the primary benefit of Measured Service in cloud computing?
Pay-as-you-go service with metering capability
What is the primary characteristic of Rapid Elasticity in cloud computing?
Resources can scale up or down rapidly
Which of the following is an example of Software as a Service (SaaS)?
Google Docs
What is the primary benefit of Database as a Service (DBaaS)?
Application owners do not have to maintain the database themselves
What is the primary characteristic of On-demand Self-service in cloud computing?
Unilateral provision of computing capabilities as needed
What is the primary benefit of MongoDB Atlas?
Flexible, affordable, and scalable database management
What is the primary benefit of using a DBaaS platform?
No installation is needed
Which of the following is a key advantage of MongoDB?
Flexible document schemas
What is the primary difference between a public cloud and a private cloud?
Ownership and management
Which of the following cloud deployment models involves creating solutions based on more than one model?
Hybrid Cloud
What is the primary advantage of the pay-per-use cost model for startups and SMEs?
Reduced upfront costs
Which of the following is a key benefit of using cloud services for rapid prototyping?
Faster time-to-market
What is the primary concern when outsourcing data to a cloud service?
Security and data protection
Which of the following cloud services is particularly well-suited for startups and SMEs?
Platform-as-a-Service (PaaS)
What is a major concern for companies when considering cloud computing?
Security, privacy, and legal issues
What is a characteristic of cloud services?
Continually developed and updated
What is a consequence of moving applications to the cloud?
Large internal changes are often necessary
What is a benefit of parallelization in cloud computing?
Better performance for 1 hour on 100 virtual CPUs
What is a motivation for cloud computing in the future?
Mobile interactive applications
What is a challenge for users/developers when using cloud services?
Outage of cloud services and cancellation of services are possible risks
What is a characteristic of cloud computing contracts?
Short change cycles, about 30 days
What is a benefit of cloud computing for the Internet of Things (IoT)?
Support of low-performant devices by power from the cloud
Study Notes
Cloud Computing Providers
- Well-known commercial cloud providers include Amazon Web Services, Microsoft Azure, Digital Ocean, Google Compute Engine, OpenStack, and Rackspace.
Virtualization and Cloud Computing
- Distributed systems started the concept of cloud computing.
- A distributed system is one where components located at networked computers communicate and coordinate their actions only by passing messages.
- The largest supercomputer in the world is the Internet, which is a pool of resources including CPUs, disks, networks, knowledge, and more.
Cloud Computing Hype
- There has been a significant shift in IT priorities with an increased focus on cloud computing services since 2013/2014.
- IT spending on cloud computing is expected to grow, with estimates suggesting it will exceed $591 billion by 2023.
Definition of Cloud Computing
- Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction.
Five Characteristics of Cloud Computing
- Resources Pooling: Resources are shared by multiple tenants, providing a sense of location independence.
- Rapid Elasticity: Resources can scale up or down rapidly and can be provisioned and de-provisioned automatically.
- On-demand Self-service: Unilateral provision of computing capabilities as needed, without requiring human intervention.
- Broad Network Access: Access to cloud resources from anywhere, using standard mechanisms.
- Measured Service: Pay-as-you-go service with metering capability.
Service Models
- Infrastructure as a Service (IaaS): Provision of computer infrastructure as a service.
- Platform as a Service (PaaS): Solution stack as a service, providing computational resources via a platform.
- Software as a Service (SaaS): Model of software deployment where a provider licenses an application to consumers for use as a service on demand.
Cloud Database
- A Cloud Database is a database that runs on a cloud computing platform, providing access as a service.
- Examples include MongoDB Atlas, a fully managed cloud platform, and DBaaS.
Deployment Models
- Public Cloud: Cloud solution used by anyone.
- Private Cloud: Cloud solution owned by the organization running the cloud.
- Hybrid Cloud: Creating solutions based on more than one of the above models.
- Community Cloud: Cloud solution used by a group of organizations.
Influencing IT Aspects
- Many IT aspects are influenced by cloud computing, including cost, security, and data management.
Summarizing Promises of the Cloud
- Rapid scalability and flexibility
- Cost efficiency
- Access to advanced technology
- Ability to focus on core business
- Reduced upfront costs
Cloud for Startup/SME and Rapid Prototyping
- Cloud services are convenient for startups and SMEs, offering a pay-per-use cost model and eliminating the need for costly upfront investments.
- Allows businesses to focus on core business, with computer center services outsourced.
- However, data outsourcing can be a concern due to security, privacy, and legal issues.
Learn about the five essential characteristics of cloud computing, including resource pooling, and how it promotes availability.
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