Questions and Answers
What is cloud computing?
What is an analogy used to describe cloud computing?
Residential users access electricity through a cable, similar to how cloud computing allows pay-per-use service over the Internet.
What are the components of cloud computing?
Software as a Service, Platform as a Service, Infrastructure as a Service.
Software as a Service (SaaS) means apps and software are in the cloud.
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What is Platform as a Service (PaaS)?
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Cloud users rent storage, computation, and maintenance from cloud providers (____).
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Which of the following is NOT a basic characteristic of cloud computing?
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What is a pure cloud computing service example?
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What is one advantage of cloud computing regarding document access?
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Cloud computing requires a constant Internet connection.
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What is a disadvantage of cloud computing?
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What is the first step in implementing cloud computing?
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Study Notes
Cloud Computing Overview
- Delivers IT services on demand, allowing businesses and users to access needed resources as needed.
- Utilizes network resources, primarily the Internet, for data processing and storage.
Analogy of Cloud Computing
- Similar to residential electricity access: users only pay for the power consumed, with real-time scalability based on demand.
- Cloud computing offers a pay-per-use model, expanding IT resources dynamically.
Components of Cloud Computing
- Software as a Service (SaaS): Applications and software hosted in the cloud.
- Platform as a Service (PaaS): Internet-based platforms provided by cloud vendors for developers without building their own infrastructure.
- Infrastructure as a Service (IaaS): Cloud providers offer datacenter resources including power, hardware, and networking on a rental basis.
Characteristics of Cloud Computing
- No need to understand the underlying infrastructure.
- Flexibility and elasticity allow for scaling resources up or down according to demand.
- Operations are "always on" and accessible from anywhere.
Example Use Case
- Google Drive: A pure cloud service offering online storage integration with cloud applications like Google Docs, Sheets, and Slides, accessible on various devices.
Benefits of Cloud Computing
- Scalability: Resources can be adjusted on demand for efficiency.
- Cost Efficiency: Reduces the need for internal IT resources and management.
- Lower Computer Costs: No need for high-powered PCs as applications run in the cloud.
- Improved Performance: Less memory usage leads to faster boot and run times.
- Instant Software Updates: Web-based applications update automatically, providing the latest versions at login.
- Document Compatibility: Eliminates format issues when sharing documents in the cloud.
- Data Reliability: Data remains stored in the cloud, protecting against local device failures.
- Universal Access: Documents are available anytime with an Internet connection.
- Device Independence: Applications and documents are accessible across various devices without being tied to one specific machine.
Disadvantages of Cloud Computing
- Internet Dependency: Requires a constant Internet connection to access services and documents.
- Slow Connections: Low-speed Internet can hinder usability and performance of cloud applications.
- Limited Features: Web applications may lack the richness of full desktop versions.
- Potential Latency: Web applications might respond slower than local software due to data transfer requirements.
- Data Security Concerns: Risks associated with storing sensitive data in the cloud, including unauthorized access.
Implementation of Cloud Computing
- Involves a five-step process:
- Define and map business and IT services for migration.
- Identify and evaluate potential cloud service providers.
- Select appropriate service providers and platforms.
- Migrate targeted services to the chosen platforms.
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Description
This quiz covers the essentials of cloud computing, including its components, characteristics, and how it delivers IT services on demand. Understand the pay-per-use model and the different service models like SaaS, PaaS, and IaaS. Explore the flexibility and scalability that cloud solutions provide to businesses.
