Podcast
Questions and Answers
What is a key benefit of deploying applications in a PaaS environment?
What is a key benefit of deploying applications in a PaaS environment?
- Reduced need for virtualization technology
- Full control over data center space allocation
- Ability to manage underlying hardware and software layers
- No need to worry about buying and managing underlying hardware and software layers (correct)
What is a characteristic of IaaS?
What is a characteristic of IaaS?
- Allows for the deployment of custom applications
- Eliminates the need for virtualization technology
- Provides software applications over the internet
- Offers virtualized computing resources as a service (correct)
What is a key difference between SaaS and PaaS?
What is a key difference between SaaS and PaaS?
- Level of control over underlying infrastructure (correct)
- Scalability of resources provided
- Type of applications provided
- Level of virtualization technology required
What is a key enabler of IaaS?
What is a key enabler of IaaS?
What is a benefit of using cloud infrastructure?
What is a benefit of using cloud infrastructure?
What is the primary enabler of Infrastructure as a Service (IaaS)?
What is the primary enabler of Infrastructure as a Service (IaaS)?
What is the term used to describe the offering of computing resources as a service or utility through virtualization and dynamic provisioning?
What is the term used to describe the offering of computing resources as a service or utility through virtualization and dynamic provisioning?
Which of the following is an example of a cloud service that allows users to access their desktop virtually from anywhere?
Which of the following is an example of a cloud service that allows users to access their desktop virtually from anywhere?
What is the term used to describe the combination of virtualization, dynamic provisioning, and resource sharing in cloud computing?
What is the term used to describe the combination of virtualization, dynamic provisioning, and resource sharing in cloud computing?
Which of the following is NOT an enabling technology of cloud computing?
Which of the following is NOT an enabling technology of cloud computing?
What is the term used to describe the ability to offer everything as a service?
What is the term used to describe the ability to offer everything as a service?
What is the primary characteristic of a multi-tenant-efficient instance in a SaaS architecture?
What is the primary characteristic of a multi-tenant-efficient instance in a SaaS architecture?
What is the primary difference between a SaaS and a PaaS model?
What is the primary difference between a SaaS and a PaaS model?
What is the primary benefit of a scalable SaaS architecture?
What is the primary benefit of a scalable SaaS architecture?
What is the primary characteristic of an IaaS model?
What is the primary characteristic of an IaaS model?
What is the primary difference between a configurable SaaS instance and a non-configurable SaaS instance?
What is the primary difference between a configurable SaaS instance and a non-configurable SaaS instance?
What is the primary benefit of a SaaS model for customers?
What is the primary benefit of a SaaS model for customers?
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Study Notes
Cloud Computing Overview
- Cloud computing allows deployment of applications without the burden of managing underlying hardware and software.
- Main models of cloud services include Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS).
Infrastructure as a Service (IaaS)
- IaaS provides computer infrastructure as fully outsourced services.
- It typically includes servers, data center space, software, and network equipment.
- Virtualization technology is critical, enabling resource pool sharing (e.g., web servers, storage).
- Allows higher utilization rates of hardware through resource consolidation.
Platform as a Service (PaaS)
- PaaS delivers an integrated computing platform for building, testing, and deploying custom applications.
- It provides a solution stack as a service, easing the development process.
Software as a Service (SaaS)
- SaaS began gaining traction around 1999, offering applications licensed to customers on an on-demand basis.
- Applications are hosted on vendor servers with access via a web browser.
- Software is downloaded to a consumer's device and becomes disabled after the contract ends.
- Key characteristics include configurability, multi-tenant efficiency, and scalability.
Evolution of Cloud Services
- The service model has expanded beyond IaaS, PaaS, and SaaS to include Everything as a Service (XaaS), such as:
- Desktop as a Service (DaaS)
- Communication as a Service (CaaS)
- Virtualization as a Service (VaaS)
- Hardware as a Service (HaaS)
Enabling Technologies
- Several technologies underpin cloud computing, such as:
- Virtualization
- Web 2.0
- Distributed storage and computing
- Utility computing
- Network bandwidth and latency management
- Fault-tolerant systems
Benefits of Cloud Computing
- Resource sharing and consolidation through virtualization and dynamic provisioning.
- Ability to customize resources for different user needs within heterogeneous environments.
- Supports various workloads, including data-intensive processing and high-volume transactions.
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