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Questions and Answers
What key benefit does elastic leasing in cloud computing provide?
In the context of cloud computing, what does the term 'virtualization' refer to?
Which of these is NOT a type of cloud service?
Which characteristic of cloud computing primarily supports IoT and smart devices?
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What role do firewalls play in cloud computing security?
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Why might some industries prefer in-house data management over cloud solutions?
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What distinguishes Software as a Service (SaaS) from other cloud service types?
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What is a primary advantage of pooling resources in a cloud infrastructure?
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Study Notes
Introduction to Cloud Computing
- Cloud computing uses third-party servers to store data.
- It eliminates the need for expensive hardware and database management.
Historical Context
Mainframes and Thin Clients
- Mainframes were large, centralized computers handling all processing tasks.
- Thin clients were simple terminals used to interact with mainframes.
Client-Server Era
- Tasks were shared between individual computers and servers.
- Users could perform basic tasks locally but relied on servers for specific operations, like class registration.
Cloud Computing Advantages
- Data storage and processing are handled externally.
- Enables the Internet of Things (IoT) and smart devices.
- Allows access to data from anywhere with an internet connection.
Key Concepts in Cloud Computing
Definitions
- Cloud Computing: Applications and services running on a distributed network using virtual resources.
- Distributed Network: Multiple users can access and share data.
- Virtualization: Software simulates hardware functions, allowing multiple operating systems on a single machine.
Elastic Leasing
- Elastic: Resources can be dynamically adjusted based on demand to avoid over- or under-provisioning.
- Pooled Resources: Sharing server space reduces costs through economies of scale.
Security in Cloud Computing
- Encryption: Protects communication by encoding messages for authorized users only.
- Firewalls: Limit network access, acting as barriers to unauthorized users.
- Virtual Private Networks (VPNs): Create secure, private connections over public networks, often used for accessing sensitive data remotely.
Types of Cloud Services
Infrastructure as a Service (IaaS)
- Provides basic storage and computational resources with minimal additional features.
Platform as a Service (PaaS)
- Offers a platform for developing, running, and managing applications without infrastructure management.
Software as a Service (SaaS)
- Delivers software applications over the internet, eliminating local installation requirements.
Considerations for Cloud Usage
- Security Concerns: Some industries require in-house data management for security compliance.
- Cost and Scalability: Cloud services offer cost-effective and scalable solutions for businesses.
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Description
Test your understanding of cloud computing concepts, including its historical context and advantages. This quiz covers the evolution from mainframes to the client-server model and the benefits of cloud technology. Assess your knowledge of key definitions related to cloud computing.
