CompTIA IT Fundamentals (ITF+)
1 Introduction to IT
1-1 Overview of IT
1-2 IT Careers and Job Roles
1-3 IT Certifications
2 Hardware
2-1 Components of a Computer System
2-2 Peripheral Devices
2-3 Storage Devices
2-4 Input and Output Devices
2-5 Power Supplies and Cooling Systems
3 Networking
3-1 Networking Concepts
3-2 Network Types
3-3 Network Components
3-4 Network Configuration
3-5 Network Security
4 Mobile Devices
4-1 Mobile Device Types
4-2 Mobile Device Connectivity
4-3 Mobile Device Management
4-4 Mobile Device Security
5 Hardware and Network Troubleshooting
5-1 Troubleshooting Methodology
5-2 Common Hardware Issues
5-3 Common Network Issues
5-4 Troubleshooting Tools
6 Operating Systems
6-1 Operating System Functions
6-2 Windows Operating Systems
6-3 macOS Operating Systems
6-4 Linux Operating Systems
6-5 Mobile Operating Systems
7 Software Troubleshooting
7-1 Troubleshooting Methodology
7-2 Common Software Issues
7-3 Troubleshooting Tools
8 Security
8-1 Security Concepts
8-2 Threats and Vulnerabilities
8-3 Security Best Practices
8-4 Security Tools and Technologies
9 Operational Procedures
9-1 IT Documentation
9-2 Change Management
9-3 Disaster Recovery
9-4 Safety Procedures
9-5 Environmental Controls
10 Software
10-1 Types of Software
10-2 Software Licensing
10-3 Software Installation and Configuration
10-4 Software Updates and Patches
11 Database Fundamentals
11-1 Database Concepts
11-2 Database Management Systems
11-3 Data Storage and Retrieval
12 Security Best Practices
12-1 User Authentication
12-2 Data Protection
12-3 Network Security Best Practices
12-4 Physical Security
13 Cloud Computing
13-1 Cloud Concepts
13-2 Cloud Service Models
13-3 Cloud Deployment Models
13-4 Cloud Security
14 Virtualization
14-1 Virtualization Concepts
14-2 Virtualization Technologies
14-3 Virtualization Benefits
15 IT Support
15-1 Customer Service Skills
15-2 IT Support Tools
15-3 Troubleshooting Techniques
15-4 Communication Skills
16 Emerging Technologies
16-1 Internet of Things (IoT)
16-2 Artificial Intelligence (AI)
16-3 Blockchain
16-4 Augmented Reality (AR) and Virtual Reality (VR)
13 Cloud Computing Explained

13 Cloud Computing Explained

1. Cloud Computing

Cloud Computing is the delivery of computing services over the internet, including servers, storage, databases, networking, software, and analytics. It allows for on-demand access to a shared pool of resources, enabling faster innovation and flexible resources.

Example: Think of cloud computing as a utility company. Just as you turn on the tap for water or flip a switch for electricity, you access computing resources on demand from the cloud.

2. Infrastructure as a Service (IaaS)

Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet. It offers virtual machines, storage, and networking, allowing users to deploy and manage their own operating systems and applications.

Example: Consider IaaS as renting a fully equipped kitchen. Just as you rent a kitchen with all appliances and utensils, IaaS provides a virtual infrastructure with all necessary components.

3. Platform as a Service (PaaS)

Platform as a Service (PaaS) offers a platform allowing customers to develop, run, and manage applications without dealing with the underlying infrastructure. PaaS includes tools for application development, deployment, and management.

Example: Think of PaaS as a pre-built house with a foundation and walls. Just as you focus on decorating and living in the house, PaaS allows you to focus on developing and running applications.

4. Software as a Service (SaaS)

Software as a Service (SaaS) delivers software applications over the internet on a subscription basis. Users access the software through a web browser without needing to install or manage the software on their devices.

Example: Consider SaaS as a streaming service. Just as you stream movies and shows without downloading them, SaaS provides access to software applications without installation.

5. Public Cloud

Public Cloud is a type of cloud computing where resources are owned and operated by a third-party cloud service provider and delivered over the public internet. Public clouds are shared among multiple customers.

Example: Think of a public cloud as a public library. Just as a library is accessible to everyone, public cloud resources are accessible to multiple users.

6. Private Cloud

Private Cloud is a type of cloud computing where resources are dedicated to a single organization. It can be managed internally or by a third party and hosted either on-premises or off-premises.

Example: Consider a private cloud as a private library. Just as a private library is accessible only to its members, private cloud resources are accessible only to a single organization.

7. Hybrid Cloud

Hybrid Cloud is a combination of public and private clouds, allowing data and applications to be shared between them. Hybrid clouds provide flexibility and more deployment options.

Example: Think of a hybrid cloud as a hybrid car. Just as a hybrid car uses both electricity and gasoline, a hybrid cloud uses both public and private resources.

8. Multi-Cloud

Multi-Cloud is the use of multiple cloud computing services from different cloud providers. This approach allows organizations to avoid vendor lock-in and leverage the strengths of different providers.

Example: Consider multi-cloud as shopping at multiple stores. Just as you shop at different stores for the best deals, multi-cloud allows you to use services from different providers for the best solutions.

9. Cloud Storage

Cloud Storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, managed, backed up, and made available to users over a network (typically the internet).

Example: Think of cloud storage as a digital attic. Just as you store items in an attic for safekeeping, cloud storage keeps your data safe and accessible.

10. Cloud Security

Cloud Security involves protecting data, applications, and infrastructure involved in cloud computing. It includes measures such as encryption, access control, and monitoring to ensure data privacy and integrity.

Example: Consider cloud security as a security system for a house. Just as a security system protects a house from intruders, cloud security protects data from unauthorized access.

11. Cloud Scalability

Cloud Scalability refers to the ability to increase or decrease resources based on demand. Cloud services can scale up or down dynamically to meet changing needs without significant downtime.

Example: Think of cloud scalability as a rubber band. Just as a rubber band can stretch and contract, cloud resources can scale up and down based on demand.

12. Cloud Cost Management

Cloud Cost Management involves monitoring and optimizing the costs associated with cloud services. It includes strategies such as right-sizing resources, reserved instances, and cost allocation tags.

Example: Consider cloud cost management as budgeting. Just as you manage your budget to avoid overspending, cloud cost management helps you control cloud expenses.

13. Cloud Migration

Cloud Migration is the process of moving data, applications, or other business elements to a cloud computing environment. It involves planning, execution, and ongoing management to ensure a smooth transition.

Example: Think of cloud migration as moving to a new house. Just as you plan and execute a move to a new house, cloud migration involves planning and executing the move to a cloud environment.