Infrastructure for Tech+

Infrastructure covers computing devices, internal components, storage, peripherals, interfaces, virtualization, cloud, networking, and wireless basics. The public guide gives the lesson content for free; the app adds tracked testing, weak-area practice, and progress history.

8topics

31lessons

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Topics in this module

Computing Devices

Computing devices come in many forms, each suited to certain roles: - Smartphones: Pocket-sized mobile computers combining cellular telephony with computing. Used for communication, apps, internet access.

4 lessons

Internal Components

A computer's internal components each have specific roles: - Motherboard: Primary circuit board that holds and interconnects all components. Provides data pathways (buses) for components to communicate.

7 lessons

Storage Types

Various storage types can be compared by volatility, access speed, and purpose: - Volatile vs Non-volatile: Volatile storage (RAM) loses data when power is off. Non-volatile storage (HDD, SSD) retains data.

3 lessons

Peripheral Setup

Peripheral devices extend computer functionality: - Input devices: Keyboard, Mouse, Scanner, Webcam, Microphone - Output devices: Monitor/Display, Printer, Speakers/Headset, Projector - External storage: External hard drive, USB flash drive, Optical drive

3 lessons

Device Interfaces

What "in scope" looks like: given a device or scenario, choose the interface that makes sense (e.g., a modern laptop display output, a wired Ethernet connection, a short-range phone-to-device connection), or identify what a connector/tool is for.

4 lessons

Virtualization and Cloud

In scope: - Virtualization: hypervisor, guest operating system (OS) - Cloud service models: IaaS, PaaS, SaaS - Deployment models: on premises, cloud, hybrid

3 lessons

Networking Basics

2.7 Compare and contrast common internet service types: - Fiber optic, cable, DSL, wireless/RF, satellite, cellular

4 lessons

Wireless Networks

In scope (recognition + simple comparison): - Common Wi-Fi standards: 802.11n / 802.11ac / 802.11ax - Speed considerations (newer standards generally faster) - Basic frequency bands (2.4 GHz vs 5 GHz) at a high level - Channels/interference as basic concepts (no deep RF...

3 lessons

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