Tech+ Lesson 3.1

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What do you think the internet is made of?

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Name as many web browsers as you can.

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How did people access information before the internet and world wide web?

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• What are some of the information apps you have on your phone?

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How do you share information with others without knowing what language they speak?

How do you share information with others without knowing what language they speak?

You need a universal interpreter.

Read...

• This allows for easier, quicker communication.

• It also preserves data integrity. The data you get is:

  • What you requested

  • Complete

  • Correct

• Not too long ago, sharing information with someone using a different operating system or application often meant they couldn't access your content. 

• Modern protocols and browser applications allow all networks to talk to each other and share information.

• All internet connected computers follow these protocols.

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What is the Internet?

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• What is a decentralized network?

  • There is no single, centralized hub.

  • No single entity:

    • Governs it

    • Manages it

    • Maintains it

    • Grows it

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• What is a global computer network?

  • Networks connected to other networks

  • The internet is a global collection of networks connected to other networks.

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• What is the common protocol suite?

  • The set of protocols that allows computers to communicate seamlessly across platforms. Examples:

    • Windows

    • Apple

    • Linux

• Does anyone manage the internet?

  • Initially, the US government managed it but transferred control to internet service providers (ISPs).

Did you know?

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Lookup the OSI model; what are the 7 layers?

Get ready to answer questions...

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What is the world wide web?

Multiple Choice

code that determines how a webpage looks on your screen

• JavaScript
• PHP
• SQL
• HTML and CSS

Multiple Choice

this allows web browsers to communicate with web servers and transmit data across the world wide web

• HTTP
• FTP
• SMTP
• POP3

Multiple Choice

this manages, stores, and delivers data to clients (users) over a network

• server
• firewall
• database
• router

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Are all servers web servers? Why or why not?

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What is a web browser?

Common elements and features

Search directly from the browser interface

Search engine

• Address bar for URLs

• Back and forward buttons

• Bookmarks

• History

Navigation

Common elements and features

Software modules that expand functionality

Extensions

• Private browsing

• Passkeys

• Tracking prevention

• Etc.

Security

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Expain, using technical terms you learned, how the Internet works.

1st research; what is a FQDN? Can you explain it?

Create a google doc to keep notes.

Search up FQDN

After research, create a fake FQDN for a website or service

Type it on the google doc

Design a FQDN

Create 3 subdomains and explain each purpose of them

Put these 3 ideas on the google doc

Create subdomains

​Activity: Create a FQDN

Be ready to share your FQDN info; DO NOT MOVE FORWARD UNLESS READY!

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What is your FQDN?

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What is your subdomain 1?

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What is your subdomain 2?

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What is your subdomain 3?

Lesson done! Now you can complete the next task!