Skip to content

Latest commit

 

History

History
146 lines (86 loc) · 6.28 KB

IntroProtocols.md

File metadata and controls

146 lines (86 loc) · 6.28 KB

⛓ Intro to Protocols

⏱ Agenda {docsify-ignore}

[05m] 🏆 Objectives

  1. Present an overview of the course and syllabus.
  2. Define the term protocol and describe when and where they are used.
  3. List common protocols used by developers.
  4. Create a diagram of data flowing through a protocol.

[20m] 👋 Welcome to Class

Instructor will walk through the syllabus and answer questions about the course.

Students, remember to join the course Slack channel, #bew2-4-dapps!

[30m] 📖 Overview: Network Protocols

Protocol: Standard set of rules that allow devices to communicate with one other.

Protocols are a fundamental aspect of digital communication, and are the digital equivalent to spoken language! If two people share the same language, they can communicate effectively; similarly, if two hardware devices support the same protocol, they can communicate with each other --- regardless of the manufacturer or type of device.

The rules of each protocol must describe...

  • What type of data can be transmitted.
  • What commands are used to send and receive the data.
  • How transfers of the data are verified.

📲IMPORTANT: In Objective-C and Swift, a protocol is a syntactic structure that defines a blueprint of methods, properties, and other requirements that suit a particular task or piece of functionality. The above definition is most common.

Real Life Examples

Task Protocol
Sending an email SMTP
Visiting a website HTTP

Four Categories

Network Layers

1️⃣ Link Layer    PPP, DSL, Wi-Fi

Establish communication between devices at a hardware level.

The hardware on each device must support the same link layer protocol to transmit data to one another.

2️⃣ Internet Layer    IPv4, IPv6

Initiate data transfers and route them over the internet.

3️⃣ Transport Layer    TCP, UDP

Define how packets are sent, received, and confirmed.

4️⃣ Application Layer    HTTP, IMAP, FTP

Contain commands for specific applications.

  • Example 1: Browser uses HTTPS to securely download the contents of a webpage from a web server.
  • Example 2: Email client uses SMTP to send email messages through a mail server.

[10m] 🌴 BREAK {docsify-ignore}

[05m] 💻 Prep: Simulator Activities on Code.org

  1. Students: Join Code.org Section.
  2. Make sure you complete the activities! What you learn through your experiments with the Internet Simulator will be utilized throughout this course. Make sure you complete the reflection questions when asked.
  3. This activity earns you participation credit in the course. The instructor will check your progress on the Code.org dashboard and randomly visit your breakout rooms to verify your participation.
  4. Questions from each module's check for understanding may appear on Quiz 1: Protocols.

[30m] 💻 Internet Simulator: Broadcast

In groups of 5 to 6, complete the The Need for Addressing module.

When you reach the activity, use this Activity Guide to get started.

Make sure you also grab a copy of the Game Board! You'll need it to complete the exercise.

[35m] 💻 Internet Simulator: Routers

In groups of 3 to 4, complete the Routers and Redundancy module.

When you reach the activity, use this Activity Guide to get started.

[35m] 💻 Internet Simulator: Packets

In groups of 2 to 4, complete the Packets and Making a Reliable Internet module.

When you reach the activity, use this Activity Guide to get started.

📚 Resources & Credits