Networks & Internet

Computer Networks & The Internet

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Understanding how computing devices connect to form local networks and the global internet, sharing data securely through wired, wireless, and cloud protocols.

Level 1

Digital Connections

Identify devices that connect together to share information locally or wirelessly.

Learning objective

Students will understand that computing devices can connect to each other to share pictures, messages, and files.

Let's Go!

Step media

Learn

When computers link together, they form a NETWORK. Networks allow devices to talk to each other, share printers, and send messages across the room or across the world! In computing, connected devices allow people to communicate and share ideas across spaces. As you explore the interactive Network Packet Simulator below, focus on how to draws a network connection showing devices linked together.

Visual guide for Digital Connections
Interactive Simulator Sandbox
Network Architecture:Step 1 โ€ข Bronze Tier
๐ŸŒ
Step 1 โ€ข Bronze (Level 1): Digital Connections - Device Linking

Identify classroom devices and establish wireless network connections from the tablet to the printer and laptop to smart TV.

In Progress
๐Ÿ’ป
Client PC
192.168.1.42
๐Ÿ“ก
Gateway Router
192.168.1.1
๐Ÿ“–
DNS Resolver
8.8.8.8
โ˜๏ธ
Cloud Web Server
104.22.45.9
Classroom Device Network Linking

Click the buttons below to establish network connections between classroom hardware:

๐Ÿ“ฆ Wire-Level Packet Dissector

Inspect the protocol headers and data payload inside a captured network frame:

Ethernet IISource MAC: 00:1A:2B:3C:4D:5E โž” Dest MAC: 00:1A:2B:99:88:77
Internet Protocol v4Src IP: 192.168.1.42 โž” Dst IP: 104.22.45.9 (TTL: 64)
Transmission Control ProtocolSrc Port: 52140 โž” Dst Port: 443 (HTTPS), Seq: 1001, ACK: 1
Encrypted TLS 1.3 Payload (1420 bytes):
7f a4 3c e8 91 2b 44 8a c9 e1 0f 42 88 bc 19 33
00 48 21 fb de ad be ef 12 34 56 78 9a bc de f0
[Encrypted Application Data Scrambled via AES-256-GCM]
๐Ÿงญ Network Protocol Quick Reference
DNS (Port 53)Translates URLs (names) to numerical IP addresses.
HTTP vs HTTPS (Ports 80 / 443)HTTP is unencrypted plain text; HTTPS encrypts data with TLS certificates.
TCP vs UDPTCP guarantees packet delivery with ACKs; UDP sends faster without resending lost packets.

Apply Simulator Skills โ€ข Try it yourself

Connect the Classroom Devices

๐Ÿ”„Direct Simulator Transfer: Step 1 Tasks 1, 2 & 3

Now that you've practiced the virtual mechanics in the simulator above, apply those exact skills in your real computer environment:

๐ŸŒŸ Student Project GuideSuccess Criteria & WAGOLL (What A Good One Looks Like)โ–พ

๐ŸŽฏ Task Success Criteria (Rubric)

Foundation

Identifies a tablet connected to a printer or Wi-Fi router.

Developing

Explains that connected devices can share pictures and sound.

Secure (Goal)

Draws a network connection showing devices linked together.

Mastery

Distinguishes between standalone devices and networked devices.

๐Ÿ‘€ What A Good One Looks Like (WAGOLL)

๐Ÿ“
Save to Your Website Portfolio:

When you finish creating your project in your software, copy the share link or take a screenshot and publish it onto your student portfolio website!

Reflect

๐ŸŽฏ

Self-Assessment & Reflection

Why is it helpful to connect computers together in a school?

๐ŸŸขSecure Level

Draws a network connection showing devices linked together.

Learning check

Learning Check

What is a computer network?

Select the correct answer:

Answer correctly to unlock the next level.

Super! A network is a group of connected devices sharing information.Remember: networks connect multiple computing devices so they can share data.
Teacher setup, curriculum links and progress descriptors

Spark support

Routine: See-Think-Wonder

Teacher notes: Facilitate the See-Think-Wonder routine for 2โ€“3 minutes. Encourage students to connect the prompt to Form (Connected devices allow people to communicate and share ideas across spaces.).

Achievement pathway

  • Foundation: Identifies a tablet connected to a printer or Wi-Fi router.
  • Developing: Explains that connected devices can share pictures and sound.
  • Secure: Draws a network connection showing devices linked together.
  • Mastering: Distinguishes between standalone devices and networked devices.

Curriculum links

Curriculum strand: Networks & Communication

Outcome: NETW.01.B.1.1 โ€” Identify devices that connect together to share information locally or wirelessly.

PYP: Form ยท Connected devices allow people to communicate and share ideas across spaces.

Learner profile: Inquirer

Competency tags

  • Networks
  • Connected Devices
  • Sharing
  • Connections

Gate support

Accessibility alternative: Students may verbally explain or point to the correct answer for "What is a computer network?" with a teacher or teaching assistant.

Teacher override: allow

Back to top

Locked level

Level 2: Wi-Fi & Cables

Complete the previous learning check to unlock this next level.

Level 2

Wi-Fi & Cables

Compare wired Ethernet connections with wireless Wi-Fi and Bluetooth transmission.

Learning objective

Students will compare how wired cables and invisible wireless signals (Wi-Fi, Bluetooth) transmit network data.

Let's Go!

Step media

Learn

Wired networks use physical copper or fibre cables (Ethernet) to carry electricity or light signals. Wireless networks (Wi-Fi and Bluetooth) use invisible radio waves to travel through the air! In computing, wired and wireless signals enable continuous information transfer. As you explore the interactive Network Packet Simulator below, focus on how to explain advantages of Wi-Fi mobility vs Ethernet speed and stability.

Visual guide for Wi-Fi & Cables
Interactive Simulator Sandbox
Network Architecture:Step 2 โ€ข Bronze Tier
๐ŸŒ
Step 1 โ€ข Bronze (Level 1): Digital Connections - Device Linking

Identify classroom devices and establish wireless network connections from the tablet to the printer and laptop to smart TV.

In Progress
๐Ÿ’ป
Client PC
192.168.1.42
๐Ÿ“ก
Gateway Router
192.168.1.1
๐Ÿ“–
DNS Resolver
8.8.8.8
โ˜๏ธ
Cloud Web Server
104.22.45.9
Classroom Device Network Linking

Click the buttons below to establish network connections between classroom hardware:

๐Ÿ“ฆ Wire-Level Packet Dissector

Inspect the protocol headers and data payload inside a captured network frame:

Ethernet IISource MAC: 00:1A:2B:3C:4D:5E โž” Dest MAC: 00:1A:2B:99:88:77
Internet Protocol v4Src IP: 192.168.1.42 โž” Dst IP: 104.22.45.9 (TTL: 64)
Transmission Control ProtocolSrc Port: 52140 โž” Dst Port: 443 (HTTPS), Seq: 1001, ACK: 1
Encrypted TLS 1.3 Payload (1420 bytes):
7f a4 3c e8 91 2b 44 8a c9 e1 0f 42 88 bc 19 33
00 48 21 fb de ad be ef 12 34 56 78 9a bc de f0
[Encrypted Application Data Scrambled via AES-256-GCM]
๐Ÿงญ Network Protocol Quick Reference
DNS (Port 53)Translates URLs (names) to numerical IP addresses.
HTTP vs HTTPS (Ports 80 / 443)HTTP is unencrypted plain text; HTTPS encrypts data with TLS certificates.
TCP vs UDPTCP guarantees packet delivery with ACKs; UDP sends faster without resending lost packets.

Apply Simulator Skills โ€ข Try it yourself

Build a Hybrid Network

๐Ÿ”„Direct Simulator Transfer: Step 2 Tasks 4, 5 & 6

Now that you've practiced the virtual mechanics in the simulator above, apply those exact skills in your real computer environment:

๐ŸŒŸ Student Project GuideSuccess Criteria & WAGOLL (What A Good One Looks Like)โ–พ

๐ŸŽฏ Task Success Criteria (Rubric)

Foundation

Identifies an Ethernet cable and a Wi-Fi symbol.

Developing

Sorts connection types into wired (cables) vs wireless (radio waves).

Secure (Goal)

Explains advantages of Wi-Fi mobility vs Ethernet speed and stability.

Mastery

Selects appropriate connection methods for different hardware devices.

๐Ÿ‘€ What A Good One Looks Like (WAGOLL)

๐Ÿ“
Save to Your Website Portfolio:

When you finish creating your project in your software, copy the share link or take a screenshot and publish it onto your student portfolio website!

Reflect

๐ŸŽฏ

Self-Assessment & Reflection

What can block or weaken wireless Wi-Fi signals in a building?

๐ŸŸขSecure Level

Explains advantages of Wi-Fi mobility vs Ethernet speed and stability.

Learning check

Learning Check

How do Wi-Fi networks send information through the air?

Select the correct answer:

Answer correctly to unlock the next level.

Spot on! Wi-Fi uses radio waves to send data through the air without wires.Remember: wireless connections like Wi-Fi transmit data using radio waves.
Teacher setup, curriculum links and progress descriptors

Spark support

Routine: Think-Pair-Share

Teacher notes: Facilitate the Think-Pair-Share routine for 2โ€“3 minutes. Encourage students to connect the prompt to Function (Wired and wireless signals enable continuous information transfer.).

Achievement pathway

  • Foundation: Identifies an Ethernet cable and a Wi-Fi symbol.
  • Developing: Sorts connection types into wired (cables) vs wireless (radio waves).
  • Secure: Explains advantages of Wi-Fi mobility vs Ethernet speed and stability.
  • Mastering: Selects appropriate connection methods for different hardware devices.

Curriculum links

Curriculum strand: Network Infrastructure

Outcome: NETW.02.B.1.2 โ€” Compare wired Ethernet connections with wireless Wi-Fi and Bluetooth transmission.

PYP: Function ยท Wired and wireless signals enable continuous information transfer.

Learner profile: Communicator

Competency tags

  • Wi-Fi
  • Ethernet
  • Bluetooth
  • Wireless Transmission

Gate support

Accessibility alternative: Students may verbally explain or point to the correct answer for "How do Wi-Fi networks send information through the air?" with a teacher or teaching assistant.

Teacher override: allow

Back to top

Locked level

Level 3: Routers & Switches

Complete the previous learning check to unlock this next level.

Level 3

Routers & Switches

Model Local Area Network (LAN) hardware components including routers, switches, and network cables.

Learning objective

Students will understand the role of network switches and routers in managing local traffic within a Local Area Network (LAN).

Let's Go!

Step media

Learn

A Local Area Network (LAN) connects devices within one building. A SWITCH acts as a traffic traffic-cop directing local messages, while a ROUTER acts as a gateway connecting your LAN to outside networks! In computing, local area networks organize device traffic within buildings and communities. As you explore the interactive Network Packet Simulator below, focus on how to diagrams a complete school LAN connecting PCs, printers, and a gateway router.

Visual guide for Routers & Switches
Interactive Simulator Sandbox
Network Architecture:Step 3 โ€ข Bronze Tier
๐ŸŒ
Step 1 โ€ข Bronze (Level 1): Digital Connections - Device Linking

Identify classroom devices and establish wireless network connections from the tablet to the printer and laptop to smart TV.

In Progress
๐Ÿ’ป
Client PC
192.168.1.42
๐Ÿ“ก
Gateway Router
192.168.1.1
๐Ÿ“–
DNS Resolver
8.8.8.8
โ˜๏ธ
Cloud Web Server
104.22.45.9
Classroom Device Network Linking

Click the buttons below to establish network connections between classroom hardware:

๐Ÿ“ฆ Wire-Level Packet Dissector

Inspect the protocol headers and data payload inside a captured network frame:

Ethernet IISource MAC: 00:1A:2B:3C:4D:5E โž” Dest MAC: 00:1A:2B:99:88:77
Internet Protocol v4Src IP: 192.168.1.42 โž” Dst IP: 104.22.45.9 (TTL: 64)
Transmission Control ProtocolSrc Port: 52140 โž” Dst Port: 443 (HTTPS), Seq: 1001, ACK: 1
Encrypted TLS 1.3 Payload (1420 bytes):
7f a4 3c e8 91 2b 44 8a c9 e1 0f 42 88 bc 19 33
00 48 21 fb de ad be ef 12 34 56 78 9a bc de f0
[Encrypted Application Data Scrambled via AES-256-GCM]
๐Ÿงญ Network Protocol Quick Reference
DNS (Port 53)Translates URLs (names) to numerical IP addresses.
HTTP vs HTTPS (Ports 80 / 443)HTTP is unencrypted plain text; HTTPS encrypts data with TLS certificates.
TCP vs UDPTCP guarantees packet delivery with ACKs; UDP sends faster without resending lost packets.

Apply Simulator Skills โ€ข Try it yourself

Configure a School LAN

๐Ÿ”„Direct Simulator Transfer: Step 3 Tasks 7, 8 & 9

Now that you've practiced the virtual mechanics in the simulator above, apply those exact skills in your real computer environment:

๐ŸŒŸ Student Project GuideSuccess Criteria & WAGOLL (What A Good One Looks Like)โ–พ

๐ŸŽฏ Task Success Criteria (Rubric)

Foundation

Identifies a Wi-Fi router in a home or classroom.

Developing

Explains that a switch directs messages to specific local devices.

Secure (Goal)

Diagrams a complete school LAN connecting PCs, printers, and a gateway router.

Mastery

Explains how IP addresses identify individual devices on a local network.

๐Ÿ‘€ What A Good One Looks Like (WAGOLL)

๐Ÿ“
Save to Your Website Portfolio:

When you finish creating your project in your software, copy the share link or take a screenshot and publish it onto your student portfolio website!

Reflect

๐ŸŽฏ

Self-Assessment & Reflection

What happens to local network printing if the router loses its connection to the internet?

๐ŸŸขSecure Level

Diagrams a complete school LAN connecting PCs, printers, and a gateway router.

Learning check

Learning Check

What is the main job of a network ROUTER?

Select the correct answer:

Answer correctly to unlock the next level.

Excellent! Routers direct network traffic between different networks and the Internet.Remember: a router connects your local network to outside networks like the internet.
Teacher setup, curriculum links and progress descriptors

Spark support

Routine: See-Think-Wonder

Teacher notes: Facilitate the See-Think-Wonder routine for 2โ€“3 minutes. Encourage students to connect the prompt to Connection (Local area networks organize device traffic within buildings and communities.).

Achievement pathway

  • Foundation: Identifies a Wi-Fi router in a home or classroom.
  • Developing: Explains that a switch directs messages to specific local devices.
  • Secure: Diagrams a complete school LAN connecting PCs, printers, and a gateway router.
  • Mastering: Explains how IP addresses identify individual devices on a local network.

Curriculum links

Curriculum strand: LAN Architecture

Outcome: NETW.03.B.1.3 โ€” Model Local Area Network (LAN) hardware components including routers, switches, and network cables.

PYP: Connection ยท Local area networks organize device traffic within buildings and communities.

Learner profile: Thinker

Competency tags

  • LAN
  • Routers
  • Switches
  • IP Addresses
  • Local Networks

Gate support

Accessibility alternative: Students may verbally explain or point to the correct answer for "What is the main job of a network ROUTER?" with a teacher or teaching assistant.

Teacher override: allow

Back to top

Locked level

Level 4: Global Connections

Complete the previous learning check to unlock this next level.

Level 4

Global Connections

Differentiate between the physical global Internet infrastructure and web software services (WWW, DNS, Web Servers).

Learning objective

Students will distinguish between the physical global Internet network infrastructure and the World Wide Web software applications that run on it.

Let's Go!

Step media

Learn

The INTERNET is the physical network of connected computers, undersea cables, and routers worldwide. The WORLD WIDE WEB is a service of hyperlinked web pages and apps that run ON TOP of the Internet! In computing, global web services rely on worldwide internet infrastructure to connect humanity. As you explore the interactive Network Packet Simulator below, focus on how to trace how Domain Name System (DNS) translates web addresses (urls) into IP addresses.

Visual guide for Global Connections
Interactive Simulator Sandbox
Network Architecture:Step 4 โ€ข Bronze Tier
๐ŸŒ
Step 1 โ€ข Bronze (Level 1): Digital Connections - Device Linking

Identify classroom devices and establish wireless network connections from the tablet to the printer and laptop to smart TV.

In Progress
๐Ÿ’ป
Client PC
192.168.1.42
๐Ÿ“ก
Gateway Router
192.168.1.1
๐Ÿ“–
DNS Resolver
8.8.8.8
โ˜๏ธ
Cloud Web Server
104.22.45.9
Classroom Device Network Linking

Click the buttons below to establish network connections between classroom hardware:

๐Ÿ“ฆ Wire-Level Packet Dissector

Inspect the protocol headers and data payload inside a captured network frame:

Ethernet IISource MAC: 00:1A:2B:3C:4D:5E โž” Dest MAC: 00:1A:2B:99:88:77
Internet Protocol v4Src IP: 192.168.1.42 โž” Dst IP: 104.22.45.9 (TTL: 64)
Transmission Control ProtocolSrc Port: 52140 โž” Dst Port: 443 (HTTPS), Seq: 1001, ACK: 1
Encrypted TLS 1.3 Payload (1420 bytes):
7f a4 3c e8 91 2b 44 8a c9 e1 0f 42 88 bc 19 33
00 48 21 fb de ad be ef 12 34 56 78 9a bc de f0
[Encrypted Application Data Scrambled via AES-256-GCM]
๐Ÿงญ Network Protocol Quick Reference
DNS (Port 53)Translates URLs (names) to numerical IP addresses.
HTTP vs HTTPS (Ports 80 / 443)HTTP is unencrypted plain text; HTTPS encrypts data with TLS certificates.
TCP vs UDPTCP guarantees packet delivery with ACKs; UDP sends faster without resending lost packets.

Apply Simulator Skills โ€ข Try it yourself

Trace a Web Page Request

๐Ÿ”„Direct Simulator Transfer: Step 4 Tasks 10, 11 & 12

Now that you've practiced the virtual mechanics in the simulator above, apply those exact skills in your real computer environment:

๐ŸŒŸ Student Project GuideSuccess Criteria & WAGOLL (What A Good One Looks Like)โ–พ

๐ŸŽฏ Task Success Criteria (Rubric)

Foundation

Recognizes that web pages are stored on computers called servers.

Developing

Explains the difference between the Internet (hardware network) and the Web (pages/content).

Secure (Goal)

Traces how Domain Name System (DNS) translates web addresses (urls) into IP addresses.

Mastery

Explains client-server web requests across international data pathways.

๐Ÿ‘€ What A Good One Looks Like (WAGOLL)

๐Ÿ“
Save to Your Website Portfolio:

When you finish creating your project in your software, copy the share link or take a screenshot and publish it onto your student portfolio website!

Reflect

๐ŸŽฏ

Self-Assessment & Reflection

Why do we need DNS servers to translate web names like Google.com into numerical IP addresses?

๐ŸŸขSecure Level

Traces how Domain Name System (DNS) translates web addresses (urls) into IP addresses.

Learning check

Learning Check

What is the role of a DNS (Domain Name System) server?

Select the correct answer:

Answer correctly to unlock the next level.

Great job! DNS acts like an internet phonebook, turning web addresses into IP numbers.Remember: DNS translates website names (like example.com) into IP addresses.
Teacher setup, curriculum links and progress descriptors

Spark support

Routine: Chalk Talk

Teacher notes: Facilitate the Chalk Talk routine for 2โ€“3 minutes. Encourage students to connect the prompt to Change (Global web services rely on worldwide internet infrastructure to connect humanity.).

Achievement pathway

  • Foundation: Recognizes that web pages are stored on computers called servers.
  • Developing: Explains the difference between the Internet (hardware network) and the Web (pages/content).
  • Secure: Traces how Domain Name System (DNS) translates web addresses (urls) into IP addresses.
  • Mastering: Explains client-server web requests across international data pathways.

Curriculum links

Curriculum strand: Web & Internet Systems

Outcome: NETW.04.B.1.4 โ€” Differentiate between the physical global Internet infrastructure and web software services (WWW, DNS, Web Servers).

PYP: Change ยท Global web services rely on worldwide internet infrastructure to connect humanity.

Learner profile: Principled

Competency tags

  • Internet
  • World Wide Web
  • DNS
  • Web Servers
  • Infrastructure

Gate support

Accessibility alternative: Students may verbally explain or point to the correct answer for "What is the role of a DNS (Domain Name System) server?" with a teacher or teaching assistant.

Teacher override: allow

Back to top

Locked level

Level 5: Packet Switching

Complete the previous learning check to unlock this next level.

Level 5

Packet Switching

Analyze packet switching, IP routing, and communication protocols (TCP/IP, HTTP/HTTPS).

Learning objective

Students will analyze how data files are broken into numbered packets, routed independently across networks, and reassembled using protocols.

Let's Go!

Step media

Learn

Data transmitted across networks is split into tiny pieces called PACKETS. Each packet has a HEADER containing sender/receiver IP addresses and sequence numbers. Routers send packets via different pathways, and TCP reassembles them at the end! In computing, standardized protocols govern how data is split, routed, and verified across global networks. As you explore the interactive Network Packet Simulator below, focus on how to simulate packet switching where packets take different network routes and reassemble at the destination.

Visual guide for Packet Switching
Interactive Simulator Sandbox
Network Architecture:Step 5 โ€ข Bronze Tier
๐ŸŒ
Step 1 โ€ข Bronze (Level 1): Digital Connections - Device Linking

Identify classroom devices and establish wireless network connections from the tablet to the printer and laptop to smart TV.

In Progress
๐Ÿ’ป
Client PC
192.168.1.42
๐Ÿ“ก
Gateway Router
192.168.1.1
๐Ÿ“–
DNS Resolver
8.8.8.8
โ˜๏ธ
Cloud Web Server
104.22.45.9
Classroom Device Network Linking

Click the buttons below to establish network connections between classroom hardware:

๐Ÿ“ฆ Wire-Level Packet Dissector

Inspect the protocol headers and data payload inside a captured network frame:

Ethernet IISource MAC: 00:1A:2B:3C:4D:5E โž” Dest MAC: 00:1A:2B:99:88:77
Internet Protocol v4Src IP: 192.168.1.42 โž” Dst IP: 104.22.45.9 (TTL: 64)
Transmission Control ProtocolSrc Port: 52140 โž” Dst Port: 443 (HTTPS), Seq: 1001, ACK: 1
Encrypted TLS 1.3 Payload (1420 bytes):
7f a4 3c e8 91 2b 44 8a c9 e1 0f 42 88 bc 19 33
00 48 21 fb de ad be ef 12 34 56 78 9a bc de f0
[Encrypted Application Data Scrambled via AES-256-GCM]
๐Ÿงญ Network Protocol Quick Reference
DNS (Port 53)Translates URLs (names) to numerical IP addresses.
HTTP vs HTTPS (Ports 80 / 443)HTTP is unencrypted plain text; HTTPS encrypts data with TLS certificates.
TCP vs UDPTCP guarantees packet delivery with ACKs; UDP sends faster without resending lost packets.

Apply Simulator Skills โ€ข Try it yourself

Route Data Packets

๐Ÿ”„Direct Simulator Transfer: Step 5 Tasks 13, 14 & 15

Now that you've practiced the virtual mechanics in the simulator above, apply those exact skills in your real computer environment:

๐ŸŒŸ Student Project GuideSuccess Criteria & WAGOLL (What A Good One Looks Like)โ–พ

๐ŸŽฏ Task Success Criteria (Rubric)

Foundation

Understands that large digital files are split into smaller pieces to travel over networks.

Developing

Explains how packet headers contain sender/recipient IP addresses and sequence numbers.

Secure (Goal)

Simulates packet switching where packets take different network routes and reassemble at the destination.

Mastery

Analyzes how TCP detects lost packets and requests re-transmission.

๐Ÿ‘€ What A Good One Looks Like (WAGOLL)

๐Ÿ“
Save to Your Website Portfolio:

When you finish creating your project in your software, copy the share link or take a screenshot and publish it onto your student portfolio website!

Reflect

๐ŸŽฏ

Self-Assessment & Reflection

Why is packet switching more reliable than sending a whole file down a single fixed wire?

๐ŸŸขSecure Level

Simulates packet switching where packets take different network routes and reassemble at the destination.

Learning check

Learning Check

What happens to a file when it is sent across the internet?

Select the correct answer:

Answer correctly to unlock the next level.

Awesome! Files are broken into small data packets that travel independently across routers.Remember: network data is divided into packets for efficient routing.
Teacher setup, curriculum links and progress descriptors

Spark support

Routine: See-Think-Wonder

Teacher notes: Facilitate the See-Think-Wonder routine for 2โ€“3 minutes. Encourage students to connect the prompt to Perspective (Standardized protocols govern how data is split, routed, and verified across global networks.).

Achievement pathway

  • Foundation: Understands that large digital files are split into smaller pieces to travel over networks.
  • Developing: Explains how packet headers contain sender/recipient IP addresses and sequence numbers.
  • Secure: Simulates packet switching where packets take different network routes and reassemble at the destination.
  • Mastering: Analyzes how TCP detects lost packets and requests re-transmission.

Curriculum links

Curriculum strand: Network Protocols

Outcome: NETW.05.B.1.5 โ€” Analyze packet switching, IP routing, and communication protocols (TCP/IP, HTTP/HTTPS).

PYP: Perspective ยท Standardized protocols govern how data is split, routed, and verified across global networks.

Learner profile: Knowledgeable

Competency tags

  • Packets
  • Packet Switching
  • TCP/IP
  • Protocols
  • Routing

Gate support

Accessibility alternative: Students may verbally explain or point to the correct answer for "What happens to a file when it is sent across the internet?" with a teacher or teaching assistant.

Teacher override: allow

Back to top

Locked level

Level 6: Encryption & Cloud

Complete the previous learning check to unlock this next level.

Level 6

Encryption & Cloud

Evaluate network security measures (firewalls, HTTPS encryption, cloud storage, authentication).

Learning objective

Students will evaluate network security mechanisms, public key encryption (HTTPS), firewalls, and distributed cloud architecture.

Let's Go!

Step media

Learn

Network security protects connected systems. FIREWALLS block unauthorized network traffic, ENCRYPTION (HTTPS) scrambles data in transit so only the recipient can read it, and CLOUD COMPUTING stores data on secure distributed server banks! In computing, cybersecurity protocols and cloud architectures protect digital infrastructure and data privacy. As you explore the interactive Network Packet Simulator below, focus on how to demonstrate how encryption scrambles network data so eavesdroppers cannot read it.

Visual guide for Encryption & Cloud
Interactive Simulator Sandbox
Network Architecture:Step 6 โ€ข Bronze Tier
๐ŸŒ
Step 1 โ€ข Bronze (Level 1): Digital Connections - Device Linking

Identify classroom devices and establish wireless network connections from the tablet to the printer and laptop to smart TV.

In Progress
๐Ÿ’ป
Client PC
192.168.1.42
๐Ÿ“ก
Gateway Router
192.168.1.1
๐Ÿ“–
DNS Resolver
8.8.8.8
โ˜๏ธ
Cloud Web Server
104.22.45.9
Classroom Device Network Linking

Click the buttons below to establish network connections between classroom hardware:

๐Ÿ“ฆ Wire-Level Packet Dissector

Inspect the protocol headers and data payload inside a captured network frame:

Ethernet IISource MAC: 00:1A:2B:3C:4D:5E โž” Dest MAC: 00:1A:2B:99:88:77
Internet Protocol v4Src IP: 192.168.1.42 โž” Dst IP: 104.22.45.9 (TTL: 64)
Transmission Control ProtocolSrc Port: 52140 โž” Dst Port: 443 (HTTPS), Seq: 1001, ACK: 1
Encrypted TLS 1.3 Payload (1420 bytes):
7f a4 3c e8 91 2b 44 8a c9 e1 0f 42 88 bc 19 33
00 48 21 fb de ad be ef 12 34 56 78 9a bc de f0
[Encrypted Application Data Scrambled via AES-256-GCM]
๐Ÿงญ Network Protocol Quick Reference
DNS (Port 53)Translates URLs (names) to numerical IP addresses.
HTTP vs HTTPS (Ports 80 / 443)HTTP is unencrypted plain text; HTTPS encrypts data with TLS certificates.
TCP vs UDPTCP guarantees packet delivery with ACKs; UDP sends faster without resending lost packets.

Apply Simulator Skills โ€ข Try it yourself

Audit Network Security Setup

๐Ÿ”„Direct Simulator Transfer: Step 6 Tasks 16, 17 & 18

Now that you've practiced the virtual mechanics in the simulator above, apply those exact skills in your real computer environment:

๐ŸŒŸ Student Project GuideSuccess Criteria & WAGOLL (What A Good One Looks Like)โ–พ

๐ŸŽฏ Task Success Criteria (Rubric)

Foundation

Identifies the padlock icon indicating a secure HTTPS website connection.

Developing

Explains how firewalls filter unauthorized network traffic.

Secure (Goal)

Demonstrates how encryption scrambles network data so eavesdroppers cannot read it.

Mastery

Evaluates cloud computing infrastructure vulnerabilities and multi-factor authentication systems.

๐Ÿ‘€ What A Good One Looks Like (WAGOLL)

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Reflect

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Self-Assessment & Reflection

How does public key encryption protect sensitive personal data transmitted across public Wi-Fi networks?

๐ŸŸขSecure Level

Demonstrates how encryption scrambles network data so eavesdroppers cannot read it.

Learning check

Learning Check

What does HTTPS with a padlock icon in your browser indicate?

Select the correct answer:

Answer correctly to complete this strand.

Outstanding! HTTPS indicates that your network connection is encrypted and protected against eavesdropping.Remember: HTTPS uses encryption to secure data transmitted over the internet.
Teacher setup, curriculum links and progress descriptors

Spark support

Routine: Compass Points

Teacher notes: Facilitate the Compass Points routine for 2โ€“3 minutes. Encourage students to connect the prompt to Reflection (Cybersecurity protocols and cloud architectures protect digital infrastructure and data privacy.).

Achievement pathway

  • Foundation: Identifies the padlock icon indicating a secure HTTPS website connection.
  • Developing: Explains how firewalls filter unauthorized network traffic.
  • Secure: Demonstrates how encryption scrambles network data so eavesdroppers cannot read it.
  • Mastering: Evaluates cloud computing infrastructure vulnerabilities and multi-factor authentication systems.

Curriculum links

Curriculum strand: Cybersecurity & Cloud

Outcome: NETW.06.B.1.6 โ€” Evaluate network security measures (firewalls, HTTPS encryption, cloud storage, authentication).

PYP: Reflection ยท Cybersecurity protocols and cloud architectures protect digital infrastructure and data privacy.

Learner profile: Reflective

Competency tags

  • Cybersecurity
  • Encryption
  • Firewalls
  • HTTPS
  • Cloud Computing

Gate support

Accessibility alternative: Students may verbally explain or point to the correct answer for "What does HTTPS with a padlock icon in your browser indicate?" with a teacher or teaching assistant.

Teacher override: allow

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