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refactor: split curriculum by category
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Lines changed: 833 additions & 752 deletions

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‎src/data/curriculum.ts‎

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‎src/data/curriculum/addressing.ts‎

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import type { CurriculumModule } from "@/types/curriculum";
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import { module } from "./shared";
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export const networkLayerConceptModules: CurriculumModule[] = [
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["ip-address", "IP address", "A logical address for network delivery."],
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["ipv4-addressing", "IPv4 addressing", "32-bit addresses written as four octets."],
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["ipv6", "IPv6", "128-bit addressing for modern networks."],
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["subnet-mask", "Subnet mask", "Marks network bits and host bits."],
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["cidr", "CIDR", "Prefix notation for subnet size."],
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["default-gateway", "Default gateway", "Where packets go when the destination is remote."],
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["routing-basics", "Routing basics", "How routers choose a next hop for packets."],
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["icmp", "ICMP", "Control messages used for errors and diagnostics."],
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["ping", "Ping", "Tests reachability with ICMP echo."],
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["traceroute", "Traceroute", "Reveals hops along a path."],
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["routing-table", "Routing table", "Rules routers use to choose next hops."],
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["static-routing", "Static routing", "Manually configured network paths."],
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["dynamic-routing", "Dynamic routing", "Routers learn paths from protocols."],
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["nat", "NAT", "Translates private addresses to public addresses."],
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["fragmentation", "Fragmentation", "Splits oversized packets for smaller links."]
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].map(([id, title, shortDescription]) =>
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module({
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id,
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title,
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shortDescription,
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category: "Network Layer",
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difficulty: id === "dynamic-routing" || id === "nat" ? "intermediate" : "beginner",
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estimatedTime: "10 min",
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prerequisites: ["ip-address"],
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relatedModules: ["subnet-visualizer", "routing-visualizer"],
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osiLayer: 3,
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protocols: title.includes("IPv4")
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? ["IPv4"]
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: title.includes("IPv6")
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? ["IPv6"]
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: title === "ICMP"
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? ["ICMP"]
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: [],
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type: ["IPv4 addressing", "IPv6", "ICMP"].includes(title) ? "protocol" : "concept"
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})
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);
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export const networkLayerLabModules: CurriculumModule[] = [
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module({
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id: "subnet-visualizer",
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title: "Subnet Visualizer",
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shortDescription: "Split an IPv4 address into network and host bits.",
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category: "Network Layer",
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difficulty: "beginner",
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estimatedTime: "12 min",
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prerequisites: ["binary-converter", "cidr"],
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relatedModules: ["default-gateway", "routing-visualizer"],
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osiLayer: 3,
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protocols: ["IPv4"],
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type: "lab"
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}),
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module({
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id: "routing-visualizer",
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title: "Routing Visualizer",
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shortDescription: "Watch packets follow the lowest-cost path.",
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category: "Network Layer",
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difficulty: "beginner",
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estimatedTime: "10 min",
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prerequisites: ["ip-address", "router"],
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relatedModules: ["routing-table", "traceroute"],
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osiLayer: 3,
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protocols: ["IPv4"],
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type: "lab"
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})
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];

‎src/data/curriculum/application.ts‎

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import type { CurriculumModule } from "@/types/curriculum";
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import { module } from "./shared";
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export const upperLayerConceptModules: CurriculumModule[] = [
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["sessions", "Sessions", "State that links related exchanges.", 5],
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[
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"connection-management",
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"Connection management",
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"Creating, maintaining, and ending sessions.",
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5
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],
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["tls-session-basics", "TLS session basics", "Secure session setup at a high level.", 5],
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["presentation-encoding", "Encoding", "Representing data in agreed formats.", 6],
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["compression", "Compression", "Reducing payload size before transfer.", 6],
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["encryption", "Encryption", "Protecting content from observers.", 6],
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["serialization", "Serialization", "Turning objects into transferable bytes.", 6]
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].map(([id, title, shortDescription, osiLayer]) =>
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module({
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id: String(id),
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title: String(title),
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shortDescription: String(shortDescription),
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category: Number(osiLayer) === 5 ? "Session Layer" : "Presentation Layer",
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difficulty: "intermediate",
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estimatedTime: "8 min",
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prerequisites: ["tcp-basics"],
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relatedModules: ["tls-basics"],
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osiLayer: Number(osiLayer),
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type: "concept"
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})
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);
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export const applicationProtocolModules: CurriculumModule[] = [
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["dns-basics", "DNS", "Turns names into addresses.", ["DNS"]],
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["dhcp", "DHCP", "Automatically assigns host network settings.", ["DHCP"]],
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["http-basics", "HTTP", "Request and response protocol for the web.", ["HTTP"]],
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["https-tls", "HTTPS/TLS", "HTTP protected by TLS encryption.", ["HTTPS", "TLS"]],
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["ssh", "SSH", "Secure remote shell access.", ["SSH"]],
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["smtp", "SMTP", "Email transfer between mail servers.", ["SMTP"]],
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["ftp-sftp", "FTP/SFTP", "File transfer protocols.", ["FTP", "SFTP"]],
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["ntp", "NTP", "Keeps system clocks synchronized.", ["NTP"]]
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].map(([id, title, shortDescription, protocols]) =>
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module({
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id: String(id),
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title: String(title),
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shortDescription: String(shortDescription),
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category: "Application Layer",
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difficulty: "beginner",
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estimatedTime: "10 min",
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prerequisites: ["client-server-model", "ports"],
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relatedModules: ["dns-flow", "tcp-handshake"],
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osiLayer: 7,
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protocols: protocols as string[],
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type: "protocol"
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})
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);
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export const applicationLabModules: CurriculumModule[] = [
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module({
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id: "dns-flow",
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title: "DNS Flow Visualizer",
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shortDescription: "Follow a recursive lookup from browser to answer.",
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category: "Application Layer",
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difficulty: "beginner",
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estimatedTime: "10 min",
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prerequisites: ["dns-basics", "client-server-model"],
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relatedModules: ["http-basics", "routing-visualizer"],
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osiLayer: 7,
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protocols: ["DNS"],
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type: "lab"
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}),
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module({
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id: "osi-model",
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title: "OSI Model Visualizer",
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shortDescription: "Inspect layers and encapsulation from data to bits.",
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category: "OSI Map",
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difficulty: "beginner",
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estimatedTime: "10 min",
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prerequisites: ["communication-basics"],
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relatedModules: ["tcp-handshake", "routing-visualizer"],
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type: "lab"
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})
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];

‎src/data/curriculum/cloud.ts‎

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import type { CurriculumModule } from "@/types/curriculum";
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import { module } from "./shared";
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export const cloudModules: CurriculumModule[] = [
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["load-balancer", "Load balancer", "Distributes requests across services."],
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["cdn", "CDN", "Caches content close to users."],
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["reverse-proxy", "Reverse proxy", "Fronts services and forwards requests."],
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["api-gateway", "API gateway", "Central entry point for APIs."],
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["vpc", "VPC", "A private cloud network boundary."],
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["cloud-subnets", "Subnets in cloud", "Address ranges inside a cloud network."],
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["security-groups", "Security groups", "Cloud-native traffic rules."],
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["zero-trust", "Zero Trust basics", "Verify access continuously instead of trusting location."]
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].map(([id, title, shortDescription]) =>
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module({
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id,
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title,
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shortDescription,
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category: "Cloud & Modern Networks",
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difficulty: "intermediate",
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estimatedTime: "10 min",
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prerequisites: ["subnet-visualizer", "firewalls"],
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relatedModules: ["vpc", "security-groups"],
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type: "concept"
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})
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);

‎src/data/curriculum/devices.ts‎

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import type { CurriculumModule } from "@/types/curriculum";
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import { module } from "./shared";
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export const deviceModules: CurriculumModule[] = [
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["host", "Host", "An endpoint that sends or receives data.", "Devices", 1],
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["nic", "NIC", "Hardware that connects a host to a network.", "Devices", 1],
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["hub", "Hub", "A simple repeater for physical signals.", "Devices", 1],
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["switch", "Switch", "Forwards Ethernet frames inside a LAN.", "Devices", 2],
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["router", "Router", "Moves packets between networks.", "Devices", 3],
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["access-point", "Access point", "Connects wireless clients to a LAN.", "Devices", 2],
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["modem", "Modem", "Connects local networks to an ISP link.", "Devices", 1],
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["firewall", "Firewall", "Allows or blocks traffic by rule.", "Devices", 3],
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["gateway", "Gateway", "The next hop out of a local network.", "Devices", 3],
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["server", "Server", "Provides applications or resources to clients.", "Devices", 7]
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].map(([id, title, shortDescription, category, osiLayer]) =>
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module({
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id: String(id),
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title: String(title),
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shortDescription: String(shortDescription),
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category: String(category),
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difficulty: "beginner",
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estimatedTime: "5 min",
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prerequisites: ["communication-basics"],
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relatedModules: ["client-server-model"],
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osiLayer: Number(osiLayer),
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type: "concept"
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})
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);

‎src/data/curriculum/foundations.ts‎

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import type { CurriculumModule } from "@/types/curriculum";
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import { module } from "./shared";
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export const foundationModules: CurriculumModule[] = [
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module({
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id: "communication-basics",
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title: "What is communication?",
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shortDescription: "Two systems exchange meaning through agreed signals.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "6 min",
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prerequisites: [],
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relatedModules: ["client-server-model", "packet-switching"],
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type: "concept"
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}),
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module({
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id: "data-bits-bytes",
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title: "Data, bits, and bytes",
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shortDescription: "See how information becomes binary values.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "8 min",
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prerequisites: ["communication-basics"],
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relatedModules: ["binary-converter"],
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type: "concept"
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}),
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module({
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id: "binary-converter",
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title: "Binary Converter",
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shortDescription: "Convert decimal octets into binary bits.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "8 min",
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prerequisites: ["data-bits-bytes"],
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relatedModules: ["ipv4-addressing", "subnet-visualizer"],
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type: "tool"
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}),
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module({
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id: "bandwidth",
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title: "Bandwidth",
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shortDescription: "How much data a link can carry.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "7 min",
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prerequisites: ["data-bits-bytes"],
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relatedModules: ["throughput", "latency"],
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osiLayer: 1,
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type: "concept"
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}),
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module({
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id: "latency",
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title: "Latency",
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shortDescription: "How long a packet takes to arrive.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "7 min",
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prerequisites: ["packet-switching"],
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relatedModules: ["jitter", "traceroute"],
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type: "concept"
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}),
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module({
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id: "throughput",
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title: "Throughput",
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shortDescription: "The actual delivered data rate.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "7 min",
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prerequisites: ["bandwidth"],
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relatedModules: ["latency", "congestion-control"],
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type: "concept"
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}),
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module({
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id: "jitter",
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title: "Jitter",
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shortDescription: "Variation in packet delay.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "5 min",
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prerequisites: ["latency"],
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relatedModules: ["udp-basics", "wi-fi-congestion-lab"],
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type: "concept"
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}),
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module({
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id: "packet-switching",
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title: "Packet switching",
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shortDescription: "Data moves as small independent packets.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "8 min",
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prerequisites: ["communication-basics"],
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relatedModules: ["routing-visualizer", "circuit-switching"],
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type: "concept"
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}),
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module({
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id: "circuit-switching",
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title: "Circuit switching",
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shortDescription: "A dedicated path is reserved before communication.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "5 min",
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prerequisites: ["communication-basics"],
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relatedModules: ["packet-switching"],
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type: "concept"
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}),
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module({
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id: "client-server-model",
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title: "Client-server model",
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shortDescription: "Clients request resources from always-on services.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "6 min",
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prerequisites: ["communication-basics"],
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relatedModules: ["http-basics", "dns-basics"],
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type: "concept"
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}),
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module({
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id: "peer-to-peer-model",
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title: "Peer-to-peer model",
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shortDescription: "Hosts act as both clients and servers.",
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category: "Foundation",
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difficulty: "beginner",
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estimatedTime: "6 min",
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prerequisites: ["client-server-model"],
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relatedModules: ["ports"],
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type: "concept"
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})
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];

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