Internet Protocols & Routing – AP CSP | ShowMeClass

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Internet Protocols & Routing

AP CSP · Unit 2: The Internet

Learning Objectives

Understand TCP/IP protocol layers

Explain how packets are routed

Describe DNS, HTTP, and IP addressing

Identify fault-tolerant network design

TCP/IP Layers

Application: HTTP, DNS, FTP — user-facing protocols

Transport: TCP/UDP — reliable delivery, port numbers

Internet: IP — addressing & routing across networks

Network Access: Ethernet, Wi-Fi — physical transmission

Key Terms

Packet: Chunk of data with header info
Router: Forwards packets between networks
DNS: Domain Name System — translates names to IPs
Redundancy: Multiple paths = fault tolerance

Colors

Routers

Endpoints (devices)

Active path

Packet in transit

TCP/IPRoutingDNS

Protocol:HTTP

Hops:0

Packets:0 / 0

Status:Ready

TCP/IP Packet Structure

Click "Send" to see packet routing

Number of Packets 4

Animation Speed 1x

Protocol

Scenario

Protocol Info

Quick Quiz▼

1. DNS is responsible for:

Encrypting data Translating domain names to IP addresses Compressing files Storing web pages

2. A fault-tolerant network has:

Only one path between nodes Multiple redundant paths No routers Faster processors

3. TCP ensures:

Fastest possible delivery Reliable, ordered delivery of packets Data compression Wireless connectivity