DSA Factory
Free Network basics lessonsNetwork basics · Stage 1 · Layers and devices · Step 1

Layers

Learn the layers of the TCP/IP and OSI models, and what each is responsible for. About 13 minutes.

Quick check

Which layer of the Internet model is responsible for getting a packet from one network to another, across many routers?

  1. AThe network layer
  2. BThe transport layer
  3. CThe link layer
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The network layer. IP addressing and routing live here.

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4 questions on this idea

Short questions that apply the idea to new cases: trace it, work out a number, put steps in order. A wrong answer explains itself.

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