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Computer ScienceIntermediateRevision 1

Computer Networks

Follow one browser request through subnet decisions, DNS lookup, TCP connection setup, and the final HTTP exchange.

5 stepsAbout 90 minutesExplain how addressing, naming, transport, and application protocols cooperate.

A lab, not a slideshow

How each chapter works

1 · Predict

Commit to what you think the system will do before pressing play.

2 · Observe

Change one variable and watch the state, algorithm, or model respond.

3 · Explain

State the invariant or principle, then prove it in the checkpoint.

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Next: Divide an IPv4 network

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  1. Next suggested
    Step 1

    Step 1Experiment

    Divide an IPv4 network

    Predict first, change one input, then explain the state change you observe.

    Open simulation
  2. Step 2

    Step 2Experiment

    Resolve a domain name

    Predict first, change one input, then explain the state change you observe.

    Open simulation
  3. Step 3

    Step 3Experiment

    Establish a TCP connection

    Predict first, change one input, then explain the state change you observe.

    Open simulation
  4. Step 4

    Step 4Experiment

    Trace an HTTP exchange

    Predict first, change one input, then explain the state change you observe.

    Open simulation
  5. Step 5

    Step 5Prove

    Computer networks checkpoint

    Use the evidence from the chapter to pass a server-scored knowledge check.

    Take knowledge check