Foundations

What a network is, hosts, NICs, MAC vs IP — orientation before the layers and protocols.

1. 1.What a network actually is

   8 min · Take the quiz

2. 2.LAN, WAN, MAN — networks by scale

   7 min · Take the quiz

3. 3.A whirlwind tour of network devices

   10 min · Take the quiz

4. 4.Broadcast vs collision domains

   8 min · Take the quiz

5. 5.Bandwidth, latency, throughput, jitter

   9 min · Take the quiz