Lesson 2: Networking Fundamentals
Week of Tue, Sep 22 · lesson closes Mon, Sep 28
Take Meerk's quiz for Lesson 2
This lesson's items
Exact due times are in Canvas.
Watch — Professor Messer
Watch — Professor Messer: Networking (220-1201)
Free, independent educational resource. Not affiliated with or endorsed by CompTIA. Watch, then read the notes below.
Know these cold
- OSI model 7 layers — Physical, Data Link, Network, Transport, Session, Presentation, Application.
- IPv4 32-bit dotted decimal; private ranges 10/8, 172.16/12, 192.168/16; CIDR notation.
- TCP (reliable, ordered, connection-oriented) vs. UDP (fast, connectionless, no retransmission).
Meerk's quiz — open the Lesson 2 gate
10 questions, no time limit. 85% on your first attempt in a 24-hour window opens the gate. Retakes inside the window are practice — they help you learn, they don't count. Work alone; the point is to know it, not to have seen it.
Dinner Table Question
Ask at home: How does your home router know which device to deliver each web page to?
En español: ¿Cómo sabe tu router a cuál dispositivo entregar cada página web?