BitWithBite
CCNA Networking Worksheet
🌐 Protocols and Models
SCORE___ / 20
NameClassDate
After this worksheet you can
Why protocols existOSI 7 layersTCP/IP 4 layersEncapsulation📚 Quick Recap
🎯 What you'll learn: Communication fundamentals, network protocols and their functions, the TCP/IP and OSI reference models, data encapsulation at each layer, Protocol Data Units (PDUs), and how Layer 2 and Layer 3 addresses work together.
🧠 Section A · Concept Check ● BEGINNER 4 × 1 = 4
1Rules for communication are:
2OSI has how many layers?
3The TCP/IP model has:
4Wrapping data with headers down the stack is:
🧮 Section B · Problem Solving ● INTERMEDIATE 2 + 3×3 = 11
5OSI layer 3 is the layer.
6OSI layer 2 is the link layer.
7List OSI layers 1-7.
8Map TCP/IP to OSI briefly.
9Name the PDU at layers 1-4.
🚀 Section C · Challenge ● CHALLENGE 5
10Why layered models?
💭 Reflection — the most useful thing I learned:
A ___/4 B ___/11 C ___/5 Total ___/20
Teacher's Signature
Parent's Signature
✂ answer key — fold or cut before handing out
1-A 2-A 3-A 4-A | 5 network 6 data 7 = Physical, Data Link, Network, Transport, Session, Presentation, Application 8 = App = 5-7, Transport = 4, Internet = 3, Network Access = 1-2 9 = Bits, frames, packets, segments | 10 = Standardization, interoperability, easier troubleshooting