QUESTION 1 / 20 · LAYERS & MODELSEasy
How many layers does the OSI reference model have?
ENCAPSULATION BUILDER · STEP 1 OF 4
Wrap a web request, layer by layer
Going down the stack, each layer adds a header in front. At the other end, each layer strips its own header and passes the rest up.
HTTP requestGET /index.html Host: example.com
MESSAGE120 bytesjust the data
Application dataThe browser builds an HTTP request. Nothing knows yet how it will travel.
What this computer networks test covers, in short
Twenty multiple-choice questions at introductory undergraduate level, four on each of five topics: layers and models, IP addressing and routing, TCP and UDP, DNS and HTTP, and security and wireless. They test how data gets from one machine to another across the internet.
Addressing questions use IPv4 unless they say otherwise. The test is our own and not normed.
By What's Your IQ · Reviewed 5 Oct 2026- Format
- 20 multiple-choice questions
- Level
- Introductory undergraduate
- Bonus
- Layer-by-layer encapsulation builder
- Model used
- 4-layer TCP/IP, with OSI numbers noted