How many questions are in this quiz?

This quiz has 126 questions on Ethernet switching with VLANs and STP.

What format are the questions in?

Each question is multiple-choice with 4 options, and there is no timer.

Can I choose the number of questions and difficulty?

Yes. You can select your preferred question count and difficulty level before starting.

What topics are covered under VLANs and STP?

You’ll see VLAN basics, trunking and native VLAN behavior, plus STP concepts like root bridge election, port roles, and loop prevention.

What are common mistakes this quiz helps catch?

It targets mix-ups like access vs trunk behavior, native VLAN mismatches, and incorrect assumptions about STP roles, states, and tie-breakers.

Ethernet Switching: VLANs & STP Quiz

About this quiz

What you’ll practice

VLANs and STP are the backbone of stable Layer 2 networks, and this quiz targets the decisions you make on real switches. Expect a mixed set that moves from fundamentals (VLAN membership, trunks) to troubleshooting (unexpected blocking, VLAN leaks).

Each question uses 4 options and there’s no timer, so you can slow down and reason through port roles, path costs, and trunk behavior. Choose your question count and difficulty before you start to match quick reviews or deeper study sessions.

Common pitfalls to watch for

Many mistakes come from mixing up VLAN tagging vs. untagged/native VLAN behavior, or assuming STP behaves the same across PVST/RPVST/MST. Another frequent trap is overlooking how a single misconfigured trunk or root priority can reshape the entire topology.

Confusing access vs. trunk ports and when frames are tagged
Misreading STP port roles/states (root, designated, alternate; blocking vs. discarding)
Forgetting native VLAN mismatches and their side effects
Assuming the lowest priority always wins without checking MAC tie-breakers
Ignoring link cost changes when speed/port-channel settings differ

How difficulty is balanced

Difficulty is mixed on purpose: easy questions reinforce key definitions, while harder ones combine VLAN and STP concepts in the same scenario. If you select a higher difficulty, you’ll see more multi-step reasoning (e.g., root election plus port role outcomes) rather than pure memorization.