Continue your lesson
Follow traffic from the endpoint through each device, protocol, and service in the path.
Block 1 of 4Understand MAC flooding
Current · 15 min
Understand MAC flooding
Optional concept notes
MAC flooding
Overloads a switch table to cause unknown-unicast flooding.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Block 2 of 4Understand VLAN hopping
7 min
Understand VLAN hopping
Optional concept notes
VLAN hopping
Gains unauthorized access to traffic in another VLAN.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Block 3 of 4Understand ARP poisoning
8 min
Understand ARP poisoning
Optional concept notes
ARP poisoning
Sends false address mappings to redirect local network traffic.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Block 4 of 4Understand Evil twin
7 min
Understand Evil twin
Optional concept notes
Evil twin
Impersonates a trusted wireless network with a rogue access point.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
Your lesson stays open here while the provider opens in another tab. Choose one source; the notes above are optional.
Practice the reasoning here
Sketch a small network or packet path. Predict the expected state, introduce one fault, and identify the observation that isolates it.
- State the expected result before changing or testing anything.
- Name the observation, command, log, or report that would confirm it.
- Explain why the closest alternative does not fit the same requirement.
Check the whole objective
This unlocks objective 4.2 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.