Continue your lesson
Follow traffic from the endpoint through each device, protocol, and service in the path.
Block 1 of 2Compare IEEE 802.1X · Switch port security
Current · 15 min
Compare IEEE 802.1X · Switch port security
Optional concept notes
IEEE 802.1X
Controls port access using a supplicant authenticator and authentication server.
Switch port security
Limits which source MAC addresses a switchport will accept.
Cross-certificationCCNA ↔ Net+
Switch port security
The core idea stays the same. The surrounding objective changes the evidence, decision, or task the exam asks for.
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 2Compare Access control list · Screened subnet
11 min
Compare Access control list · Screened subnet
Optional concept notes
Access control list
Permits or denies traffic based on ordered matching rules.
Screened subnet
Isolates public-facing services between security boundaries.
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 4.3 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.