Week 8 Checkpoint

Covers Lessons 1 through 3

Spans all three Week 8 lessons — the physics and vocabulary of the shared medium, the controller architecture that scales it, and the security that makes it safe to use.

Topics covered

• RF behaviour, bands, and channel planning
• Service sets and association
• Split-MAC, CAPWAP, and AP modes
• WLAN-to-VLAN mapping
• WPA2 and WPA3
• PSK versus 802.1X
• WLC GUI configuration

Every question here is answerable from the first-party notes of the lessons above. You commit to an answer before you see whether it was right.

This quiz is a Week 8 milestone in its own right. Passing it does not change the completion state of any individual lesson, and you do not need it to finish the lessons it covers.

Weekly checkpoint

Week 8 Checkpoint

12 questions covering Lessons 1 through 3. Answer each one before you see whether you were right.

Question 1 of 12

1. Which 2.4 GHz channels are nonoverlapping in North America?

2. Compared with 2.4 GHz, what does 5 GHz give you and what does it cost?

3. Two clients can each hear the AP but cannot hear each other. What is this called, and what optionally mitigates it?

4. Why are neighbouring AP cells deliberately given about 10 to 15 percent overlap?

5. What distinguishes an ESS from a BSS?

6. What does DHCP option 43 do in a lightweight-AP deployment?

7. Which AP mode allows a branch to keep switching client traffic locally if the CAPWAP path to the WLC fails?

8. How does a WLAN end up placing its clients in a particular VLAN?

9. Which encryption belongs to which standard?

10. What decides whether a WLAN is Personal or Enterprise?

11. What problem does WPA3-Personal's SAE address that WPA2-Personal has?

12. Why are a hidden SSID and MAC filtering not substitutes for WPA2 or WPA3?

Back to Lesson 3 Continue to Week 9

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