Switching & VLAN Fundamentals

Covers Lesson 1 and Lesson 2

Checks the two behaviours the rest of the week refines: how a switch decides where a frame goes, and how a VLAN changes what 'everywhere' means.

Topics covered

• Learning from the source MAC and the three forwarding actions
• Aging, relearning, and reading show mac address-table
• VLANs as broadcast domains and access-port membership
• Why inter-VLAN traffic needs a Layer 3 hop

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 3 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.

Section quiz

Switching & VLAN Fundamentals

8 questions covering Lesson 1 and Lesson 2. Answer each one before you see whether you were right.

Question 1 of 8

1. Which address does a switch use to populate its MAC address table, and what does it map that address to?

2. A switch receives a unicast frame whose destination MAC is not in its table. What does it do?

3. What is the Cisco default aging time for a dynamic MAC address table entry?

4. A host is recabled from Gi0/2 to Gi0/4 and then sends a frame. What happens to the MAC table?

5. An eight-port switch has eight hosts connected and no VLANs configured. How many broadcast domains exist?

6. How many data VLANs does an access port carry, and what decides its membership?

7. Host A is in VLAN 10 with 10.10.10.11/24. Host D is in VLAN 20 with 10.10.10.14/24. They share one switch and there is no router. Can A ping D?

8. What is required for a host in VLAN 10 to reach a host in VLAN 20?

Back to Lesson 2 Continue to Lesson 3

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