03 - Implementing Campus LAN Connectivity

Question 1

What is VLAN tagging?

Answer 1

The sending switch adds another header (or tag) to the frame before sending it over the trunk. This extra VLAN header includes a VID so that the sending switch can list the VLAN ID and the receiving switch can identify the VLAN

Question 2

What are the VLAN tag fields?

Answer 2

• Type 16 bits
• Priority 3 bits
• Flag 1 bit
• VLAN ID 12 bits

Question 3

What is a Native VLAN?

Answer 3

untagged VLAN, an ethernet frame.

Question 4

What is a default VLAN?

Answer 4

VLAN 1, where switchports are put by default, cannot be deleted

Question 5

What happens if a port is in a VLAN, and that VLAN is deleted?

Answer 5

the port becomes inactive

Question 6

How do you check detailed VLAN info about a switchport?

Answer 6

show interfaces FastEthernet0/1 switchport