InterVLAN Routing Questions

Question 1

Checking the topology and configuration below.

Suppose all the computers are configured correctly with IP addresses and default gateways. But none of them can ping to the TUT router. Which commands would fix this problem?

A.
TUT(config-if)#interface fa0/0
TUT(config-if)#encapsulation dot1q
B.
TUT(config)#interface encapsulation dot1q
C.
Sw1(config)#interface fa0/10
Sw1(config)#switchport mode trunk
D.
Sw1(config)#interface fa0/10
Sw1(config)#switchport access vlan 2,3

Answer: C

Explanation

From the output of the “show vlan” command on Sw1, we learn that the Fa0/10 interface (which connects to TUT router) is in VLAN 1 (and it operates in access mode). This is not correct because TUT router is operating as the router-on-a-stick. Therefore the Fa0/10 interface on Sw1 must be configured as trunk.