Refer to the exhibit. What commands are needed to add a subinterface to Ethernet0/0 on R1 to allow for VLAN 20, with IP address 10.20.20.1/24?

The correct answer is B. R1(config)#interface ethernet0/0.20. For a Router on a stick, you need to: 1. create a sub-interface 2. encapsulate dot1q with the VLAN ID 3. Assign an IP address

Submitted by yaw92· Mar 5, 2026IP Connectivity

Question

Exhibits

Options

AR1(config)#interface ethernet0/0
BR1(config)#interface ethernet0/0.20
CR1(config)#interface ethernet0/0.20
DR1(config)#interface ethernet0/0

How the community answered

(68 responses)

A
3% (2)
B
84% (57)
C
4% (3)
D
9% (6)

Explanation

For a Router on a stick, you need to: 1. create a sub-interface 2. encapsulate dot1q with the VLAN ID 3. Assign an IP address

Topics

#Cisco subinterfaces#802.1Q encapsulation#Router-on-a-stick#Cisco IOS interface configuration

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