200-301 Question 241
Select 3A network engineer is configuring a switch with the following requirements:
- Multiple VLANs need to be supported across the connections between switches.
- Redundancy and load balancing are required for the uplink between two switches.
Which configuration steps should the engineer implement to meet these requirements?
- A
Configure the uplink ports on both switches as trunk ports.
- B
Create a Link Aggregation Group (LAG) for the uplink ports on both switches.
- C
Set the uplink ports on both switches to access mode.
- D
Assign the uplink ports to the default VLAN only.
- E
Enable 802.1Q encapsulation on the trunk ports.
Show answer and explanation
Correct answers: A, B, E
Explanation
To meet the requirements of supporting multiple VLANs and providing redundancy and load balancing, the uplink ports must be configured as trunk ports with 802.1Q encapsulation enabled. Additionally, creating a Link Aggregation Group (LAG) ensures redundancy and load balancing for the uplink. Access mode and restricting the uplinks to a single VLAN do not meet the stated requirements.
- A. Correct.
Correct: Trunk ports allow multiple VLANs to traverse the link, meeting the requirement to support multiple VLANs across switches.
- B. Correct.
Correct: A Link Aggregation Group (LAG) provides redundancy and load balancing by combining multiple physical links into one logical link.
- C. Incorrect.
Incorrect: Access mode restricts the port to a single VLAN, which does not meet the requirement of supporting multiple VLANs.
- D. Incorrect.
Incorrect: Assigning the uplink ports to the default VLAN only would not allow traffic from other VLANs to traverse the uplink.
- E. Correct.
Correct: 802.1Q encapsulation is required on trunk ports to properly tag VLAN traffic as it traverses the link.