JNCIP-DC: Juniper Networks Certified Professional – Data Center — Question 3

Your OSPF network consists of a mix of 1GbE and 10GbE interfaces. By default, all interfaces have the same cost in your OSPF network. You are asked to ensure that the 10GbE interfaces are more preferred when available.
In this scenario, which two statements would accomplish this behavior? (Choose two.)

Answer options

• A. You should define the reference bandwidth as 10G, which will assign the 1GbE interfaces a higher cost.
• B. You should manually assign the interface metric for each 10GbE interface to be higher than the 1GbE interfaces in your OSPF network.
• C. You should define the reference bandwidth as 1G, which will assign the 1GbE interfaces a higher cost.
• D. You should manually assign the interface metric for each 1GbE interface to be higher than the 10GbE interfaces in your OSPF network.

Correct answer: A, D

Explanation

Choosing option A is correct because setting the reference bandwidth to 10G will automatically assign a higher cost to 1GbE interfaces, making 10GbE more preferred. Option D is also correct as manually increasing the cost for 1GbE interfaces ensures that the 10GbE interfaces are preferred. Options B and C are incorrect because they either incorrectly prioritize 10GbE or do not achieve the desired effect of promoting 10GbE interfaces.