JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing (2023) — Question 19

Which two statements are correct about the behavior of IS-IS metrics? (Choose two.)

Answer options

• A. Wide metrics enable interfaces to advertise metrics larger than 63.
• B. By default, the metric of an interface is calculated based on the speed of the interface.
• C. Wide metrics enable an interface to advertise different metrics at Level 1 and Level 2.
• D. By default, all physical interfaces have a metric of 10.

Correct answer: A, D

Explanation

Option A is correct because wide metrics indeed allow for metrics larger than 63, which is a feature of IS-IS. Option D is also correct as all physical interfaces default to a metric value of 10. Options B and C are incorrect; while interface speed can influence metrics, it is not the sole determinant by default, and wide metrics do not allow different metrics for Level 1 and Level 2.