JNCIP-ENT: Juniper Networks Certified Professional – Enterprise Routing (2023) — Question 16

In IS-IS, advertising PDUs with the overload-bit has which effect?

Answer options

• A. The local device will no longer be used for transit traffic.
• B. The IS-IS adjacencies enter the "new" state.
• C. The local device's PDUs are marked with a metric of 65535.
• D. The IS-IS adjacencies become passive.

Correct answer: A

Explanation

When the overload-bit is set in IS-IS, it indicates that the local device is unable to handle transit traffic, effectively preventing it from being used for that purpose. The other options do not accurately describe the impact of the overload-bit; for instance, the adjacencies do not necessarily enter a 'new' state or become passive, nor are the PDUs marked with a metric of 65535 as a direct result of the overload-bit being set.