JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 81

What is the default hello interval on an OSPF interface?

Answer options

• A. 10 seconds
• B. 20 seconds
• C. 30 seconds
• D. 60 seconds

Correct answer: A

Explanation

The default hello interval for OSPF interfaces is indeed 10 seconds, which allows routers to send hello packets frequently to establish and maintain neighbor relationships. The other options, 20, 30, and 60 seconds, do not reflect the standard configuration for OSPF and would lead to slower neighbor discovery and potential network issues.