CCNA: Cisco Certified Network Associate — Question 248

The OSPF Hello protocol performs which of the following tasks? (Choose two.)

Answer options

• A. It provides dynamic neighbor discovery.
• B. It detects unreachable neighbors in 90 second intervals.
• C. It maintains neighbor relationships.
• D. It negotiates correctness parameters between neighboring interfaces.
• E. It uses timers to elect the router with the fastest links as the designated router.
• F. It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF.

Correct answer: A, C

Explanation

The correct answers are A and C because the OSPF Hello protocol is responsible for discovering neighbors dynamically and maintaining relationships with them. Options B, D, E, and F either describe functions that are not part of the Hello protocol or are incorrect interpretations of its role in OSPF.