JNCIA-Junos: Juniper Networks Certified Associate – Junos — Question 39

Which three statements describe OSPF? (Choose three.)

Answer options

• A. OSPF uses a distance-vector algorithm to calculate routing cost.
• B. OSPF calculates the best path to each destination.
• C. OSPF is a link-state IGP.
• D. OSPF must operate between different autonomous systems.
• E. OSPF uses areas to incorporate hierarchy and to allow for scalability.

Correct answer: B, C, E

Explanation

The correct answers are B, C, and E because OSPF indeed calculates the best path to destinations (B), is a link-state interior gateway protocol (C), and uses areas to manage hierarchy and scalability (E). Option A is incorrect since OSPF uses a link-state algorithm, not a distance-vector algorithm, and option D is incorrect because OSPF primarily operates within a single autonomous system, not between different ones.