3.4 Configure and Verify Single-Area OSPFv2
Targeted CCNA practice for this exam objective, with an explanation for every answer option.
- Certification
- CCNA
- Domain
- IP Connectivity
- Questions
- 5
Practice CCNA 3.4 Configure and Verify Single-Area OSPFv2 questions with exam-style scenarios, detailed explanations, and option-by-option rationale for this topic area.
Example question from this objective
Each option is explained, so the reasoning behind the distractors is part of the answer.
OSPF can reach a prefix through path A with interface costs 10 and 20, or path B with costs 5, 5, and 30. Which path is preferred?
- Both paths because OSPF ignores interface costs
- Path B because it has more hops
- Path A because its total cost is 30
- Path B because its first interface cost is lower
Both paths because OSPF ignores interface costs — Interface costs are the basis of the OSPF path metric.
Path B because it has more hops — Hop count is not the OSPF metric.
Path A because its total cost is 30 — Correct. OSPF sums outgoing interface costs; 30 for path A is lower than 40 for path B.
Path B because its first interface cost is lower — OSPF compares accumulated path cost rather than only the first link.