20+ practice questions focused on OSPF — one of the most tested topics on the Juniper Networks Enterprise Routing and Switching, Specialist (JNCIS-ENT, JN0-352) (JNCIS-ENT) exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start OSPF PracticeAn engineer needs to prevent Type 4 and Type 5 LSAs from entering a specific OSPF area while still allowing external routes to be summarized via default routing. Which area type should be configured?
Explanation: A Totally Stubby Area (TSA) blocks Type 3, 4, and 5 LSAs from entering the area, and the ABR injects a single default route (Type 3) into the area. This prevents Type 4 (ASBR Summary) and Type 5 (AS-external) LSAs from flooding in, while still allowing external reachability via the default route. This is exactly what the question describes.
You are configuring an OSPF interface on a Junos router and want to ensure that the interface never participates in DR/BDR election, always acting as a point-to-point connection. Which interface type should you explicitly configure?
Explanation: Setting the OSPF interface-type to 'p2p' forces the interface to operate as point-to-point, which by definition does not participate in DR/BDR election and sends LSAs without network mask information. This is the explicit Junos configuration to achieve the stated requirement. The 'interface-type p2p' statement under the OSPF interface hierarchy is the correct syntax.
You need to configure an OSPF interface as passive on a Junos routing platform so that it advertises connected subnets without sending OSPF hello packets. Which configuration command achieves this?
Explanation: In Junos, an OSPF interface is marked passive by using the 'passive' statement under the specific OSPF interface configuration block.
An OSPF network running on Junos has multiple equal-cost paths to a destination. By default, how many equal-cost paths does Junos OSPF install into the forwarding table (inet.0)?
Explanation: By default, Junos OSPF installs up to 16 equal-cost next-hops into the inet.0 forwarding table for a given destination. This is controlled by the 'maximum-paths' setting under the OSPF protocol configuration, and 16 is the default value on most Junos platforms.
An administrator needs to modify the OSPF cost on a specific Junos interface to influence traffic engineering without changing the reference bandwidth globally. Which command accomplishes this?
Explanation: In Junos OSPF, the per-interface cost is set with the 'metric' statement under the OSPF interface hierarchy, not 'cost'. The command 'set protocols ospf area 0.0.0.0 interface ge-0/0/2.0 metric 50' correctly overrides the default cost for that interface without changing the global reference bandwidth. This influences SPF path selection for traffic engineering.
+15 more OSPF questions available
Practice all OSPF questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of OSPF. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
OSPF questions on the JNCIS-ENT frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. OSPF is tested as part of the Juniper Networks Enterprise Routing and Switching, Specialist (JNCIS-ENT, JN0-352) (JNCIS-ENT) blueprint. Practicing with targeted OSPF questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free JNCIS-ENT practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but OSPF is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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