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 PracticeWhile reviewing OSPF logs on a Junos device, you notice frequent adjacency flaps. You suspect a mismatch in the OSPF timer configurations. Which two timers must match identically on adjacent OSPF interfaces for an adjacency to form?
Explanation: OSPF Hello and Dead intervals are critical parameters that must match identically on connected interfaces; otherwise, hello packets are rejected or dead timers expire prematurely.
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.
Which THREE conditions must match between neighboring OSPF routers for an adjacency to successfully transition from Init to ExStart/Exchange? (Choose three)
Explanation: To progress past the Init state and establish an adjacency, neighbors must agree on the Area ID, Hello/Dead intervals, and authentication credentials. Subnet mask/network matching is also required.
Which THREE Junos configuration elements are required when setting up OSPF authentication using MD5 on a broadcast interface? (Choose three)
Explanation: Configuring MD5 authentication on a Junos OSPF interface requires setting the authentication type to md5, defining the key ID, and providing the secret key string.
Which TWO factors directly influence the calculation of the OSPF Shortest Path First (SPF) algorithm tree? (Choose two)
Explanation: The SPF algorithm computes the shortest path tree using Link-State Advertisements (LSAs) in the LSDB and interface cost metrics assigned to links.
+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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