Practice JNCIP-ENT Interior Gateway Protocols questions with full explanations on every answer.
Start practicing
Interior Gateway Protocols — choose a session length
Free · No account required
Click any question to see the full explanation and answer options, or start a focused practice session above.
When configuring OSPFv3, which Junos address-family hierarchy is used to enable OSPFv3 on an interface?
2You want to tune OSPF convergence by reducing the hello and dead intervals on a point-to-point interface. Which configuration is valid?
3You are redistributing static routes into OSPF on a Junos device and want to assign a specific metric type to the resulting External LSAs. Where is this metric-type defined?
4An OSPF area in your network contains multiple ABRs. You need to suppress the generation of Type-4 summary LSAs into a totally stubby area. How does Junos handle this natively?
5Which Junos command displays the link-state database for OSPFv2, showing router LSAs and network LSAs?
6An administrator needs to filter Type-3 LSAs entering an OSPF stub area on a Junos routing device. Which statement under the area hierarchy is required?
7You need to configure OSPFv2 graceful restart as a helper on a Junos router to assist neighboring routers during their routing engine switchover. Which command enables helper mode?
8You are configuring OSPFv2 on a Junos device and need to inject default routes into an OSPF NSSA area. Which configuration command under protocols ospf area should be used?
9What is the default OSPF reference bandwidth in Junos OS?
10When configuring OSPFv3 authentication, which mechanism is natively utilized in modern Junos implementations since OSPFv3 relies on IPv6 AH/ESP or OSPFv3 Authentication Trailer (RFC 7166)?
11You need to ensure that an OSPF interface does not send or receive OSPF hellos, but its subnet is still advertised into the OSPF domain. What configuration achieves this in Junos?
12You want to change the OSPF reference bandwidth globally on a Junos routing device to accurately calculate costs for high-speed interfaces. Where is this configured?
13Which command verifies the OSPF neighbor states and adjacency progress on a Junos device?
14You are configuring OSPF domain-id when redistributing routes between OSPF and BGP (or multiarea setups). Which configuration statement sets the OSPF domain identifier?
15Which Junos configuration command enables MD5 cryptographic authentication on an OSPFv2 interface?
16You need to modify the priority of a Junos OSPF interface to ensure it becomes the designated router (DR). Which command accomplishes this?
17You are troubleshooting an OSPF network where virtual links are deployed to connect a non-backbone area to Area 0 across a transit area. Which statement is true regarding virtual link configuration in Junos?
18Which statement correctly describes the function of an OSPF Stub Area?
19You are tasked with summarizing internal OSPF routes on an Area Border Router (ABR). Which configuration statement accomplishes route summarization for an area?
20How do you examine the specific OSPF routing table entries learned via OSPF on a Junos device?
21You need to prevent an OSPF interface from participating in Designated Router (DR) election, forcing it to always act as a DROTHER, even if it has the highest priority. How is this achieved in Junos?
22You want to tune the speed at which OSPF processes link-state updates by modifying the SPF calculation delay and hold timers. Where are these timers configured?
23You are configuring an OSPF NSSA and want to suppress the translation of Type-7 LSAs into Type-5 LSAs on one of the ABRs because another ABR is already performing the translation. Which statement is used?
24Which command allows you to view the real-time tracing of OSPF packet exchanges and state changes on a Junos device?
25You need to adjust the OSPF cost on a specific interface to manipulate path selection. Which command sets the OSPF cost on an interface?
26When redistributing BGP routes into OSPF, what is the default OSPF metric assigned to the redistributed routes in Junos if no metric is specified in the export policy?
27You are configuring OSPF database overflow protection to prevent a router from running out of memory due to an excessive number of external LSAs in the LSDB. Which configuration enables this feature globally?
28Which TWO actions can be performed by an OSPF routing policy export filter when redistributing routes into OSPF? (Choose two)
29Which THREE types of LSAs are blocked from entering an OSPF Totally Stubby Area? (Choose three)
30When configuring OSPF sham-links in Junos to support MPLS VPN back-door links, which TWO characteristics apply? (Choose two)
31Which TWO statements are true regarding Junos OSPF routing policies and policy evaluation? (Choose two)
32Which TWO commands are used to troubleshoot OSPF issues on Junos devices? (Choose two)
33Which TWO types of OSPF areas allow the generation of Type-7 LSAs? (Choose two)
34Which THREE mechanisms are utilized by Junos to protect OSPF routing operations and control plane resources? (Choose three)
35Which THREE parameters must match between OSPF routers for an adjacency to successfully form on a point-to-point network? (Choose three)
36Which THREE configuration tasks are required when implementing OSPFv3 on Junos devices? (Choose three)
37An engineer needs to prevent Type-5 LSAs from entering an OSPF stub area while still allowing external routes to be reached via a default route. Which configuration statement under [edit protocols ospf area] achieves this on a Juniper device?
38You are redistributing BGP routes into OSPF on an MX Series router. By default, what metric type and cost are assigned to these redistributed routes when they enter the OSPF domain?
39Which OSPFv3 LSA type is responsible for carrying IPv6 prefix information within the same area, replacing the role of Router and Network LSAs carrying IP addresses in OSPFv2?
40Which Junos configuration hierarchy is used to disable the generation of OSPF Type-7 to Type-5 LSA translation on an NSSA Area Border Router (ABR)?
41You want to filter OSPF Type-3 Summary LSAs leaving Area 1 on an ABR running Junos OS. Where must this export policy be applied?
42An engineer is configuring OSPFv3 on Junos OS and notices that adjacencies are failing to form over a point-to-point link. Reviewing the interface configuration, what is a mandatory requirement for OSPFv3 interface configuration that differs fundamentally from OSPFv2?
43You are designing a routing policy to tag routes being redistributed from OSPF into BGP. Where in the routing policy should the tag match condition be placed?
44Which TWO statements are correct regarding OSPF NSSA (Not-So-Stubby Area) behavior and configuration in Junos OS? (Choose two)
45Which THREE parameters must match between two OSPF routers on a shared broadcast segment for an adjacency to successfully form? (Choose three)
46Which TWO actions can you take in Junos OS to optimize OSPF convergence times in a large enterprise network? (Choose two)
The Interior Gateway Protocols domain covers the key concepts tested in this area of the JNCIP-ENT exam blueprint published by Juniper Networks. Courseiva provides free domain-focused practice, mock exams, missed-question review, and readiness tracking across all JNCIP-ENT domains — no account required.
The Courseiva JNCIP-ENT question bank contains 46 questions in the Interior Gateway Protocols domain. Click any question to see the full explanation and answer breakdown.
Start with a 10-question focused session to identify your baseline accuracy in this domain. Read every explanation — even for questions you answer correctly — to understand the reasoning. Once you score consistently above 80%, move to a 20–30 question session to confirm depth before moving to the next domain.
Yes — the session launcher on this page draws questions exclusively from the Interior Gateway Protocols domain. Choose 10, 20, 30, or 50 questions for a focused session, or click individual questions to review them one by one.
Save your results, see per-domain analytics, and get readiness scores — free, for every certification.
Sign Up FreeFree forever · Every certification included