mediumMultiple Choice
CCNP Practice Question: Runs the following command on Router R7: R7# show…
A network engineer runs the following command on Router R7:
R7# show ip ospf neighbor vrf CUSTOMER-E Neighbor ID Pri State Dead Time Address Interface 10.0.0.8 1 FULL/DR 00:00:35 10.0.1.2 GigabitEthernet0/0.500 10.0.0.9 1 FULL/BDR 00:00:31 10.0.2.2 GigabitEthernet0/0.600
Based on this output, what can be concluded?
⚠ Common exam trap
Cisco often tests the misconception that the DR is always the neighbor with the highest IP address or the first listed, but the DR is explicitly indicated by the state field (FULL/DR), not by the Neighbor ID or IP address.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
OSPF is operating within VRF CUSTOMER-E with two neighbors
The command `show ip ospf neighbor vrf CUSTOMER-E` explicitly queries OSPF neighbors within the VRF named CUSTOMER-E. The output shows two neighbors (10.0.0.8 and 10.0.0.9) with states FULL/DR and FULL/BDR, confirming that OSPF is actively operating inside that VRF. Therefore, option C is correct because it accurately states that OSPF is operating within VRF CUSTOMER-E with two neighbors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
OSPF is not configured for VRF CUSTOMER-E
Why it's wrong here
This claim is contradicted by the neighbor table. The output of 'show ip ospf neighbor' displays active OSPF neighbors within VRF CUSTOMER-E, which can only occur if an OSPF process is explicitly activated under that VRF using 'router ospf ... vrf CUSTOMER-E'. Two visible neighbors in FULL state demonstrate that OSPF is configured and forming adjacencies, so this option is false.
- ✗
There is only one OSPF neighbor in VRF CUSTOMER-E
Why it's wrong here
The neighbor table for VRF CUSTOMER-E lists two separate entries, each with a distinct Router ID and interface, both in FULL state. For example, neighbors 10.0.0.8 and 10.0.0.9 are both present, meaning OSPF has established two independent adjacencies. Therefore, the statement of a single neighbor is incorrect.
- ✓
OSPF is operating within VRF CUSTOMER-E with two neighbors
Why this is correct
Correct. The OSPF process is bound to VRF CUSTOMER-E, and its neighbor table shows two fully established adjacencies (state FULL/DR and FULL/BDR), confirming active link-state routing within the VRF. This is consistent with having at least two OSPF routers sharing a common segment, and the neighbor states indicate that database synchronization is complete.
- ✗
The DR is 10.0.0.9
Why it's wrong here
Incorrect. The Designated Router on the shared segment is 10.0.0.8, as indicated by the neighbor state 'FULL/DR' for that Router ID. 10.0.0.9 is simply another OSPF neighbor in FULL state, likely as BDR, but it does not hold the DR role. The DR election is determined by OSPF priority and Router ID, and the output clearly identifies 10.0.0.8 as DR.
Visual reference
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.