The answer is that the router is receiving VPNv4 prefixes from both neighbors. This conclusion is drawn directly from the BGP VPNv4 summary show command output, where the State/PfxRcd column for neighbor 10.0.0.7 shows 5 prefixes received and for 10.0.0.8 shows 3 prefixes received, confirming active VPN route exchange over EBGP sessions since the local AS is 65000 and the neighbors are in AS 65001 and 65002. On the ENCOR 350-401 exam, this command tests your ability to interpret MPLS Layer 3 VPN peering status; a common trap is confusing the “State/PfxRcd” column with a neighbor state—if the column shows a number, the session is established and prefixes are being received, whereas “Idle” or “Active” would indicate a problem. Memory tip: think of “PfxRcd” as “Prefixes Received”—if you see a digit, the VPNv4 neighbor is up and exchanging routes.
CCNP VPN Technologies Practice Question
This 350-401 practice question tests your understanding of vpn technologies. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command on Router R6:
R6# show ip bgp vpnv4 all summary
BGP router identifier 10.0.0.6, local AS number 65000
BGP table version is 10, main routing table version 10
10 network entries using 1440 bytes of memory
10 path entries using 800 bytes of memory
4/3 BGP path/bestpath attribute entries using 576 bytes of memory
2 BGP AS-PATH entries using 48 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
Bitfield cache entries: current 1 (at peak 2) using 32 bytes of memory
BGP using 2896 total bytes of memory
BGP activity 20/10 prefixes, 20/10 paths, scan interval 60 secs
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The router is receiving VPNv4 prefixes from both neighbors.
The BGP summary shows two VPNv4 neighbors: 10.0.0.7 (AS 65001) and 10.0.0.8 (AS 65002). The State/PfxRcd column shows 5 and 3 prefixes received respectively, meaning both peers are exchanging VPN routes. The local AS is 65000, making these EBGP sessions.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Both BGP sessions are in the Idle state.
Why it's wrong here
The State/PfxRcd column shows numbers (5 and 3), not Idle, indicating the sessions are established.
✓
The router is receiving VPNv4 prefixes from both neighbors.
Why this is correct
The State/PfxRcd shows 5 and 3 prefixes received, confirming VPNv4 route exchange.
The BGP table has no entries because the table version is 10.
Why it's wrong here
The table version indicates the number of changes, not the absence of entries; there are 10 network entries.
✗
The neighbor 10.0.0.8 is not configured for VPNv4.
Why it's wrong here
The output shows prefixes received from 10.0.0.8, so it is configured for VPNv4.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Trap categories for this question
Command / output trap
The State/PfxRcd column shows numbers (5 and 3), not Idle, indicating the sessions are established.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
OSPF neighbours must agree on key parameters.
Router ID selection can affect neighbour relationships and LSDB output.
OSPF cost influences the preferred path.
A route can appear in OSPF information but not become the installed route.
TExam Day Tips
→Check area mismatch first when OSPF adjacency fails.
→Review passive interfaces when a network is advertised but no neighbour forms.
→Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
What to study next
Got this wrong? Here's your next step.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 350-401 OSPF questions on adjacency and route selection.
VPN Technologies — This question tests VPN Technologies — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: The router is receiving VPNv4 prefixes from both neighbors. — The BGP summary shows two VPNv4 neighbors: 10.0.0.7 (AS 65001) and 10.0.0.8 (AS 65002). The State/PfxRcd column shows 5 and 3 prefixes received respectively, meaning both peers are exchanging VPN routes. The local AS is 65000, making these EBGP sessions.
What should I do if I get this 350-401 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 350-401 OSPF questions on adjacency and route selection.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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