The answer is that both BGP sessions are in the established state. This is confirmed by the State/PfxRcd column in the BGP summary show command output, which displays the number of prefixes received (15 and 20) instead of a state like Idle or Active; when a BGP neighbor is fully established, this field shows a numeric prefix count rather than a textual state. On the ENCOR 350-401 exam, this output tests your ability to quickly interpret the show bgp summary command and distinguish between established and non-established sessions—a common trap is mistaking a blank or zero prefix count for a problem, but here the non-zero values clearly indicate successful peering. Remember that the established state is the only state where prefix exchange occurs, so if you see a number in the State/PfxRcd column, the session is up and exchanging routes. A useful memory tip: “PfxRcd means prefixes received; if it’s a number, the neighbor is established—no number means no party.”
CCNP NetFlow and Telemetry Practice Question
This 350-401 practice question tests your understanding of netflow and telemetry. 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 R1:
R1# show bgp summary
BGP router identifier 192.168.1.1, local AS number 65001
BGP table version is 10, main routing table version 10
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Both BGP sessions are in the established state
The output shows BGP neighbors and their state. Both neighbors are in established state (PfxRcd shows number of prefixes received). The local AS is 65001, and the neighbors are in different AS numbers (65002 and 65003), indicating eBGP sessions. The correct answer is that both BGP sessions are established and exchanging prefixes.
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 established state
Why this is correct
The State/PfxRcd column shows prefix counts (15 and 20), indicating the sessions are established and exchanging routes.
Idle state would show 'Idle' or 'Active' in the State column, not a prefix count.
✗
Router R1 is using iBGP with both neighbors
Why it's wrong here
iBGP requires the same AS number; here the neighbors are in different AS numbers (65002, 65003), so it is eBGP.
✗
The BGP table version is 10, meaning 10 prefixes are in the table
Why it's wrong here
The table version is an internal counter, not the number of prefixes. The number of prefixes received is shown in the PfxRcd column.
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
Idle state would show 'Idle' or 'Active' in the State column, not a prefix count.
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.
NetFlow and Telemetry — This question tests NetFlow and Telemetry — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Both BGP sessions are in the established state — The output shows BGP neighbors and their state. Both neighbors are in established state (PfxRcd shows number of prefixes received). The local AS is 65001, and the neighbors are in different AS numbers (65002 and 65003), indicating eBGP sessions. The correct answer is that both BGP sessions are established and exchanging prefixes.
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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