hardMultiple Choice
300-410 Practice Question: Runs the following command on Router PE4: PE4#…
A network engineer runs the following command on Router PE4:
PE4# show bgp vpnv4 unicast all summary
BGP router identifier 10.0.0.4, local AS number 65001 BGP table version is 25, main routing table version 25 5 network prefixes using 640 bytes of memory 5 path entries using 400 bytes of memory 3/3 BGP path/bestpath attribute entries using 360 bytes of memory 1 BGP AS-PATH entries using 24 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 BGP using 1424 total bytes of memory BGP activity 15/10 prefixes, 20/15 paths, scan interval 60 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.0.0.5 4 65001 1020 1015 25 0 0 00:12:34 5 10.0.0.6 4 65002 500 495 25 0 0 00:06:20 0
Based on this output, what is the problem?
⚠ Common exam trap
The trap is misreading the State/PfxRcd column — candidates see '0' and assume the session is down or the table is empty, when in fact the session is Established and the zero means no prefixes were received from that specific neighbor.
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
✓
Neighbor 10.0.0.6 is not sending any prefixes.
The output shows neighbor 10.0.0.6 with a PfxRcd count of 0, meaning zero prefixes have been received from that neighbor, while the session is Established (Up/Down 00:06:20). Neighbor 10.0.0.5 shows 5 prefixes received, so it is exchanging prefixes normally. The problem is that 10.0.0.6 is not advertising any VPNv4 prefixes to PE4.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Neighbor 10.0.0.5 is not exchanging prefixes.
Why it's wrong here
The State/PfxRcd column shows 5 for 10.0.0.5, meaning five prefixes were received, so prefixes are being exchanged. Reading PfxRcd as a fault is tempting when a session is suspected, and this option would be correct only if that column displayed 0 or the state stayed Idle.
- ✓
Neighbor 10.0.0.6 is not sending any prefixes.
Why this is correct
The State/PfxRcd column for 10.0.0.6 shows 0, meaning the session is Established but no VPNv4 prefixes have been received from that peer. Since the stem asks what the output reveals, the zero prefix count is the fault: PE4 has no routes from AS 65002.
- ✗
Both neighbors are in the Idle state.
Why it's wrong here
Both neighbours are Established, not Idle: the State/PfxRcd column shows 5 and 0, and Idle would display the word "Idle" there. The zero prefix count for 10.0.0.6 reflects a session up with no VPNv4 routes received, not a down neighbour.
- ✗
The BGP table is empty.
Why it's wrong here
The header reports 5 network prefixes and 5 path entries, so the table holds routes; the empty-looking section is just memory accounting. It is tempting because no prefix list is printed, and this option would be correct if the summary showed zero prefixes and zero path entries.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
This 300-410 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 300-410 exam.