- A
Configure BGP on both VLAN attachments with equal MED values.
Equal MED allows ECMP to distribute traffic across both connections.
- B
Create a single VLAN attachment shared across both connections.
Why wrong: Each connection requires its own VLAN attachment.
- C
Set the VLAN attachments to use static routing instead of BGP.
Why wrong: Static routing does not support dynamic failover and ECMP as effectively as BGP.
- D
Attach both VLAN attachments to the same Cloud Router.
A single Cloud Router manages BGP sessions for both attachments.
- E
Create two VLAN attachments, one for each connection.
Each connection has its own VLAN attachment.
Question 200 of 1,000
PCNE Implementing Hybrid Interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company has two Dedicated Interconnect connections in different metro areas to meet the 99.99% SLA. They want to ensure that traffic uses both connections in an active-active manner. Which three configurations are required? (Choose three.)
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
✓
Configure BGP on both VLAN attachments with equal MED values.
For active-active, you need two VLAN attachments (one per connection), both attached to the same Cloud Router, and you must configure BGP on both attachments with the same route preferences (e.g., equal MED) to enable ECMP.
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.
- ✓
Configure BGP on both VLAN attachments with equal MED values.
Why this is correct
Equal MED allows ECMP to distribute traffic across both connections.
Related concept
OSPF neighbours must agree on key parameters.
- ✗
Create a single VLAN attachment shared across both connections.
Why it's wrong here
Each connection requires its own VLAN attachment.
- ✗
Set the VLAN attachments to use static routing instead of BGP.
Why it's wrong here
Static routing does not support dynamic failover and ECMP as effectively as BGP.
- ✓
Attach both VLAN attachments to the same Cloud Router.
- ✓
Create two VLAN attachments, one for each connection.
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.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Visual reference
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 PCNE OSPF questions on adjacency and route selection.
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Implementing Hybrid Interconnectivity — study guide chapter
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Implementing Hybrid Interconnectivity practice questions
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FAQ
Questions learners often ask
What does this PCNE question test?
Implementing Hybrid Interconnectivity — This question tests Implementing Hybrid Interconnectivity — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Configure BGP on both VLAN attachments with equal MED values. — For active-active, you need two VLAN attachments (one per connection), both attached to the same Cloud Router, and you must configure BGP on both attachments with the same route preferences (e.g., equal MED) to enable ECMP.
What should I do if I get this PCNE 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 PCNE 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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Last reviewed: Jul 4, 2026
This PCNE practice question is part of Courseiva's free Google Cloud 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 PCNE exam.
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