- A
Order two 10 Gbps circuits in different metro areas
Two circuits in different metro areas provide geo-redundancy, meeting the 99.99% SLA requirement.
- B
Order four 10 Gbps circuits in the same metro area
Why wrong: While more circuits improve capacity, they do not protect against metro failure. The SLA specifically requires two circuits in different metros.
- C
Order a single 10 Gbps circuit
Why wrong: A single circuit does not provide redundancy; any failure will cause outage.
- D
Order two 10 Gbps circuits in the same metro area
Why wrong: Same metro area does not protect against metro-level failures; SLA requires two different metros.
Question 599 of 982
PCNE Implementing Hybrid Interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 is deploying a Dedicated Interconnect connection between their on-premises data center and Google Cloud. They require 99.99% availability for the interconnect. Which two actions must they take to meet this SLA?
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
✓
Order two 10 Gbps circuits in different metro areas
To achieve 99.99% availability for Dedicated Interconnect, you need two connections with at least 10 Gbps each, placed in different metropolitan areas (different metro zones). This provides redundancy even if a whole metro area fails.
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.
- ✓
Order two 10 Gbps circuits in different metro areas
Why this is correct
Two circuits in different metro areas provide geo-redundancy, meeting the 99.99% SLA requirement.
Related concept
OSPF neighbours must agree on key parameters.
- ✗
Order four 10 Gbps circuits in the same metro area
Why it's wrong here
While more circuits improve capacity, they do not protect against metro failure. The SLA specifically requires two circuits in different metros.
- ✗
Order a single 10 Gbps circuit
Why it's wrong here
A single circuit does not provide redundancy; any failure will cause outage.
- ✗
Order two 10 Gbps circuits in the same metro area
Why it's wrong here
Same metro area does not protect against metro-level failures; SLA requires two different metros.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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.
- →
Implementing Hybrid Interconnectivity — study guide chapter
Learn the concepts, then practise the questions
- →
Implementing Hybrid Interconnectivity practice questions
Targeted practice on this topic area only
- →
All PCNE questions
982 questions across all exam domains
- →
Google Professional Cloud Network Engineer study guide
Full concept coverage aligned to exam objectives
- →
PCNE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCNE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Configuring Network Services practice questions
Practise PCNE questions linked to Configuring Network Services.
Implementing Hybrid Interconnectivity practice questions
Practise PCNE questions linked to Implementing Hybrid Interconnectivity.
Managing, Monitoring, and Optimising Network Operations practice questions
Practise PCNE questions linked to Managing, Monitoring, and Optimising Network Operations.
Designing, Planning, and Prototyping a GCP Network practice questions
Practise PCNE questions linked to Designing, Planning, and Prototyping a GCP Network.
Implementing VPC Instances practice questions
Practise PCNE questions linked to Implementing VPC Instances.
Implementing network security practice questions
Practise PCNE questions linked to Implementing network security.
Implementing a Virtual Private Cloud practice questions
Practise PCNE questions linked to Implementing a Virtual Private Cloud.
PCNE fundamentals practice questions
Practise PCNE questions linked to PCNE fundamentals.
PCNE scenario practice questions
Practise PCNE questions linked to PCNE scenario.
PCNE troubleshooting practice questions
Practise PCNE questions linked to PCNE troubleshooting.
Practice this exam
Start a free PCNE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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: Order two 10 Gbps circuits in different metro areas — To achieve 99.99% availability for Dedicated Interconnect, you need two connections with at least 10 Gbps each, placed in different metropolitan areas (different metro zones). This provides redundancy even if a whole metro area fails.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.