The answer is switch stacking, which is the correct choice because it allows multiple physical switches to operate as a single logical unit with a shared control plane and management interface, providing high availability without relying on Spanning Tree Protocol convergence. Unlike a traditional STP-based topology, where a link failure triggers a slow reconvergence, a stacked switch group continues forwarding traffic seamlessly if one member fails, making it ideal for data center core networks. On the CompTIA Network+ N10-009 exam, this question tests your ability to distinguish between stacking and STP—a common trap is confusing stacking with link aggregation (LACP), which bundles ports but does not unify the control plane. Remember the memory tip: “Stack for simplicity, STP for loops”—stacking simplifies management and redundancy, while STP prevents loops but adds convergence delay.
N10-009 Network Implementation Practice Question
This N10-009 practice question tests your understanding of network implementation. 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 network engineer is designing a data center network and needs to ensure high availability for the core switches. Which technology allows multiple physical switches to be combined into a single logical switch to simplify management and improve redundancy?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Switch stacking
Switch stacking combines multiple physical switches into a single logical unit, sharing a common control plane and management interface. This simplifies configuration and provides redundancy because if one switch in the stack fails, the remaining switches continue forwarding traffic without requiring STP convergence.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Spanning Tree Protocol (STP)
Why it's wrong here
STP prevents loops but does not combine switches into a single logical entity.
✓
Switch stacking
Why this is correct
Stacking combines multiple switches via dedicated stacking ports to act as one logical switch with a single management IP.
Related concept
Read the scenario before looking for a memorised answer.
✗
EtherChannel
Why it's wrong here
EtherChannel aggregates multiple physical links into one logical link for increased bandwidth, not switch virtualization.
✗
Virtual Router Redundancy Protocol (VRRP)
Why it's wrong here
VRRP provides router redundancy, not switch stacking.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between EtherChannel (link aggregation) and stacking (switch aggregation), so the trap here is confusing a technology that bundles links with one that bundles entire switches.
Detailed technical explanation
How to think about this question
In a switch stack, one switch is elected as the stack master and manages the control plane (e.g., spanning-tree, VLANs) for all members; if the master fails, a standby takes over using a failover mechanism like Cisco's StackWise or FlexStack. This reduces STP complexity because the entire stack appears as one bridge, eliminating the need for STP between stack members and allowing all uplinks to remain active.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the N10-009 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this N10-009 question in full detail.
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Switch stacking — Switch stacking combines multiple physical switches into a single logical unit, sharing a common control plane and management interface. This simplifies configuration and provides redundancy because if one switch in the stack fails, the remaining switches continue forwarding traffic without requiring STP convergence.
What should I do if I get this N10-009 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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 →
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.
This N10-009 practice question is part of Courseiva's free CompTIA 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 N10-009 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.