N10-009 Exam Preparation Material | CompTIA Network+ Certification

Prepare for the N10-009 with reliable study materials, practice questions, and key exam insights.

Prepare for the N10-009 CompTIA Network+ Certification exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

A network engineer configures the network settings in a new server as follows:
IP address = 192.163.1.15
Subnet mask = 255.255.255.0
Gateway = 192.163.1.255
The server can reach other hosts on the same subnet successfully, but it cannot reach hosts on different subnets.
Which of the following is most likely configured incorrectly?

A. Subnet mask
B. Gateway
C. Default route
D. IP address

Explanation:
The default gateway for a network should be an IP address within the subnet, but not the broadcast address.
In this case:
IP: 192.163.1.15
Subnet Mask: 255.255.255.0
This means the network range is: 192.163.1.0 - 192.163.1.255

Question#2

Which of the following steps in the troubleshooting methodology includes checking logs for recent changes?

A. Identify the problem.
B. Document the findings and outcomes.
C. Test the theory to determine cause.
D. Establish a plan of action.

Explanation:
Reference: CompTIA Network+ Certification Exam Objectives - Troubleshooting section.

Question#3

Which of the following is used to stage copies of a website closer to geographically dispersed users?

A. VPN
B. CDN
C. SAN
D. SDN

Explanation:
A Content Delivery Network (CDN) caches website content across multiple geographically distributed servers to reduce latency and improve load times for users worldwide.
Breakdown of Options:
A. VPN C Encrypts network connections, does not distribute website content.
B. CDN C ✅ Correct answer. A network of caching servers that delivers web content faster.
C. SAN C Storage Area Network, not related to web content distribution.
D. SDN C Software-defined networking, which controls network flows but does not stage website content.
Reference: CompTIA Network+ (N10-009) Official Study Guide C Domain 1.5: Compare and contrast different networking services.

Question#4

A network administrator is responding to a request to configure a new IP phone.
Which of the following should the network administrator do to allow data and voice traffic to be properly prioritized?

A. Configure full duplex.
B. Modify Qo
C. Enable 802.1Q tagging.
D. Change the native VLA

Explanation:
To ensure voice and data traffic are properly prioritized for an IP phone, the administrator should modify (configure) QoS. In Network+ (N10-009), QoS is the primary mechanism used to prioritize latency-sensitive traffic such as VoIP. By classifying and marking voice frames/packets (often using DSCP/CoS values) and applying priority queuing, the network ensures voice traffic experiences minimal delay and jitter even when links are congested. This is essential for call quality because voice is highly sensitive to variation in delivery time and packet loss.

Question#5

Which of the following protocols uses the Dijkstra's Link State Algorithm to establish routes inside its routing table?

A. OSPF
B. EIGRP
C. BGP
D. RIP

Explanation:
OSPF (Open Shortest Path First) is a link-state routing protocol that uses the Dijkstra algorithm, also known as the shortest path first (SPF) algorithm, to determine the most efficient routes.
From Andrew Ramdayal’s guide:
“OSPF is a link-state routing protocol that provides fast, efficient path selection using the shortest path first (SPF) algorithm.”

Exam Code: N10-009
Q & A: 551 Q&As         Updated:  Sep 25,2026

 

 Access Complete N10-009 Preparation Material

What This N10-009 Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current N10-009 exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This N10-009 Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the N10-009 exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

Independent N10-009 Preparation Resource

CertQueen independently develops its certification study materials for educational purposes. The practice questions are not copied from, recalled from, or presented as live or official exam questions.

CertQueen is not affiliated with, endorsed by, sponsored by, or authorized by any certification provider. Certification names, exam codes, product names, and related trademarks are the property of their respective owners and are referenced only for identification and educational purposes.