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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Network+ Certification Exam |
| Exam Number: | N10-009 |
| Passing Score: | 720 (scale 100โ900) |
| Related Certifications: | CompTIA Security+ CompTIA A+ CompTIA Cloud+ CompTIA Server+ |
| Available Languages: | English, Japanese, Portuguese, Spanish, German |
| Certificate Validity Period: | 3 years |
| Exam Format: | Performance-based questions, Multiple-choice |
| Exam Duration: | 90 minutes |
| Exam Price: | $369 USD |
| Real Exam Qty: | Up to 90 |
| Recommended Training: | CompTIA Study Materials CompTIA Official Training |
| Exam Registration: | CompTIA Official Registration Pearson VUE Exam Scheduling |
| Sample Questions: | CompTIA N10-009 Sample Questions |
| Exam Way: | Online remote proctored or onsite at authorized Pearson VUE test centers |
| Pre Condition: | No mandatory prerequisites; recommended: CompTIA A+ certification and 9โ12 months of hands-on networking experience |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/network/ |
You have to change the way your study. Get the best CompTIA Network+ Certification Exam N10-009 exam questions for your text, check all the chapters, and carefully take note of the important points. You can even highlight the important ones to get a quick revision whenever you want. Cramming the CompTIA Network+ Certification Exam N10-009 books is not a good idea because it will not help you in understanding the concept. You just read the lines, try to remember them, and believe that you can keep those lines in your mind during the CompTIA Certification Exams.
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NEW QUESTION # 315
Anetwork technicianis troubleshooting afaulty NICandtests the theory. Which of the following should the techniciando next?
Answer: D
Explanation:
Comprehensive and Detailed Explanation:
Once thetheory has been tested and confirmed, the next step is toimplement the solutionbased on the CompTIA troubleshooting model.
CompTIA Troubleshooting Model:
* Identify the problem.
* Establish a theory of probable cause.
* Test the theory.
* Establish a plan of action and implement the solution.#(Correct step)
* Verify full system functionality.
* Document findings, actions, and outcomes.
Breakdown of Options:
* A. Develop a theory- The theory hasalready been developed and tested.
* B. Establish a plan of action- This happensbefore implementation, but since the issue isconfirmed, it's time to act.
* C. Implement the solution-Correct answer.The problem is confirmed, so the fix should be applied.
* D. Document the findings- Documentation is thefinal step, not the next one.
NEW QUESTION # 316
A network engineer added more APs to improve wireless coverage. However, users now report that the connectivity disconnects and reconnects repeatedly. Which of the following is causing the issue?
Answer: B
Explanation:
Adding more access points can improve coverage, but it also increases the risk of co-channel interference if APs are configured on the same or overlapping channels. Channel overlap causes contention and interference, leading to retries, unstable performance, and symptoms that feel like frequent disconnect/reconnect events- especially in dense deployments. Network+ (N10-009) wireless troubleshooting objectives highlight proper channel planning (non-overlapping channels, appropriate channel width) as critical when increasing AP density. If adjacent APs are competing on the same channel (or overlapping channels in 2.4 GHz), clients may experience poor signal-to-noise ratios and repeated reassociations as they struggle to maintain a stable link.
Roaming misconfiguration can cause sticky clients or poor handoffs, but the classic problem introduced immediately after "adding more APs" is interference from bad channel design. Throughput capacity is about available bandwidth and airtime efficiency; it can make things slow, but it doesn't inherently cause repeated disconnect/reconnect loops like interference does. Packet loss is a symptom that may occur due to interference, but the root cause in the options that best fits the scenario is channel overlap.
NEW QUESTION # 317
What is the correct subnet mask for a /21 network?
Answer: C
Explanation:
A /21 subnet mask means 21 bits are network bits:
* 8 + 8 + 5 = 21 # leaves 11 bits for hosts.
* Subnet mask in binary: 11111111.11111111.11111000.00000000
* Converted to decimal: 255.255.248.0
Therefore:
* A. /19 = 255.255.224.0
* B. /20 = 255.255.240.0
* # C. /21 = 255.255.248.0 # correct
* D. /22 = 255.255.252.0
Answer correction: The correct option is C. 255.255.248.0, not B.
References (CompTIA Network+ N10-009):
* Domain: Networking Concepts - Subnetting, CIDR notation, dotted decimal masks.
NEW QUESTION # 318
A network technician was recently onboarded to a company. A manager has tasked the technician with documenting the network and has provided the technician With partial information from previous documentation.
Instructions:
Click on each switch to perform a network discovery by entering commands into the terminal. Fill in the missing information using drop-down menus provided.
Answer:
Explanation:
See the Explanation for detailed information on this simulation.
Explanation:
(Note: Ips will be change on each simulation task, so we have given example answer for the understanding) To perform a network discovery by entering commands into the terminal, you can use the following steps:
Click on each switch to open its terminal window.
Enter the command show ip interface brief to display the IP addresses and statuses of the switch interfaces.
Enter the command show vlan brief to display the VLAN configurations and assignments of the switch interfaces.
Enter the command show cdp neighbors to display the information about the neighboring devices that are connected to the switch.
Fill in the missing information in the diagram using the drop-down menus provided.
Here is an example of how to fill in the missing information for Core Switch 1:
The IP address of Core Switch 1 is 192.168.1.1.
The VLAN configuration of Core Switch 1 is VLAN 1: 192.168.1.0/24, VLAN 2: 192.168.2.0/24, VLAN 3:
192.168.3.0/24.
The neighboring devices of Core Switch 1 are Access Switch 1 and Access Switch 2.
The interfaces that connect Core Switch 1 to Access Switch 1 are GigabitEthernet0/1 and GigabitEthernet0/2.
The interfaces that connect Core Switch 1 to Access Switch 2 are GigabitEthernet0/3 and GigabitEthernet0/4.
You can use the same steps to fill in the missing information for Access Switch 1 and Access Switch 2.
NEW QUESTION # 319
A network technician is examining the configuration on an access port and notices more than one VLAN has been set. Which of the following best describes how the port is configured?
Answer: B
Explanation:
It is common for an access port to have both a voice VLAN and a data VLAN. A voice VLAN separates voice traffic from regular data traffic, ensuring better quality and security for voice communications.
NEW QUESTION # 320
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