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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Network+ Certification Exam |
| Exam Number: | N10-009 |
| Available Languages: | German, Portuguese, English, Spanish, Japanese |
| Certificate Validity Period: | 3 years |
| Related Certifications: | CompTIA A+ CompTIA Security+ CompTIA Cloud+ CompTIA Server+ |
| Exam Format: | Performance-based questions, Multiple-choice |
| Exam Price: | $369 USD |
| Passing Score: | 720 (scale 100–900) |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | Up to 90 |
| Recommended Training: | CompTIA Official Training CompTIA Study Materials |
| 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 9–12 months of hands-on networking experience |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/network/ |
CompTIA N10-009認定試験の難しさで近年にほとんどの受験生は資格認定試験に合格しなっかたと良く知られます。だから、我々社の有効な試験問題集は長年にわたりCompTIA N10-009認定資格試験問題集作成に取り組んだIT専門家によって書いてます。実際の試験に表示される質問と正確な解答はあなたのCompTIA N10-009認定資格試験合格を手伝ってあげます。
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質問 # 407
A user reports having intermittent connectivity issues to the company network. The network configuration for the user reveals the following:
IP address: 192.168.1.10
Subnet mask: 255.255.255.0
Default gateway: 192.168.1.254
The network switch shows the following ARP table:
Which of the following is the most likely cause of the user's connection issues?
正解：A
解説：
This scenario describes a duplicate IP address. The ARP table shows two different MAC addresses (0c00.
1134.0001 and 0c00.1298.d239) associated with the same IP address (192.168.1.10), which leads to ARP table conflicts and intermittent connectivity.
From Andrew Ramdayal's guide:
"Duplicate IP addresses occur when two devices on the same network are assigned the same IP address, causing network conflicts. Common issues include manual configuration errors or DHCP lease issues.
Resolution includes using IP management tools and avoiding overlaps in DHCP and static IP assignments."
質問 # 408
Which of the following uses the longest prefix match to determine an exit interface?
正解：B
解説：
The longest prefix match is a routing concept used to find the most specific route to a destination IP address. The routing table performs this calculation to determine the exit interface for a packet, ensuring the most accurate delivery. The document explains:
"Routers use the longest prefix match when searching the routing table to determine the best path for an IP packet. This ensures that the most specific (and thus optimal) route is chosen, based on the destination IP address."
質問 # 409
A customer calls the help desk to report that resources are no longer reachable. The resources were available before network changes were made. The technician verifies the report, investigates, and discovers that a new logical layout is segmenting the network using tagging. Which of the following appliances most likely needs to be reviewed to restore the connections?
正解：A
解説：
The correct answer is Switch because the question references a new logical layout segmenting the network using tagging, which indicates VLAN (Virtual Local Area Network) configuration. VLAN tagging (IEEE
802.1Q) is performed on switches to logically separate broadcast domains within the same physical infrastructure.
According to CompTIA Network+ (N10-009) objectives under switching technologies, VLANs are used to improve security, reduce broadcast traffic, and logically segment network traffic. When VLAN tagging is misconfigured-such as incorrect trunk ports, access port assignments, or mismatched VLAN IDs-devices may lose connectivity to required network resources.
Since the issue began after changes involving tagging, the most likely cause is an incorrect switch configuration, such as improper VLAN assignments or trunking settings.
An access point (Option A) may use VLANs for SSID segmentation, but core tagging configuration is handled at the switch. A firewall (Option B) filters traffic but does not control VLAN tagging at Layer 2 in typical deployments. A load balancer (Option D) distributes traffic among servers and is unrelated to VLAN segmentation.
Therefore, reviewing the switch configuration is the appropriate action to restore connectivity.
質問 # 410
A wireless administrator is setting up a small mesh network in an open-concept office space. The administrator must select a supported frequency that offers the fastest speeds for the backhaul connection.
Which of the following should the administrator select?
正解：B
解説：
The 6GHz band provides the fastest speeds and highest throughput among the listed options, making it ideal for a high-performance wireless mesh backhaul.
質問 # 411
A company wants to implement a disaster recovery site or non-critical applicance, which can tolerance a short period of downltime. Which of the followig type of sites should the company impelement to achive this goal?
正解：C
解説：
A warm site is a compromise between a hot site and a cold site, providing a balance between cost and recovery time. It is partially equipped with the necessary hardware, software, and infrastructure, allowing for a quicker recovery compared to a cold site but at a lower cost than a hot site.
Recovery Time: Warm sites can be operational within hours to a day, making them suitable for non- critical applications that can tolerate short downtimes.
Cost-Effectiveness: Warm sites are more economical than hot sites as they do not require all systems to be fully operational at all times.
質問 # 412
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