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Title: N10-009試験の準備方法｜最高のN10-009試験試験｜有難いCompTIA Network+ Certification Exam日本語試験対策 [Print This Page]
Author: maxgree606    Time: 14 hour before
Title: N10-009試験の準備方法｜最高のN10-009試験試験｜有難いCompTIA Network+ Certification Exam日本語試験対策
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CompTIA N10-009 認定試験の出題範囲：
トピック出題範囲
トピック 1
  • Networking Concepts: For network administrators and IT support professionals, this domain covers
トピック 2
  • Network Operations: For IT operations staff and network operations center (NOC) technicians, this part of the exam covers the purpose of organizational processes and procedures and use of network monitoring technologies.
トピック 3
  • Selection and configuration of wireless devices.
トピック 4
  • Cloud concepts and connectivity options, and Common networking ports.
トピック 5
  • OSI reference model concepts, Comparison of networking appliances, applications, and functions
トピック 6
  • Network Security: This section of the exam for cybersecurity specialists and network security administrators covers  the importance of basic network security concepts, Various types of attacks and their impact on the network, application of network security features, defense techniques, and solutions.| Network Troubleshooting: For help desk technicians and network support specialists, this section covers troubleshooting methodology, troubleshooting common cabling and physical interface issues, troubleshooting common issues with network services, and use of appropriate tools or protocols to solve networking issues.

>> N10-009試験 <<
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CompTIA Network+ Certification Exam 認定 N10-009 試験問題 (Q270-Q275):質問 # 270
A virtual machine has the following configuration:
* IPv4 address: 169.254.10.10
* Subnet mask: 255.255.0.0
The virtual machine can reach colocated systems but cannot reach external addresses on the Internet. Which of the following Is most likely the root cause?
正解：D
解説：
Understanding the 169.254.x.x Address:
An IPv4 address in the range of 169.254.x.x is an Automatic Private IP Addressing (APIPA) address, assigned when a DHCP server is unavailable.
DHCP Server Offline:
APIPA Assignment: When a device cannot obtain an IP address from a DHCP server, it assigns itself an APIPA address to enable local network communication. This allows communication with other devices on the same local subnet but not with external networks.
Resolution: Ensure the DHCP server is operational. Check for connectivity issues between the virtual machine and the DHCP server, and verify the DHCP server settings.
Comparison with Other Options:
The subnet mask is incorrect: The subnet mask 255.255.0.0 is appropriate for the 169.254.x.x range and does not prevent external access by itself.
The IP address is an RFC1918 private address: RFC1918 addresses are private IP ranges (10.x.x.x, 172.16.x.x-172.31.x.x, 192.168.x.x) but 169.254.x.x is not one of them.
The DNS server is unreachable: While this could affect name resolution, it would not prevent the assignment of a non-APIPA address or local network communication.
Troubleshooting Steps:
Verify the DHCP server's status and connectivity.
Restart the DHCP service if necessary.
Renew the IP lease on the virtual machine using commands such as ipconfig /renew (Windows) or dhclient (Linux).
Reference:
CompTIA Network+ study materials on IP addressing and DHCP troubleshooting.

質問 # 271
Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?
正解：B
解説：
Comprehensive and Detailed Explanation From Exact Extract:
A Site-to-site VPN (Virtual Private Network) is the most cost-effective solution for establishing a persistent, secure connection between two facilities. It uses the public internet to create an encrypted tunnel, leveraging existing internet connections without requiring expensive dedicated infrastructure. This makes it ideal for organizations looking to securely connect remote sites while minimizing costs.
Why not GRE tunnel? Generic Routing Encapsulation (GRE) tunnels encapsulate traffic but do not provide encryption natively, requiring additional protocols (e.g., IPsec) for security. This adds complexity and is less cost-effective than a site-to-site VPN, which integrates encryption.
Why not VXLAN? Virtual Extensible LAN (VXLAN) is used for overlay networks in data centers to extend Layer 2 networks, not for secure site-to-site connectivity.
Why not Dedicated line? A dedicated line (e.g., leased line or MPLS) provides high reliability but is significantly more expensive due to the need for dedicated infrastructure.
Reference:CompTIA Network+ N10-009 Objective 1.7: Explain the use cases for virtual private networks (VPNs) and tunneling protocols. The CompTIA Network+ Study Guide (e.g., Chapter 12: Network Security) explains that site-to-site VPNs are a cost-effective, secure method for connecting geographically separate networks over the internet.

質問 # 272
A company reports that their facsimile machine no longer has a dial tone when trying to send a fax. The phone cable is damaged on one end. Which of the following types of connectors should a technician replace?
正解：C
解説：
Fax machines use analog phone lines, which are connected usingRJ11 connectors. These are standard telephone connectors with 4 or 6 positions and are used for POTS (Plain Old Telephone Service) lines.
* F-typeis used for coaxial cables (e.g., TV and cable modems).
* RJ45is used for Ethernet network connections.
* SC (Subscriber Connector)is used for fiber optic connections, not analog telephone lines.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 2.4 - Compare and contrast common network connectors.

質問 # 273
A network administrator for a small office is adding a passive IDS to its network switch for the purpose of inspecting network traffic. Which of the following should the administrator use?
正解：A
解説：
Port mirroring, also known as SPAN (Switched Port Analyzer), is used to send a copy of network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This allows the IDS to passively inspect network traffic without interfering with the actual traffic flow. Port mirroring is an essential feature for implementing IDS in a network for traffic analysis and security monitoring.Reference: CompTIA Network+ study materials.

質問 # 274
Which of the following can support a jumbo frame?
正解：B
解説：
* Definition of Jumbo Frames:
* Jumbo frames are Ethernet frames with more than 1500 bytes of payload, typically up to 9000 bytes. They are used to improve network performance by reducing the overhead caused by smaller frames.
* Why Switches Support Jumbo Frames:
* Switches are network devices designed to manage data packets and can be configured to support jumbo frames. This capability enhances throughput and efficiency, particularly in high- performance networks and data centers.
* Incompatibility of Other Devices:
* Access Point: Primarily handles wireless communications and does not typically support jumbo frames.
* Bridge: Connects different network segments but usually operates at standard Ethernet frame sizes.
* Hub: A simple network device that transmits packets to all ports without distinguishing between devices, incapable of handling jumbo frames.
* Practical Application:
* Enabling jumbo frames on switches helps in environments where large data transfers are common, such as in storage area networks (SANs) or large-scale virtualized environments.

質問 # 275
......
IT技術の発展に従って、N10-009試験資格認定証明書を持つ人はますます多くなっていました。どんなN10-009試験参考書を選びますか？ここで、お勧めたいのは弊社のN10-009試験参考書です。N10-009試験参考書の内容は全面的で、わかりやすいです。そのほかに、N10-009試験の合格率は高い、多くの受験者が試験に合格しました。だから、弊社のN10-009試験参考書はいろいろな資料の中で目立っています。
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