最新のCompTIA N10-009日本語試験問題解答がズラリ
N10-009日本語試験練習テスト問題（更新された172問あります)
質問 # 75
フルトンネル VPN は次のどれを提供しますか?
- A. すべてのネットワークトラフィックの企業検査
- B. 帯域幅要件が低い
- C. ローカルコンピュータのパスワードをリセットする機能
- D. ブロックされたサイトへのアクセス
正解：A
解説：
A full-tunnel VPN routes all of a user's network traffic through the corporate network. This means that the organization can inspect all network traffic for security and compliance purposes, as all data is tunneled through the VPN, allowing for comprehensive monitoring and inspection.
Reference: CompTIA Network+ study materials.
質問 # 76
提供された URL が正しい IP アドレスに解決されないため、ユーザーは Web サイトに移動できません。
他のユーザーは問題なく目的の Web サイトに移動できます。この問題の原因として最も可能性が高いのは次のどれですか?
- A. ネームサーバーレコード
- B. ホストファイル
- C. IP ヘルパー ANS
- D. 自己署名証明書
正解：B
解説：
* Role of the Hosts File:
* The hosts file is a local file on a computer that maps hostnames to IP addresses. It can be used to override DNS resolution by providing a static mapping of a hostname to an IP address.
* Common Issues with the Hosts File:
* If an incorrect IP address is mapped to a hostname in the hosts file, it can cause the computer to resolve the hostname to the wrong IP address. This can lead to navigation issues for specific websites while other users, relying on DNS, do not face the same problem.
* Why Other Options are Less Likely:
* Self-signed certificate: Relates to SSL/TLS and would cause a security warning, not a navigation failure.
* Nameserver record: Affects all users, not just one.
* IP helper: Used to forward DHCP requests and is unrelated to DNS resolution issues.
* Troubleshooting Steps:
* Check the hosts file on the affected user's computer (C:\Windows\System32\drivers\etc\hosts on Windows or /etc/hosts on Unix/Linux).
* Look for entries that map the problematic hostname to an incorrect IP address and correct or remove them.
References:
* CompTIA Network+ study materials and system administration documentation.
質問 # 77
特定のサービスの停止の平均期間を説明するために使用されるのは次のどれですか?
- A. MTBF
- B. RTO
- C. 平均所要時間
- D. RPO
正解：C
解説：
Explanation: MTTR (Mean Time to Repair) is the average time it takes to repair a system or service after a failure. It helps in measuring the downtime and planning recovery processes.
質問 # 78
コネクションレス通信上のトランスポート層で発生する伝送形式を最もよく表すものはどれですか?
- A. データグラム
- B. パケット
- C. セグメント
- D. フレーム
正解：A
解説：
At the transport layer, connectionless communication is typically handled using the User Datagram Protocol (UDP), which transmits data in units called datagrams. Unlike TCP, UDP does not establish a connection before sending data and does not guarantee delivery, making datagrams the correct term for the transmission format in this context. References: CompTIA Network+ Exam Objectives and official study guides.
質問 # 79
シミュレーション
最近の停電後、アプリケーション サーバーへのアクセスでパフォーマンスの問題がユーザーから報告されています。ワイヤレス ユーザーからも、断続的なインターネットの問題が報告されています。
説明書
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正解：
解説：
See the answer and solution below
Explanation:
Network Health:
WAN 2 appears to have a lower average latency and loss percentage, which would make it the preferred WAN station for VoIP traffic. VoIP traffic requires low latency and packet loss to ensure good voice quality and reliability. WAN 1 seems to have higher RAM and processor usage, which could also affect the performance of VoIP traffic.
Here's the summary of the key metrics for WAN 1 and WAN 2 from the image provided:
WAN 1:
Uplink Speed: 10G
Total Usage: 26.969GB Up / 1.748GB Down
Average Throughput: 353MBps Up / 23.42MBps Down
Loss: 2.51%
Average Latency: 24ms
Jitter: 9.5ms
WAN 2:
Uplink Speed: 1G
Total Usage: 930GB Up / 138GB Down
Average Throughput: 12.21MBps Up / 1.82MBps Down
Loss: 0.01%
Average Latency: 11ms
Jitter: 3.9ms
For VoIP traffic, low latency and jitter are particularly important to ensure voice quality. While WAN 1 has higher bandwidth and throughput, it also has higher latency and jitter compared to WAN 2. However, WAN 2 has much lower loss, lower latency, and lower jitter, which are more favorable for VoIP traffic that is sensitive to delays and variation in packet arrival times.
Given this information, WAN 2 would generally be preferred for VoIP traffic due to its lower latency, lower jitter, and significantly lower loss percentage, despite its lower bandwidth compared to WAN 1. The high bandwidth of WAN 1 may be more suitable for other types of traffic that are less sensitive to latency and jitter, such as bulk data transfers.
Device Monitoring:
the device that is experiencing connectivity issues is the APP Server or Router 1, which has a status of Down. This means that the server is not responding to network requests or sending any dat a. You may want to check the physical connection, power supply, and configuration of the APP Server to troubleshoot the problem.
質問 # 80
単一障害点に関する懸念から、企業はネットワークに WAN を追加することを決定しました。
同社は、現在の MPLS WAN に 2 番目の MPLS ベンダーを追加し、各サイトに WAN ルーターを追加導入しました。両方の MPLS プロバイダーは WAN ネットワークで OSPF を使用し、EIGRP は内部で実行されています。新しい WAN が稼働する最初のサイトは成功しましたが、2 番目のサイトがアクティブになると、重大なネットワーク問題が発生します。WAN が不安定になる原因として最も可能性が高いのは次のどれですか。
- A. 変更された CDP ネイバー
- B. 非対称ルーティング
- C. スイッチングループ
- D. IP アドレスが正しくありません
正解：B
解説：
Asymmetrical routing occurs when packets take different paths to and from the destination, leading to instability in network communication. The use of two different MPLS providers with OSPF can lead to this type of routing issue, especially if the paths aren't carefully configured and managed. This can cause unexpected routing behaviors and instability in a dual-WAN setup. (Reference: CompTIA Network+ Study Guide, Chapter on Network Routing)
質問 # 81
ネットワーク技術者が、Web アプリケーションのパフォーマンス低下のトラブルシューティングを行っています。オフィスには、トラフィック負荷を共有する 2 つのインターネット リンクがあります。技術者は、Web アプリケーションに使用されているリンクを判断するために、次のどのツールを使用する必要がありますか。
- A. nslookup
- B. トレース
- C. ピン
- D. ネットスタット
正解：B
解説：
Understanding Tracert:
Traceroute Tool: tracert (Windows) or traceroute (Linux) is a network diagnostic tool used to trace the path that packets take from a source to a destination. It lists all the intermediate routers the packets traverse.
Determining Traffic Path:
Path Identification: By running tracert to the web application's destination IP address, the technician can identify which route the traffic is taking and thereby determine which internet link is being used.
Load Balancing Insight: If the office uses load balancing for its internet links, tracert can help verify which link is currently handling the traffic for the web application.
Comparison with Other Tools:
netstat: Displays network connections, routing tables, interface statistics, and more, but does not trace the path of packets.
nslookup: Used for querying DNS to obtain domain name or IP address mapping, not for tracing packet routes.
ping: Tests connectivity and measures round-trip time but does not provide path information.
Implementation:
Open a command prompt or terminal.
Execute tracert [destination IP] to trace the route.
Analyze the output to determine the path and the link being used.
Reference:
CompTIA Network+ study materials on network troubleshooting and diagnostic tools.
質問 # 82
ネットワーク管理者は、2 台のルーターをポイントツーポイント構成で接続し、IP スペースを節約する必要があります。
管理者は次のサブネットのどれを使用する必要がありますか?
- A. /26
- B. /28
- C. /30
- D. 0
正解：C
解説：
Using a /30 subnet mask is the most efficient way to conserve IP space for a point-to-point connection between two routers. A /30 subnet provides four IP addresses, two of which can be assigned to the router interfaces, one for the network address, and one for the broadcast address. This makes it ideal for point-to- point links where only two usable IP addresses are needed.References: CompTIA Network+ study materials and subnetting principles.
質問 # 83
管理者は、企業ネットワークで使用するために SNMP サーバーをセットアップしており、MIB 内にデバイス ID を作成する必要があります。MIB の機能について説明しているのは次のうちどれですか。
- A. ポリシー適用ポイント
- B. DHCPリレーデバイス
- C. ネットワーク アクセス コントローラ
- D. イベント変換の定義ファイル
正解：D
解説：
* MIB (Management Information Base): A MIB is a database used for managing the entities in a communication network. The MIB is used by Simple Network Management Protocol (SNMP) to translate events into a readable format, enabling network administrators to manage and monitor network devices effectively.
* Function of MIB: MIBs contain definitions and information about all objects that can be managed on a network using SNMP. These objects are defined using a hierarchical namespace containing object identifiers (OIDs).
質問 # 84
ネットワーク管理者は、外部 DNS レコードがホストされている場所を変更する必要があります。このタスクを実行するために、管理者がレジストラに変更する必要があるレコードは次のどれですか。
- A. PTR
- B. CNAME
- C. NS
- D. SOA
正解：C
解説：
To change where the outside DNS records are hosted, the network administrator needs to update the NS (Name Server) records at the domain registrar. NS records specify the authoritative name servers for a domain, directing where DNS queries should be sent.
* NS (Name Server) Records: These records indicate the servers that are authoritative for a domain.
Changing the NS records at the registrar points DNS resolution to the new hosting provider.
* SOA (Start of Authority): Contains administrative information about the domain, including the primary name server.
* PTR (Pointer) Records: Used for reverse DNS lookups, mapping IP addresses to domain names.
* CNAME (Canonical Name) Records: Used to alias one domain name to another, not relevant for changing DNS hosting.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Discusses DNS records, their purposes, and how to manage them.
* Cisco Networking Academy: Provides training on DNS management and the role of different DNS record types.
* Network+ Certification All-in-One Exam Guide: Explains DNS records and their configuration for domain management.
質問 # 85
ヨーロッパにおける個人データのセキュリティと取り扱いについて、最も責任があると思われるのは次のどれですか?
- A. GDPR
- B. SCADA
- C. PCI DSS
- D. SAML
正解：A
解説：
Definition of GDPR:
General Data Protection Regulation (GDPR) is a regulation in EU law on data protection and privacy for all individuals within the European Union and the European Economic Area. It also addresses the transfer of personal data outside the EU and EEA areas.
Scope and Objectives:
GDPR aims to give individuals control over their personal data and to simplify the regulatory environment for international business by unifying the regulation within the EU.
It enforces rules about data protection, requiring companies to protect the personal data and privacy of EU citizens for transactions that occur within EU member states.
Comparison with Other Options:
SCADA (Supervisory Control and Data Acquisition): Refers to control systems used in industrial and infrastructure processes, not related to personal data protection.
SAML (Security Assertion Markup Language): A standard for exchanging authentication and authorization data between parties, not specifically for personal data protection.
PCI DSS (Payment Card Industry Data Security Standard): A set of security standards designed to ensure that all companies that accept, process, store or transmit credit card information maintain a secure environment, not specific to personal data protection in Europe.
Key Provisions:
GDPR includes provisions for data processing, data subject rights, obligations of data controllers and processors, and penalties for non-compliance.
Reference:
CompTIA Network+ study materials on regulatory and compliance standards.
質問 # 86
サーバー機器をラックに設置することで得られる最も可能性の高い利点は次のどれですか?
- A. 消費電力の減少
- B. 計算密度の向上
- C. 簡素化されたトラブルシューティングプロセス
- D. ネットワークパフォーマンスの向上
正解：B
解説：
Installing server equipment in a rack increases compute density by allowing multiple servers to be organized efficiently in a vertical configuration, saving space while housing more devices in a smaller footprint. This is critical for data centers and businesses with high hardware demands.
Simplified troubleshooting process (A): While racks can aid in organizing equipment, this is a secondary benefit, not the primary purpose.
Decreased power consumption (B): Rack installation does not directly reduce power usage; equipment power consumption remains the same.
Improved network performance (C): Racking servers does not inherently improve network performance; that depends on network configurations.
質問 # 87
ネットワーク管理者は、ネットワークの可視性を高めるためにデバイス監視を実装することを計画しています。ソリューションが提供するセキュリティは、認証と暗号化です。次のどれがこれらの要件を満たしていますか?
- A. SNMPv3
- B. Syslog
- C. SIEM
- D. ネットフロー
正解：A
解説：
SNMPv3 (Simple Network Management Protocol version 3) provides device monitoring with authentication and encryption. This enhances network visibility and security by ensuring that monitoring data is securely transmitted and access to network devices is authenticated.
Authentication: SNMPv3 includes robust mechanisms for authenticating users accessing network devices.
Encryption: It provides encryption to protect the integrity and confidentiality of the data being transmitted.
Network Management: SNMPv3 allows for detailed monitoring and management of network devices, ensuring better control and security.
Network Reference:
CompTIA Network+ N10-007 Official Certification Guide: Covers SNMP versions, their features, and security enhancements in SNMPv3.
Cisco Networking Academy: Provides training on implementing and securing SNMP for network management.
Network+ Certification All-in-One Exam Guide: Explains the benefits and security features of SNMPv3 for network monitoring.
質問 # 88
次のネットワーク トラフィック タイプのうち、ネットワーク上のすべてのノードに送信されるものはどれですか。
- A. エニーキャスト
- B. ユニキャスト
- C. ブロードキャスト
- D. マルチキャスト
正解：C
解説：
Broadcast traffic is sent to all nodes on the network. In a broadcast, a single packet is transmitted to all devices in the network segment. This is commonly used for tasks like ARP (Address Resolution Protocol) requests.
Broadcast Domain: All devices within the same broadcast domain will receive broadcast traffic.
Network Types: Ethernet networks commonly use broadcast traffic for certain functions, including network discovery and addressing.
IPv4 Broadcast: An IPv4 broadcast address (e.g., 255.255.255.255) ensures the packet is sent to all devices on the network.
Network Reference:
CompTIA Network+ N10-007 Official Certification Guide: Explains network traffic types, including broadcast, unicast, and multicast.
Cisco Networking Academy: Provides training on network communication methods and traffic types.
Network+ Certification All-in-One Exam Guide: Discusses different types of network traffic and their uses in various network scenarios.
Broadcast traffic is essential for network operations that require communication with all nodes, such as ARP requests or DHCP discovery messages.
質問 # 89
顧客が隣接する建物間にファイバー接続を追加しています。技術者がマルチモード ケーブルをファイバー パッチ パネルに終端します。技術者がファイバー パッチ ケーブルを接続した後、インジケータ ライトが点灯しません。技術者がこの問題のトラブルシューティングを行うために最初に試すべきことは次のどれですか。
- A. ファイバーのサイズを確認します。
- B. ケーブル配線に目視による欠陥がないか検査します。
- C. ファイバーを再終端します。
- D. 繊維を反転します。
正解：D
解説：
When working with fiber optic cables, one common issue is that the transmit (TX) and receive (RX) fibers might be reversed. The first step in troubleshooting should be to reverse the fibers at one end to ensure they are correctly aligned (TX to RX and RX to TX). This is a simple and quick step to rule out a common issue before moving on to more complex troubleshooting.
Reference: CompTIA Network+ study materials.
質問 # 90
ネットワーク技術者がアクセス ポートの設定を調べているときに、複数の VLAN が設定されていることに気付きました。ポートの設定方法を最もよく表しているのは次のうちどれですか。
- A. VLANが多すぎる
- B. 音声VLANの場合
- C. ネイティブVLANの場合
- D. デフォルトのVLANの場合
正解：B
解説：
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.
質問 # 91
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