[2024年07月]更新のCompTIA 220-1101日本語テストエンジンとPDFで完全版無料問題集を無料提供
最新版を今すぐ試そう220-1101日本語認定有効な試験問題集
質問 # 309
ユーザーのスマートフォンのバッテリー容量が 1 時間以内にフルから空になり始めました。ユーザーは最近スマートフォンに新しいアプリケーションをインストールしていません。IT 技術者は、スマートフォンのネットワーク使用率が非常に高いことに気づき、この問題がバッテリーの消耗に関連している可能性があると考えました。技術者が次に試すべきトラブルシューティング手順は次のうちどれですか?
- A. スマートフォンをWi-Fiネットワークに接続します。
- B. スマートフォンを再起動します。
- C. Bluetooth を無効にします。
- D. モバイル OS をアップデートします。
正解：B
解説：
The next troubleshooting step that the technician should attempt is to restart the smartphone. Restarting the smartphone can help resolve many common issues, such as battery drain, network utilization, app crashes, or performance slowdowns. Restarting the smartphone can do the following:
Clear the memory and cache of the smartphone, which can free up space and speed up the device.
Close any background apps or processes that may be consuming battery or network resources, such as syncing, updating, or streaming.
Reset the network settings and connections of the smartphone, which can improve the signal strength and quality.
Refresh the operating system and the user interface of the smartphone, which can fix any glitches or errors.
To restart the smartphone, the user can follow these steps:
Press and hold the power button of the smartphone until a menu appears on the screen.
Tap the option that says Restart, Reboot, or Power off and on.
Wait for the smartphone to turn off and then turn on again.
Enter the PIN, password, or pattern to unlock the smartphone.
Check the battery level and the network utilization of the smartphone.
If restarting the smartphone does not solve the problem, the technician may need to try other troubleshooting steps, such as updating the mobile OS, disabling Bluetooth, or connecting the smartphone to a Wi-Fi network. However, restarting the smartphone is usually the first and simplest step to try.
Reference:
How to stop "Mobile network standby" from draining my battery1
Battery life: Guide to everything that affects and drains your phone battery2 Mobile Network Standby Battery Drain; How To Fix It?3 Get the most life from your Android device's battery4 How to Fix Battery Drain from Mobile Network on Galaxy S235
質問 # 310
技術者が、印刷できないサーマルレシートプリンターのトラブルシューティングを行っています。機能を復元するために技術者が最初に行うべきことは次のうちどれですか?
- A. ロール紙の向きを反転します。
- B. サーマルヘッドが加熱していることを確認します。
- C. パソコンのプリンタードライバーを更新します。
- D. サーマルプリントヘッドを交換します。
正解：B
解説：
In the case of a thermal receipt printer that will not print, the first step in troubleshooting should be to ensure that the thermal head is heating up. Thermal printers operate by applying heat to a special thermally sensitive paper, creating marks on the paper to form text and images. If the thermal head is not heating up, it cannot create these marks, leading to no print output. Verifying that the thermal head is operational can help isolate the issue, whether it's a hardware malfunction of the thermal head itself or another problem in the printer.
References:
* CompTIA A+ Core 1 (220-1101) Exam Objectives, specifically sections dealing with printer technologies and troubleshooting methods, which would include understanding the operational basics of different types of printers, including thermal receipt printers.
* Fundamental knowledge of how thermal printers function, emphasizing the critical role of the thermal head in the printing process and the need to ensure it's operational when troubleshooting printing issues.
質問 # 311
IP アドレスを動的に配布できるデバイスは次のうちどれですか?
- A. ハブ
- B. スイッチ
- C. インジェクター
- D. ルーター
正解：D
解説：
Explanation
A router is a device that can dynamically distribute an IP address to the devices connected to its network using a protocol called DHCP (Dynamic Host Configuration Protocol). DHCP allows a router to automatically assign an IP address and other network configuration information to a device when it joins the network, without requiring manual intervention from the administrator. A router can also act as a gateway between different networks, such as a local area network (LAN) and the internet1.
A hub is a device that connects multiple devices on a network and forwards data packets between them.
However, a hub does not assign IP addresses or perform any routing functions. A hub operates at the physical layer of the OSI model and does not understand IP addresses or other network protocols.
A switch is a device that connects multiple devices on a network and forwards data packets between them based on their MAC addresses. A switch can improve the performance and security of a network by reducing collisions and isolating traffic. However, a switch does not assign IP addresses or perform any routing functions. A switch operates at the data link layer of the OSI model and does not understand IP addresses or other network protocols.
An injector is a device that provides power to another device over an Ethernet cable, such as a wireless access point or a security camera. This is also known as Power over Ethernet (PoE). An injector does not assign IP addresses or perform any routing functions. An injector operates at the physical layer of the OSI model and does not understand IP addresses or other network protocols.
質問 # 312
技術者は、オフィスのネットワーク スイッチから工場のフロアにあるワークステーションまで、約 275 フィート (84 m) の距離に Cat 5 UTP ケーブルを設置しました。技術者は、ワークステーションの NIC で緑色の LED とオレンジ色の LED が点滅しているのを確認します。技術者が最初に行うべきことは次のうちどれですか?
- A. Cat 5 UTP ケーブル全体を Cat 5 STP ケーブルに交換します。
- B. 接続の緩み、曲がり、物理的な損傷がないか確認してください。
- C. 電源付きハブを Cat 5 UTP ケーブル配線の中間点のできるだけ近くに取り付けます。
- D. ケーブル全体をマルチモード ファイバーにアップグレードします。
正解：C
解説：
Explanation
The correct answer is B. Install a powered hub as close as possible to the halfway point in the Cat 5 UTP cable run.
The problem is most likely caused by the excessive length of the Cat 5 UTP cable, which exceeds the maximum limit of 100 meters (328 feet) for Ethernet over twisted pair12. This can result in signal degradation, interference, and packet loss, which can affect the network performance and connectivity. The flashing green LED indicates that the NIC is receiving data, while the flashing orange LED indicates that the NIC is sending data3. However, these LEDs do not indicate the quality or speed of the data transmission, which may be poor due to the long cable run.
The best solution is to install a powered hub as close as possible to the halfway point in the Cat 5 UTP cable run. A powered hub is a device that can amplify and regenerate the signal, as well as provide additional ports for connecting more devices. A powered hub can extend the effective range of the cable and improve the network performance and connectivity1.
The other options are not the best solutions for this problem. Checking for loose connections, pinched bends, and physical damage is a good troubleshooting step, but it is unlikely to solve the problem if the cable is too long. Replacing the entire run of Cat 5 UTP cable with Cat 5 STP cable may reduce some interference, but it will not solve the problem of signal degradation due to the length. Upgrading the entire cable run to multimode fiber may provide better performance and range, but it will also require replacing the NICs and switches, which will be costly and time-consuming.
質問 # 313
技術者が新しい PC を組み立てました。数分後、コンピュータの速度が低下し、自動的にシャットダウンします。
失敗の原因として最も可能性が高いのは次のうちどれですか?
- A. サーマルグリスを使用しなかった。
- B. マザーボードに互換性がありません。
- C. GPU には追加の電力が必要です。
- D. メモリが不足しています。
正解：A
解説：
The most likely cause of the failure is A. Thermal paste was not used.
Thermal paste, also known as thermal grease or thermal compound, is a substance that is applied between the CPU and the heat sink to improve the heat transfer and cooling of the CPU. Thermal paste fills the gaps and irregularities between the CPU and the heat sink, creating a better contact and reducing the thermal resistance .
According to some web search results , some signs and symptoms of not using thermal paste or using it incorrectly are:
*The CPU overheats and slows down or shuts down to prevent damage
*The CPU fan spins faster and louder to try to cool down the CPU
*The PC performance drops or becomes unstable
*The PC crashes or displays errors or blue screens
To fix this issue, the technician should apply thermal paste properly between the CPU and the heat sink, following these steps :
*Turn off the PC and unplug it from the power source
*Open the PC case and locate the CPU fan and heat sink
*Remove the CPU fan and heat sink from the motherboard
*Clean the surfaces of the CPU and heat sink with a lint-free cloth and alcohol
*Apply a small amount of thermal paste (about the size of a grain of rice) in the center of the CPU
*Reattach the heat sink and CPU fan to the motherboard, making sure they are aligned and secured
*Close the PC case and plug it back to the power source
The GPU needs additional power, the memory is insufficient, or the motherboard is incompatible are not likely causes of the failure, since they would not cause the PC to overheat and shut down after a few minutes. The GPU needs additional power if it has a high power consumption that exceeds the capacity of the power supply or the PCIe slot. The memory is insufficient if it cannot handle the applications or tasks that are running on the PC. The motherboard is incompatible if it does not support the CPU, RAM, or other components that are installed on it. These issues may cause poor performance, errors, or crashes, but not overheating and shutting down.
質問 # 314
次のクラウド モデルのうち、組織がクラウドだけでなくサイト上でもデータを保持できるのはどれですか?
- A. プライベート
- B. パブリック
- C. コミュニティ
- D. ハイブリッド
正解：D
解説：
Explanation
The correct answer is C. Hybrid.
A hybrid cloud model is a combination of two or more different cloud models, such as public, private, community, or on-premises. A hybrid cloud model allows an organization to retain data on site as well as in the cloud, depending on the security and performance requirements of the data. A hybrid cloud model can also provide flexibility, scalability, and cost-efficiency for the organization12.
A public cloud model is a cloud service that is available to anyone over the internet. A public cloud model does not allow an organization to retain data on site, as the data is stored and managed by a third-party provider. A public cloud model can offer lower costs, higher availability, and easier access, but it may have less security and control over the data12.
A community cloud model is a cloud service that is shared by a group of organizations that have similar needs or goals. A community cloud model does not allow an organization to retain data on site, as the data is stored and managed by a third-party provider or one of the participating organizations. A community cloud model can offer higher security, privacy, and compliance, but it may have higher costs and lower availability than a public cloud model12.
A private cloud model is a cloud service that is exclusively used by a single organization. A private cloud model can allow an organization to retain data on site or in the cloud, depending on the configuration of the private cloud. A private cloud model can offer higher security, control, and customization, but it may have higher costs and lower scalability than a public cloud model12.
質問 # 315
安全でないリモート アクセス プロトコルは次のうちどれですか?
- A. Telnet
- B. SSH
- C. SFTP
- D. HTTPS
正解：A
解説：
Explanation
Telnet is an unsecure remote access protocol that allows a user to connect to a remote device and execute commands on it12. Telnet does not encrypt the data that is transmitted between the user and the device, which means that anyone who intercepts the network traffic can read the information, including usernames and passwords12. Telnet also does not authenticate the user or the device, which means that anyone can impersonate either party and gain unauthorized access1.
質問 # 316
技術者は、新しいハイエンド ワークステーション用の RAM を選択しています。マザーボードには、DDR5 メモリをサポートするスロットが 8 つあります。パフォーマンスを最適化するために技術者が行うべきことは次のうちどれですか?
- A. 最小限のモジュール数を使用します。
- B. 仮想RAMを増やします。
- C. メモリタイミングを増やします。
- D. すべてのチャンネルを使用します。
正解：D
解説：
The best option that the technician should do to optimize performance is D. Utilize all channels. This option means that the technician should install the RAM modules in a way that maximizes the number of memory channels that are used by the motherboard. Memory channels are pathways that connect the memory controller to the RAM modules, and they allow data to be transferred between them. The more memory channels that are used, the higher the memory bandwidth and performance1.
DDR5 memory supports up to eight memory channels per module, which is twice as many as DDR42.
However, not all motherboards can support eight channels per module, and some may only support four or two channels per module. Therefore, the technician should check the motherboard specifications and manual to determine how many memory channels it supports and how to install the RAM modules accordingly.
For example, if the motherboard supports four channels per module, then the technician should install four RAM modules in slots 1, 3, 5, and 7 to use all 16 available channels. If the motherboard supports two channels per module, then the technician should install eight RAM modules in all slots to use all 16 available channels. If the technician installs fewer modules than the number of slots, then some channels will be left unused and the performance will be lower1.
質問 # 317
ラップトップ PC ユーザーがハードドライブの問題を報告しています。ファイル システム チェックでは、すべてのファイルにアクセス可能であり、ファイル システムがクリーンであることが示されます。チェック後も、PC はハード ドライブ エラー メッセージを発行します。エラーの原因として最も可能性が高いのは次のうちどれですか?
- A. IOPS エラー
- B. SMART 失敗
- C. DIMM の故障
- D. RAID 障害
正解：B
解説：
If the filesystem check shows that all files are accessible and the filesystem is clean, but a hard drive error message persists, it's possible that the hard drive is experiencing S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) failure. This is a warning system built into hard drives to alert users of potential issues before they become critical. Reference: CompTIA A+ Certification Exam Core 1 Exam Objectives - 3.3 Given a scenario, troubleshoot mobile device issues
質問 # 318
ネットワーク技術者はパッチ ケーブルを作成する任務を負っています。RJ45 コネクタがケーブルに接続されても剥がれることはありません。この問題を解決するには、次のどのツールが必要ですか?
- A. ケーブルテスター
- B. ループバックプラグ
- C. パンチダウンツール
- D. クリンパ
正解：D
解説：
A crimper is a tool that is used to crimp (attach) an RJ45 connector onto the end of a patch cable. The crimper applies pressure to the connector to make a permanent connection between the connector and the cable, ensuring that the connector will stay attached to the cable.
A cable tester is used to test the connectivity of a network cable. A punchdown tool is used to terminate network cables in a patch panel or keystone jack. A loopback plug is a diagnostic tool that is used to test network interfaces by simulating network traffic.
Reference: CompTIA A+ Core 1 Exam Guide, page 92.
質問 # 319
ソフトウェア開発者にとって、クライアント側仮想化の使用例として最も可能性が高いのは次のうちどれですか?
- A. 運用コストの削減
- B. 異なるオペレーティング システムでのテスト
- C. アプリケーションのパフォーマンスの向上
- D. 物理マシンのセキュリティを強化する
正解：B
解説：
Explanation
The most likely use case for client-side virtualization for a software developer is D. Testing on different operating systems.
Client-side virtualization is a type of virtualization that allows a single physical machine, such as a laptop or a desktop, to run multiple virtual machines, each with its own operating system and applications. Client-side virtualization can provide several benefits, such as:
Increasing the application performance by allocating more resources to the virtual machine that runs the application.
Enhancing the security of physical machines by isolating the virtual machines from each other and from the host machine, and preventing malware or attacks from spreading or affecting the data.
Reducing the operational costs by consolidating multiple physical machines into one, and saving on hardware, software, and energy expenses.
However, the most likely use case for client-side virtualization for a software developer is testing on different operating systems. This means that a software developer can use client-side virtualization to create and run different virtual machines with different operating systems, such as Windows, Linux, or Mac OS, and test how their software works and performs on each of them. This can help the software developer to ensure the compatibility, functionality, and quality of their software across different platforms and environments. It can also help the software developer to debug and fix any issues or errors that may arise on different operating systems.
For more information about client-side virtualization and its use cases, you can refer to the following web search results: [What Is Client-Side Virtualization?], [Client-Side Virtualization: Benefits and Challenges],
[How Client-Side Virtualization Can Help Developers].
質問 # 320
サーバー ルームで仮想サーバーと高速ストレージを接続するために使用されるネットワーク タイプは次のうちどれですか?
- A. パン
- B. WAN
- C. SAN
- D. 男
正解：C
解説：
Explanation
A Storage Area Network (SAN) is a dedicated, high-speed network that connects servers to data storage devices. SANs are used in server rooms to provide high-speed storage access to virtual servers.
質問 # 321
顧客の仮想マシンの稼働時間を最大限に確保するには、データセンターのハードウェア技術者が実装する必要があるのは次のうちどれですか?
- A. 無停電電源装置
- B. クラウドストレージバックアップ
- C. ラインコンディショナー
- D. 交流電圧調整器
正解：A
解説：
Explanation
An uninterruptible power supply (UPS) can help ensure maximum uptime for customers' virtual machines by providing a backup power source in case of a power outage or other power-related issues. A line conditioner and AC voltage regulator are designed to stabilize the power supply, but do not provide backup power. Cloud storage backup is a way to backup data, but does not directly impact uptime. References: CompTIA A+ Certification Exam: Core 1 - Page 159
質問 # 322
ネットワーク ジャックの前面プレートのラベルは次のうちどれを参照する必要がありますか?
- A. VLAN 識別
- B. パッチパネルポート
- C. MACアドレス
- D. 使用中のスイッチポート
正解：B
解説：
A network jack faceplate is a device that covers and protects the network jack or outlet on a wall or a floor. A network jack or outlet is a physical interface that allows a network cable, such as an Ethernet cable, to be plugged into a network device, such as a computer or a printer. A network jack faceplate usually has one or more ports that correspond to different types of network cables, such as RJ-45, RJ-11, or coaxial.
A label on a network jack faceplate should refer to the patch panel port that the network jack or outlet is connected to. A patch panel is a device that connects multiple network cables in an organized and convenient way. A patch panel has a number of ports that correspond to different cables, such as Ethernet, coaxial, or fiber-optic cables. A patch panel can help simplify the wiring and management of a network, as well as provide flexibility and scalability for adding or changing network devices.
By labeling the network jack faceplate with the patch panel port, the network technician can easily identify and trace the cable that is connected to the network jack or outlet. This can help to troubleshoot and resolve network issues, such as connectivity, performance, or configuration problems. It can also help to avoid confusion or errors when installing or modifying network cables.
質問 # 323
コストを管理するために、企業は限られた数のユーザーに会社用電話を提供します。 これらのユーザーの 1 人が、その電話ではインターネットが使用できなくなったため、サポート チケットを開きます。 携帯電話接続で居眠りをします。 ユーザーは、ユーザーの子供が、そのユーザーの子供が、複数の映画をストリーミングする前に電話が機能していたことを認めます。デバイス 電話機がインターネットを閲覧できない理由を説明しているのは次のうちどれですか?
- A. 子供が誤って近所の WLAN に接続しました
- B. 会社のグループ ポリシーによりデバイスが無効になりました
- C. デバイスにはデータの上限があり、その制限に達しています
- D. デバイスのプランは未払いです
正解：C
解説：
It is common for companies to place a data cap on the devices they provide to their employees, to control costs. If a user has exceeded the data cap, the phone may no longer allow internet browsing over a cellular connection. This is usually because the cellular data usage has exceeded the allotted amount for the particular plan the device is on, and the service provider has temporarily suspended the data connection.
It is unlikely that the child accidentally connected to a neighbor's WLAN because this would not affect the cellular data connection. Similarly, it is unlikely that the company's group policy has disabled the device, as this would likely affect all devices under the same policy. If the device's plan has been unpaid, the service provider would likely temporarily suspend all services, not just the cellular data connection.
質問 # 324
技術者が、印刷できないサーマルレシートプリンターのトラブルシューティングを行っています。機能を復元するために技術者が最初に行うべきことは次のうちどれですか?
- A. ロール紙の向きを反転します。
- B. パソコンのプリンタードライバーを更新します。
- C. サーマルプリントヘッドを交換します。
- D. サーマルヘッドが加熱していることを確認します。
正解：A
解説：
A thermal receipt printer uses heat to print on thermal paper, which has a special coating that reacts to heat and produces black marks. If the paper roll is inserted in the wrong orientation, the printer will not be able to print anything on the paper. Therefore, the first thing the technician should do is to check if the paper roll is loaded correctly, with the paper feeding under, not over. This is a common and easy mistake to fix, and it does not require any software or hardware changes.
Reference
* Troubleshooting Your Thermal Printer Problems - Thermal POS Receipt Printer Tips & Tricks, paragraph 2
* POS Thermal Receipt Printer Troubleshoot - Not Printing Evenly, video at 0:15
* Receipt Printer Troubleshooting - Shopfront, bullet point 2
質問 # 325
技術者が Web クラスターに対する脅威を軽減しています。Web クラスターの公開インターフェイスに対する不要なトラフィックを軽減するために技術者が使用するのに最も適切なツールは次のどれですか?
- A. 物理ファイアウォール
- B. 侵入検知システム
- C. デバイスの暗号化
- D. ウイルス対策/マルウェア対策
正解：A
解説：
A physical firewall is a hardware device that filters and blocks unwanted or malicious traffic from entering or leaving a network. A physical firewall can be configured with rules and policies to allow or deny traffic based on various criteria, such as source and destination IP addresses, ports, protocols, applications, etc. A physical firewall can also provide logging and monitoring capabilities to detect and prevent network attacks12.
A physical firewall is the most appropriate tool for a technician to use to mitigate threats to web clusters, which are groups of web servers that work together to provide high availability and scalability for web applications. Web clusters are often exposed to the internet and face various types of threats, such as denial-of-service (DoS) attacks, brute force attacks, SQL injection attacks, cross-site scripting (XSS) attacks, etc. A physical firewall can protect the web clusters' public-facing interface by filtering and blocking the unwanted or malicious traffic before it reaches the web servers, thus reducing the risk of compromise or downtime34.
The other options are not as effective or relevant as a physical firewall for mitigating threats to web clusters.
Device encryption is a process of transforming data into an unreadable form using a secret key, which can prevent unauthorized access to the data if the device is lost or stolen. However, device encryption does not prevent network attacks or filter traffic, and it may not apply to web clusters that use shared storage or cloud services. Intrusion detection system (IDS) is a software or hardware tool that monitors network traffic and alerts the administrator of any suspicious or malicious activity. However, IDS does not block or filter traffic, and it may not be able to prevent or stop an attack in progress. IDS is often used in conjunction with a firewall, not as a replacement. Antivirus/anti-malware is a software tool that scans and removes viruses, worms, trojans, spyware, ransomware, and other malicious software from a device. However, antivirus/anti-malware does not filter or block network traffic, and it may not be able to detect or prevent some web-based attacks, such as XSS or SQL injection. Antivirus/anti-malware is also often used in conjunction with a firewall, not as a replacement.
References:
* CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 5: Networking, Section 5.4:
Network Devices, Page 233
* CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Exam Cram, Chapter 5: Networking, Section
5.4: Network Devices, Page 197
* CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Pearson uCertify Course and Labs and Textbook Bundle, Chapter 5: Networking, Section 5.4: Network Devices, Page 234
* CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Cert Guide, Chapter 5: Networking, Section
5.4: Network Devices, Page 205
* CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 9: Security, Section 9.3: Device Security, Page 419
* CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 9: Security, Section 9.4: Network Security, Page 431
* CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 9: Security, Section 9.5: Malware and Threats, Page 443
質問 # 326
ユーザーは、最速の速度と最大のストレージ容量を実現するために、デスクトップ上で RAID を構成したいと考えています。この要求に対応するには、技術者が次の RAID タイプのどれを構成する必要がありますか?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
解説：
RAID 0 is a configuration that stripes data across multiple disks without parity or redundancy. It provides the fastest speed and maximum storage capacity among the RAID types listed, but it also has no fault tolerance. RAID 1 mirrors data across two disks, providing redundancy but halving the storage capacity. RAID 5 stripes data across three or more disks with parity, providing fault tolerance but reducing the storage capacity by one disk. RAID 10 combines mirroring and striping across four or more disks, providing both speed and redundancy but reducing the storage capacity by half.
質問 # 327
ある企業は、アプリケーションのテストにクライアント側の視覚化を使用したいと考えています。この目標を最もよくサポートするのは次の構成のうちどれですか?
- A.
- B.
- C.
- D.
正解：A
質問 # 328
ユーザーがネットワークにアクセスできないと報告しました。ヘルプ デスク技術者は、ユーザーのワークステーション上の APIPA に気づきました。技術者が最初に調査すべきサービスは次のうちどれですか?
- A. DHCP
- B. AAA
- C. DNS
- D. 半径
正解：A
解説：
DHCP (Dynamic Host Configuration Protocol) is a network service that automatically assigns IP addresses and other configuration parameters to devices that request them. DHCP simplifies the management of IP addresses and avoids conflicts and errors67. An APIPA (Automatic Private IP Addressing) is a feature of Windows that assigns a default IP address in the range of 169.254.x.x to a device when it cannot obtain a valid IP address from a DHCP server. An APIPA indicates that there is a problem with the DHCP service or the network connectivity between the device and the DHCP server89. Therefore, the technician should investigate the DHCP service first to check if it is running, configured correctly, and has enough available IP addresses to assign. The other services are not directly related to the IP address assignment. RADIUS (Remote Authentication Dial-In User Service) is a protocol that provides centralized authentication, authorization, and accounting for network access10. AAA (Authentication, Authorization, and Accounting) is a framework that controls the access and usage of network resources11. DNS (Domain Name System) is a service that resolves domain names into IP addresses12.
Reference
6: What is DHCP (Dynamic Host Configuration Protocol)? - Definition from WhatIs.com
7: How DHCP works - Windows Server | Microsoft Docs
8: What is APIPA (Automatic Private IP Addressing)? - Definition from WhatIs.com
9: How to Fix an IP Address Conflict
10: What is RADIUS (Remote Authentication Dial-In User Service)? - Definition from WhatIs.com
11: What is AAA (authentication, authorization, and accounting)? - Definition from WhatIs.com
12: What is DNS (Domain Name System)? - Definition from WhatIs.com
質問 # 329
ネットワーク エンジニアは最近、クラウド環境に新しいアプリケーション サーバーを展開しました。システム内の単一障害点を防ぐために、次のどれを実装する必要がありますか?
- A. 共有リソース
- B. RAID
- C. 急速な弾性
- D. 高可用性
正解：D
解説：
High availability is a design principle that ensures a system or service can operate continuously without significant downtime or disruption. High availability can be achieved by implementing redundancy, failover, load balancing, and backup strategies. High availability can prevent a single point of failure within the system, which means that if one component fails, another one can take over its function. Rapid elasticity is the ability to scale up or down the resources of a system according to the demand, but it does not prevent a single point of failure. RAID is a method of storing data across multiple disks to provide redundancy and performance, but it does not prevent a single point of failure at the server level. Shared resources are the resources that are pooled and accessed by multiple users or systems, but they do not prevent a single point of failure either. References:
https://www.comptia.org/blog/what-is-cloud-computing
質問 # 330
技術者は、ハイエンドのグラフィックス カード、3 GHz プロセッサ、および 2 つの冷却ファンを搭載したワークステーションに電源を取り付けています。新しい電源装置を取り付ける前に、技術者が確認すべき仕様は次のうちどれですか?
- A. シャーシの換気
- B. ケーブルの色分け
- C. マザーボードのファームウェア
- D. ワット数
正解：D
解説：
The most important specification that the technician should verify before installing the new power supply is A) The wattage.
The wattage of a power supply is the measure of how much power it can deliver to the components of a computer. The wattage of a power supply should match or exceed the total power consumption of the computer, otherwise the computer may not function properly or may experience instability, overheating, or damage12.
To calculate the total power consumption of a computer, the technician can use a tool such as a power supply calculator, which can estimate the required wattage based on the components and features of the computer. For example, using one of the web search results3, I entered the following information:
* CPU: 3 GHz processor
* GPU: High-end graphics card
* RAM: 16 GB DDR4
* SSD: 1 x 500 GB
* HDD: 1 x 1 TB
* Optical Drive: 1 x DVD-RW
* Fans: 2 x 120 mm
* Other Devices: Keyboard, Mouse, Monitor
The tool estimated that the recommended PSU wattage for this computer is 550 W. Therefore, the technician should verify that the new power supply has at least this wattage before installing it.
The chassis ventilation, the motherboard's firmware, and the cables' color coding are not as important as the wattage for installing a new power supply. The chassis ventilation is related to the airflow and cooling of the computer, which can affect the performance and lifespan of the components. The motherboard's firmware is the software that controls the basic functions of the motherboard, such as booting, input/output, and memory management. The cables' color coding is a standard way of identifying the function and polarity of the wires in a power supply. However, none of these specifications are directly related to the power delivery or compatibility of the new power supply.
質問 # 331
ユーザーから、ラップトップでの接続が制限されているか、接続ができないと報告されました。技術者が ipconf ig /all を実行すると、次の結果が得られます。
この問題の原因として最も考えられるのは次のうちどれですか?
- A. DNS解決
- B. IP アドレスが重複しています
- C. ARP キャッシュ
- D. DHCP障害
正解：D
質問 # 332
空港の現場技術者は、出発便に関する情報を表示する画面の表示に問題があるという内容のサポート チケットを受け取りました。技術者は、ケース履歴を確認しているときに、ターミナル ゲートが改装されたときに、すべてのフライト情報画面が最近移動されたことに気づきました。画面に電力が供給されていることを確認した後、技術者が実行する必要があるアクションは次のうちどれですか?
- A. 画面への入力接続が安全であることを確認してください。
- B. 動作する画面とケーブルを交換します。
- C. 画面が出力デバイスと互換性があるかどうかを判断します。
- D. データを出力している機器の電源が入っているか確認してください。
正解：A
解説：
The technician should ensure the input connections to the screen are secure1. The screen may not be receiving the signal from the device outputting the data if the input connections are not secure1. Swapping cables with a screen that works is not likely to be the correct option1
質問 # 333
ラップトップで使用できるディスプレイの種類は次のうちどれですか?
- A. ブラウン管
- B. プラズマ
- C. 有機EL
- D. DLP
正解：C
解説：
The correct answer is A. OLED.
OLED stands for Organic Light-emitting Diode, and it is one of the three display types available for laptops, along with TN (Twisted Nematic) and IPS (In-Plane Switching) panels1. OLED displays use organic compounds that emit light when an electric current is applied, unlike LCD displays that use a backlight to illuminate the pixels. OLED displays have several advantages over LCD displays, such as higher contrast, wider viewing angles, faster response times, and lower power consumption2. However, OLED displays are also more expensive, less common, and more prone to burn-in than LCD displays2.
CRT (Cathode Ray Tube), DLP (Digital Light Processing), and Plasma are not display types for laptops. CRT is an old technology that uses a vacuum tube to project an image on a phosphor screen. CRT monitors are bulky, heavy, and consume a lot of power3. DLP is a technology that uses a digital micromirror device and a light source to project an image on a screen or a wall. DLP is mainly used for projectors, not laptops4. Plasma is a technology that uses gas-filled cells that emit light when an electric current is applied. Plasma displays are mainly used for large-screen TVs, not laptops.
References:
1: Laptop Display 101: Display Types (TN, IPS, or OLED)
2: OLED vs LCD: which screen tech should you choose for your next laptop? | TechRadar
3: What is a CRT Monitor? - Definition from Techopedia
4: What is DLP (Digital Light Processing)? - Definition from WhatIs.com What is plasma display? - Definition from WhatIs.com
質問 # 334
......
100%合格保証付きの素晴らしい220-1101日本語試験問題PDF：https://jp.fast2test.com/220-1101J-premium-file.html