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質問 # 90
攻撃者は、ある場所への侵入や機密情報へのアクセスを得るために、破壊的な戦術を使用してターゲットの信頼を獲得します。このシナリオを最もよく説明しているのは次のうちどれですか?
- A. 盗聴
- B. パス上攻撃
- C. フィッシング攻撃
- D. ソーシャルエンジニアリング
正解：D
解説：
The scenario where an attacker is using subversive tactics to gain the trust of a target in order to obtain entry to a location or access to confidential information is best described as social engineering. Social engineering is a type of attack that exploits human psychology and behavior to manipulate people into performing actions or revealing information that benefits the attacker. Social engineering can take various forms, such as phishing, vishing, baiting, quid pro quo, pretexting, or tailgating. Phishing attack is a type of social engineering attack that involves sending fraudulent emails or messages that appear to come from legitimate sources to trick recipients into clicking on malicious links or attachments, or providing personal or financial information. On-path attack is a type of network attack that involves intercepting or modifying data packets that are transmitted between two parties on a network. Eavesdropping is a type of network attack that involves listening to or capturing data packets that are transmitted between two parties on a network. Reference: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 7: Security Concepts1
質問 # 91
次のうち、国際テキストデータを表すために最も使用される可能性が高いのはどれですか？
- A. Hexadecimal
- B. Unicode
- C. ASCII
- D. Octal
正解：B
解説：
Unicode is the most likely encoding standard used to represent international text data. Unicode is a universal character set that can encode over a million characters from different languages, scripts, symbols, and emojis. Unicode supports multiple encoding forms, such as UTF-8, UTF-16, and UTF-32, that use different numbers of bytes to represent each character. Unicode enables consistent and interoperable representation and processing of text data across different platforms and applications. Reference : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 138.
質問 # 92
プログラマは、日付、時刻、名前、金額などの情報を保存する必要がある新しいアプリケーション用のデータベースを選択します。これは次のデータベース機能のどれに該当しますか?
- A. 速度
- B. 同時実行性
- C. さまざまな
- D. スケーラビリティ
正解：C
解説：
Variety is the database feature that refers to the ability to store different types of data, such as dates, times, names, and amounts. A database that supports variety can handle diverse and complex data formats, which is useful for applications that need to store information from various sources or domains. Concurrency, speed, and scalability are also important database features, but they are not directly related to the types of data that can be stored. References: CompTIA IT Fundamentals+ FC0-U61 Cert Guide, Chapter 25: Database Concepts, page 481; CompTIA IT Fundamentals (ITF+) Study Guide, Chapter 7: Database Fundamentals, page 173.
質問 # 93
システム管理者は、毎日特定の時間にスクリプトを実行したいと考えています。これを達成するための最良の方法は次のうちどれですか？
- A. プロセス管理を実行します。
- B. スクリプトを実行するようにリマインダーを設定します。
- C. システムの日付と時刻を設定します。
- D. タスクのスケジューリングを実行します。
正解：D
解説：
Explanation
Task scheduling is a function of an operating system that allows users to run a script or a program at a certain time or interval automatically. Task scheduling would be the best way for a systems administrator to run a script at a certain time every day without manual intervention. Perform process management, set the system date and time, and set a reminder to run the script are not options that would allow the systems administrator to run a script at a certain time every day automatically. References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 3: Computing Components, page 128.
質問 # 94
最近設置されたワイヤレスアクセスポイントからのブロードキャスト信号は、予想ほど強くありません。次のアクションのうちどれが信号強度を改善しますか？
- A. WPA2-Enterpriseを有効にします。
- B. 802.11bから802.11gに更新します。
- C. WiFi保護セットアップを使用します。
- D. EMIの発生源が除去されていることを確認します。
正解：D
解説：
The broadcast signal from a wireless access point can be affected by various factors, such as distance, obstacles, interference, and configuration. One of the possible causes of weak signal strength is electromagnetic interference (EMI), which is the disruption of wireless communication by devices or objects that emit electromagnetic waves, such as microwaves, cordless phones, power lines, or fluorescent lights. To improve the signal strength, the user should ensure that sources of EMI are removed or relocated away from the wireless access point and the wireless devices78. Reference := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 4: Networking Concepts4; How to Improve Your Wireless Network Performance - HP Tech Takes9
質問 # 95
会社の幹部は、DVDから会社のトレーニングビデオを見たいと考えています。次のコンポーネントのどれがこのタスクを達成しますか？
- A. ソリッドステートドライブ
- B. 光学ドライブ
- C. フラッシュドライブ
- D. ハードディスクドライブ
正解：B
解説：
An optical drive is a component that can accomplish the task of viewing company training videos from a DVD. An optical drive is a device that can read and write data from optical discs, such as CDs, DVDs, or Blu-ray discs. An optical drive uses a laser beam to access the data stored on the disc. An optical drive can play video or audio files from optical discs, as well as install software or store data.
A hard disk drive (HDD) is a component that can store large amounts of data on magnetic platters, but it cannot read or write data from optical discs. A solid state drive (SSD) is a component that can store data on flash memory chips, but it cannot read or write data from optical discs. A flash drive is a component that can store data on flash memory chips and connect to a USB port, but it cannot read or write data from optical discs.
質問 # 96
最も安全なファイルシステムは次のうちどれですか?
- A. NTFS
- B. FAT32
- C. exFAT
- D. NFS
正解：A
解説：
NTFS stands for New Technology File System, which is the most secure file system among the given options. NTFS is a file system that was developed by Microsoft for Windows operating systems. NTFS supports features such as encryption, compression, permissions, quotas, and auditing, which enhance the security and performance of the file system. FAT32 stands for File Allocation Table 32, which is a file system that was developed by Microsoft for older versions of Windows and DOS operating systems. FAT32 does not support encryption, compression, permissions, quotas, or auditing, and it has limitations on the size of files and partitions that it can handle. NFS stands for Network File System, which is a file system that was developed by Sun Microsystems for Unix and Linux operating systems. NFS allows users to access files on remote servers as if they were local files, but it does not support encryption or compression. exFAT stands for Extended File Allocation Table, which is a file system that was developed by Microsoft for flash drives and other removable media. exFAT supports larger files and partitions than FAT32, but it does not support encryption, compression, permissions, quotas, or auditing. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 4: Operating System Fundamentals
質問 # 97
ある会社がソフトウェア プログラムを購入しました。EULA では、このソフトウェアは企業が望むだけ多くのコンピュータにインストールできると規定されていますが、ソフトウェアを使用できるのは一度に 4 人のユーザーのみです。これは次のタイプのライセンスのうちどれに該当しますか?
- A. オープンソースライセンス
- B. サブスクリプションライセンス
- C. 同時ライセンス
- D. グループライセンス
正解：C
解説：
A concurrent license is a type of software license that allows a software program to be installed on as many computers as the company wants, but only a limited number of users can use the software at the same time. A concurrent license is based on the number of simultaneous users rather than the number of installations. A concurrent license can help a company save money and resources by sharing the software among multiple users who do not need to use the software all the time. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 211.
質問 # 98
システム管理者は、RAIDテクノロジーを使用して新しいサーバーをセットアップしています。アレイ内の1つのハードドライブに障害が発生した場合、データは別のドライブに保存され、データの損失を防ぎます。これが説明するビジネス継続性の概念は次のうちどれですか？
- A. フォールトトレランス
- B. アクセスの復元
- C. データの復元
- D. ファイルのバックアップ
正解：A
解説：
Explanation
Fault tolerance is the ability of a system to continue functioning even when one or more components fail.
RAID (Redundant Array of Independent Disks) is a technology that uses multiple hard drives to store data in a way that improves performance and reliability. If one hard drive in the RAID array fails, the data can be recovered from another drive without losing any information. This is an example of fault tolerance.
References: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 6:
Infrastructure Concepts, page 240.
質問 # 99
会議中、管理者らは、不適切な Web サイトに機密情報が掲載されていたいくつかの事例について話しました。同社はまた、ファイアウォールがそのような問題を防ぐために特定のトラフィックをフィルタリングしていないことも発見しました。次のうち、機密情報を漏洩した可能性が最も高いのはどれですか?
- A. ソーシャルメディア
- B. ビデオ共有 Web サイト
- C. インスタント メッセージング
- D. モバイル アプリケーション
正解：A
解説：
Social media platforms are common channels through which confidential information may inadvertently or maliciously be exposed due to their wide accessibility and the ease with which information can be shared. The scenario described suggests that the firewall did not filter certain types of outbound traffic, which could include access to social media sites where sensitive data might be posted or leaked.
Reference:
CompTIA IT Fundamentals documents often emphasize the role of network security protocols and configurations, including content filtering and firewalls, as critical for protecting against data leaks, particularly via platforms like social media.
質問 # 100
開発者は、銀行口座の残高を小数点以下 2 桁以内で計算するスクリプトを作成しています。開発者は残高を保存するために次のデータ型のうちどれを選択する必要がありますか?
- A. ブール値
- B. 整数
- C. 文字
- D. フロート
正解：D
解説：
Explanation
A float is a data type that can store decimal numbers, such as 3.14 or 0.01. This is suitable for calculating a bank account balance within two decimal places, as it can represent fractions of a dollar. A boolean is a data type that can only store true or false values, which is not useful for numerical calculations. An integer is a data type that can store whole numbers, such as 1 or 100, but not decimals. A char is a data type that can store a single character, such as 'a' or '9', but not multiple characters or decimals. References: CompTIA IT Fundamentals (ITF+) Study Guide: Exam FC0-U61, Second Edition, Chapter 4: Software Development Concepts, page 1371
質問 # 101
従業員のラップトップは、コーヒーショップで使用されている場合、インターネットに接続しません。次のうち、最も可能性の高い原因はどれですか？
- A. 完全なブラウザキャッシュ
- B. スクリプトブロッカー
- C. プロキシ設定
- D. プライベートブラウジング
正解：C
解説：
Proxy settings are the configuration options that determine how a computer or device connects to the Internet through a proxy server. A proxy server is an intermediary server that acts as a gateway between the computer or device and the Internet. Proxy servers can provide security, privacy, caching, filtering, or access control functions. Proxy settings can affect the Internet connectivity of a computer or device depending on the proxy server's availability, location, or rules. If an employee's laptop does not connect to the Internet when it is used in a coffee shop, the most likely cause is that the proxy settings are incorrect or incompatible with the coffee shop's network. The employee may need to disable or change the proxy settings to connect to the Internet through the coffee shop's network. Script blocker, private browsing, and full browser cache are not likely causes of Internet connectivity issues when using a laptop in a coffee shop. Reference: CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 6: Infrastructure Concepts, page 234.
質問 # 102
ユーザーのメール サーバーからの電子メールを中継するために使用されるプロトコルは次のどれですか?
- A. IMAP
- B. SMTP
- C. POP3
- D. FTP
正解：B
解説：
SMTP stands for Simple Mail Transfer Protocol, which is used to relay email from a user's mail server to another mail server or from a mail client to a user's mail server. IMAP stands for Internet Message Access Protocol, which is used to access and manage email messages on a mail server. FTP stands for File Transfer Protocol, which is used to transfer files between computers over a network. POP3 stands for Post Office Protocol version 3, which is used to download email messages from a mail server to a mail client. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 5: Infrastructure Concepts1
質問 # 103
次のうち、プログラミングにおけるベクトルの目的を最もよく表しているのはどれですか？
- A. データのコレクションを保存する
- B. ユーザー入力のキャプチャ
- C. 数学的計算の実行
- D. 同様の操作を繰り返す
正解：A
解説：
A vector is a type of data structure that can store a collection of data of the same data type in a dynamic sequence. A vector can grow or shrink in size as data is added or removed from it. A vector would be the best option for storing a collection of data in programming because it can accommodate different amounts of data and allow fast access to any element by using its index number. Repeating a similar operation, capturing user input, and performing mathematical calculations are not purposes of a vector in programming. References:
CompTIA IT Fundamentals+ Study Guide: Exam FC0-U61, Second Edition, Chapter 4: Programming Concepts and Data Structures, page 148.
質問 # 104
技術者がシステムの完全な機能を検証しました。技術者が次に取るべきアクションは次のうちどれですか?
- A. ユーザーに質問します。
- B. 調査結果を文書化します。
- C. 情報を収集します。
- D. 何か変化があったかどうかを確認します。
正解：B
解説：
Documenting the findings is the last step in the troubleshooting process, after verifying full system functionality. Documenting the findings helps to create a record of the problem and the solution, which can be useful for future reference or training purposes. Questioning the users, determining if anything has changed, and gathering information are steps that precede verifying full system functionality in the troubleshooting process. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 2: IT Concepts and Terminology1
質問 # 105
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