Introduction-to-IT復習過去問、Introduction-to-IT関連試験

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WGU Introduction-to-IT 認定試験の出題範囲：

トピック出題範囲
トピック 1
  • Basics of Programming Languages in Software Development: This section of the copyright assesses the skills of IT Support Specialists and covers the fundamental purpose of programming languages in software development. It provides a simple description of how programming works and how developers use languages to build tools and applications.
トピック 2
  • Data management functions in databases: This section of the copyright measures the skills of Systems Administrators and summarizes the basic functions involved in managing data within databases. It introduces how data is stored, organized, and accessed, giving learners a simple understanding of how essential database tasks support business information needs.
トピック 3
  • Introduction to IT: This section of the copyright measures the skills of IT Support Specialists and explains information technology as a discipline, along with how the IT department supports business activities. It provides a simple overview of different IT areas such as systems and services, networks and security, scripting and programming, data management, and the business side of IT. Learners see how these areas connect with each other and how they contribute to organizational operations.
トピック 4
  • Role of the IT department in IT infrastructure management, disaster recovery, and business continuity processes: This section of the copyright measures skills of Systems Administrators and explains how the IT department manages infrastructure and supports recovery processes to keep operations running during disruptions. It introduces how IT teams protect systems, restore services, and maintain continuity for the business.
トピック 5
  • Structure, function, and security associated with networks: This section of the copyright measures skills of IT Support Specialists and outlines the basic components of networks, how they operate, and the security needed to protect them. It provides a simple view of how network structures support communication and how security measures protect information.

>> Introduction-to-IT復習過去問 <<

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Introduction-to-IT試験ガイドのバージョンは、学習レベルと条件が異なるすべての学習者に適合するように継続的に改善されています。クライアントは、携帯電話、ラップトップ、タブレットコンピューターなどの電子機器で、Introduction-to-IT試験ガイドのAPP /オンラインテストエンジンを使用できます。アフターサービスは非常に配慮されており、クライアントはIntroduction-to-ITクイズ教材の価格と機能についてオンラインカスタマーサービスに相談できます。そのため、Introduction-to-IT認定ファイルは完璧に近いものであり、クライアントが使用した後の大きな驚きです。

WGU Introduction to IT 認定 Introduction-to-IT 試験問題 (Q99-Q104):

質問 # 99
A programmer needs to create a variable that holds a wire length rounded to the nearest tenth. What is the name of the data type that should be used?

正解：B

解説：
A wire length rounded to the nearest tenth requires a numeric type that can store fractional values, such as 2.3 meters or 15.7 centimeters. In programming and database systems, floating-point data types are designed to represent real numbers that include decimal portions. This makes floating point the appropriate choice for measurements, scientific values, averages, and any quantity where partial units are meaningful. Using an integer would lose the fractional component because integers store only whole numbers, which would make the rounded-to-the-tenth requirement impossible to preserve. Character and character string types store text symbols rather than numeric quantities intended for arithmetic and comparisons. In Information Technology curricula, floating-point types are often introduced alongside integers to highlight the difference between counting values and measurement values. Although some databases prefer fixed-point decimal types for financial precision, for a physical measurement like wire length, floating point is commonly accepted and matches the options provided. Therefore, the correct data type for a wire length rounded to the nearest tenth is floating point.


質問 # 100
What does a modem do?

正解：D

解説：
A modem serves as the connection between the customer network and the internet service provider. In Information Technology networking, modem stands for modulator-demodulator. Traditionally, it converts outgoing digital data from a computer or router into a form suitable for transmission over the provider's communication medium and converts incoming signals back into digital data. Depending on the service type, this may involve cable, DSL, fiber, or cellular technologies, each using specific signaling methods. The modem typically terminates the ISP line and hands off connectivity to a router or directly to a computer.
Option A describes routing or switching behavior rather than a modem function. Option B describes a server that offers hosted services. Option D describes a firewall, which protects a trusted network by filtering traffic from untrusted networks. Since the essential purpose of a modem is enabling communication between the customer premises equipment and the ISP network, the correct choice is that it serves as the connection between the customer network and the internet service provider. Therefore, the correct answer is option C.


質問 # 101
What does a router do?

正解：D

解説：
A router manages network traffic by using a routing table to determine where data packets should be sent. In Information Technology networking, a router connects different networks, such as a home local network and the internet, and forwards packets based on destination IP addresses. The routing table contains information about known networks and the best path to reach them. This allows the router to direct traffic efficiently between networks and to serve as a gateway for devices on a local area network. Option A describes a server, which provides services like hosting websites or applications. Option C describes a repeater, which boosts or regenerates signals to extend cable distance. Option D describes a modem, which modulates and demodulates signals to convert between analog and digital forms for transmission over certain media. While modern home routers may also include switch and wireless access point features, the core routing function is traffic management using routing information. Therefore, the correct answer is the option describing maintaining a table and managing traffic, which is option B.


質問 # 102
One database field needs to be restricted to only those values that are single alphanumeric symbols. Which data type should be used?

正解：D

解説：
A field restricted to single alphanumeric symbols should use the character data type because it is designed to store exactly one character. Alphanumeric symbols include letters A through Z and digits 0 through 9, and these are naturally represented as individual characters. In Information Technology and database systems, selecting a character type allows the designer to enforce a fixed length of one, which helps maintain data integrity by preventing longer entries. An integer type is used for whole numbers and would not properly handle letters, while floating point is for decimal values and is also inappropriate for single symbols. A character string type can store multiple characters, which would allow inputs longer than one symbol unless additional constraints are applied. Using the character type is therefore the most direct and standard approach for storing one letter or digit, such as a middle initial, a grade code, or a single-character category label.
Therefore, the correct data type is character.


質問 # 103
Which task is accomplished by an IT professional organization?

正解：C

解説：
Publishing professional journals is a common task accomplished by IT professional organizations. In Information Technology, organizations such as ACM and IEEE publish peer-reviewed journals, magazines, conference proceedings, and technical standards that help share research, best practices, and emerging developments. These publications support professional learning, improve the quality of practice, and help define the body of knowledge for the field. Coordinating data exchange policies between states is more likely a government or intergovernmental function. Producing government regulations is the role of regulatory agencies, not professional associations. Brokering international trade agreements is handled by governments and international trade bodies rather than IT professional organizations. Professional organizations typically provide conferences, certifications or professional development programs, codes of ethics, special interest groups, and publications. Since journals and technical publications are a standard output of professional associations, the correct answer is publishing professional journals.


質問 # 104
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IT業界の一员として、君はまだIT認証試験を悩んでいますか？認証試験はITの専門知識を主なテストとして別に初めてIT関連のWGU認証試験に参加する受験生にとってはとても難しいとみされます。良い対応性の訓練が必要で、JPNTest のIntroduction-to-IT問題集をお勧めます。

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