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Which of the following is always true for two (2) sets A and B? Here, (X ∩ Y) represents the set that contains only the elements that are in both X and Y (intersection set), and (X ∪ Y) represents the set that contains all of the elements that are in at least one of X or Y (union set).

Which of the following is the binary number that is obtained by adding the binary numbers 01011010 and 01101011? Here, the binary numbers are expressed as positive 8-bit values.

Which of the following is the combination of the mean and median of the data? [Data] 10, 20, 20, 20, 40, 50, 100, 440, 2000

Which of the following is the appropriate description concerning the prefix of the International System of Units (SI) that is used to indicate CPU clock frequency, communication speed, and other such things?

Which of the following is the most appropriate description concerning a compatible CPU?

In the description below concerning the connection between a PC and a peripheral device, which of the following is the appropriate combination of words to be inserted into blanks A and B? The connection of a new peripheral device to a PC requires (a) [A], but if a peripheral device that supports [B] function is connected, the [A] is installed automatically and the device can be used.

There is an IoT system that automatically opens and closes the water gate for a rice field by measuring the water level in the rice field. Which of the following is the appropriate combination of terms to be inserted into blanks A and B in the figure?

Among the descriptions A through C below concerning the effects that are obtained by simultaneously running multiple virtual servers on one (1) physical computer, which of the following lists all and only the appropriate descriptions? A: Each virtual server can run an OS with a different version, and the resources of the physical computer can be utilized effectively. B: The throughput that is gained when the number of virtual servers is increased is the same as when the number of physical computers is increased by the same number. C: A volume of data that is the same as the capacity of the HDD on the physical computer can be simultaneously recorded on all of the virtual servers.

Which of the following is the appropriate explanation of a deadlock?

In a web server, five (5) directories have a hierarchical structure as shown in the figure below. In an HTML document stored in directory B, which of the following references the file img.jpg stored in the directory E? Here, directories and files are referenced using the method described below. [Method of referencing directories and files] (1) A file is referenced as "directory name/ ... /directory name/file name", where the directory names on the path are listed and separated with "/" in sequence, followed by the file name. (2) The current directory is represented by "." (a period). (3) The directory one level above is represented by ".." (two (2) periods). (4) When a reference begins with a "/", it is assumed that the root directory has been omitted from the beginning of the reference. (5) When a reference does not start with "/", "." (a period), or ".." (two (2) periods), it is assumed that "./" for the current directory has been omitted from the beginning of the reference.

There is a system where a full backup is made after closing time every Sunday, and an incremental backup is made after closing time on Monday through Saturday. On a Wednesday, a failure happened during business hours, so a decision was made to restore data to the state at the closing time on Tuesday by using backup files. Which of the following lists all and only the necessary backup files for restoring data? Here, an incremental backup file means a backup file that contains only the data that has been modified since the previous backup (a full backup or an incremental backup) was made.

Which of the following is the appropriate description concerning Open Source Software (OSS)?

Which of the following is the appropriate description of multithreading?

When the process for a smart speaker to provide a voice response to the content of a user speaking to a smart speaker is as in (1) through (4), which of the following is the process that corresponds to voice recognition? (1) The voice of the user is transformed into text data. (2) Text data is analyzed, and the meaning is understood. (3) The content of the response is decided, and text data is created. (4) The created text data is read out.

When an activity for building a relational database is divided into steps A through C below, which of the following is the appropriate order of the steps? A Identifying the data items to be used in the business operation B Creating tables C Inserting records

The "Purchase_list" table in a relational database manages the purchases of products. This table should be normalized and divided into a "Purchase" table and a "Product" table. Which of the following is the most appropriate field that should be contained in common in the two divided tables? [Purchase_list table] Purchase_number | Product_number | Product_name | Count | Unit_price | Payment_method | Delivery_date Note: Each purchase includes only one product, identified by Purchase_number. Each product is uniquely identified by Product_number.

Which of the following is the appropriate description of a rollback in transaction processing?

Which of the following is the appropriate purpose of exclusive control in a database management system?

Which of the following is the appropriate explanation of the POP communications protocol?

Which of the following is the appropriate description of a SIM card?

Which of the following is the most appropriate description of edge computing in an IoT system?

Which of the following is the appropriate description concerning virus infection?

Which of the following is the appropriate combination of the descriptions (i) through (iii) about threats in information security and the terms below? (i) An attack in which a malicious script injected to a web site that displays data that a visitor enters as it is, is executed on the visitor's web browser, and data such as cookies are stolen by a third party (ii) A program that infects numerous PCs, executes malicious operations on the PCs by following instructions received via a network, and conducts a coordinated attack (iii) A program that is disguised as a useful program, but once installed and executed, performs unauthorized data destruction or leakage

A document file that is stored on a file server is directly edited on a PC and then an attempt is made to overwrite the file, but the message "You do not have permission, so the file cannot be saved" is displayed. Which of the following is the appropriate combination of permissions that were set for the document file and the folder that it is stored in? [Table] File read | File write | Folder read a) Yes | Yes | No b) Yes | No | Yes c) No | Yes | No d) No | No | Yes

When a digital signature is attached to an e-mail and the e-mail is sent, in comparison to the use of a digital certificate that is issued by a trusted certificate authority, which of the following is the risk on the receiver's side that is caused by the use of a digital certificate created by the sender themselves?

In risk management for information security, the categories that include risk transfer, risk avoidance, risk mitigation, and risk retention are sometimes used. Which of the following is the appropriate description concerning these?

In a wireless LAN router, which of the following is the appropriate explanation of a function that is set up for devices brought in from external locations and is called a "guest port" or a "guest SSID" or other such names?

Which of the following is the appropriate combination of damage by incidents (i) through (iii), and confidentiality, integrity, and availability in information security? (i) A website is taken down by a DDoS attack. (ii) Inaccurate data is entered because of a typing mistake on a keyboard. (iii) Personal information is leaked because a PC is infected with malware. [Table] (i) (ii) (iii) a) Availability Integrity Confidentiality b) Availability Confidentiality Integrity c) Integrity Availability Confidentiality d) Integrity Confidentiality Availability

A business PC that was connected to a company's internal wireless LAN network was used to view a website on the Internet. Immediately after this, the web browser crashed and unknown files were created, and other such events occurred that indicated the possibility of infection with malware. Which of the following is the appropriate action that the user of this PC should take first?

Which of the following is the appropriate combination of terms or phrases inserted into A through D in the table that describes the characteristics of encryption methods? [Table] Encryption method | Key characteristics | Safe distribution | Speed [A] | Encryption key and decryption key are different | Easy | [C] [B] | Encryption key and decryption key are same | Difficult | [D] A B C D a) Common key crypto. Public key crypto. Slow Fast b) Common key crypto. Public key crypto. Fast Slow c) Public key crypto. Common key crypto. Slow Fast d) Public key crypto. Common key crypto. Fast Slow

Which of the following is the appropriate example of activities performed in C (Check) in the organizations that operate ISMS on the basis of the PDCA model?

Which of the following is the most appropriate description of ransomware?

In the process of system requirements definition, which of the following is the appropriate evaluation criteria for system requirements?

Estimation methods for system development include the analogous method, the bottom-up method, and the FP (Function Point) method. Which of the following is the appropriate explanation of the FP method?

Which of the following is the activity in software maintenance?

Which of the following is the appropriate description concerning the black box test?

Which of the following is the most appropriate description concerning DevOps in software development?

In a system development project, a flowchart of the development process is created to perform quality management. Which of the following is the appropriate purpose of using such a flowchart?

Which of the following is appropriate to be prepared in order to select the delivering party for a product or service?

Which of the following is the most appropriate description of stakeholders in a system development project?

Which of the following is the appropriate explanation concerning the approach for project management?

Which of the following is the appropriate management system that improves the efficiency of IT operations and enhances the service quality including availability?

Which of the following is the appropriate activity for planning and implementing the points described below in order to maintain the project room and equipment used for system development? A chamber to ensure confidentiality of test data is set up within a project room, and the entrance and exit are controlled. The server that is set up for testing is connected to an uninterruptible power supply in order to prevent data loss due to a power outage.

Which of the following is the purpose of incident management?

Which of the following is the most appropriate department for setting up a service desk that is a single point of contact for queries on the usage method of the internal system?

Which of the following is the appropriate description concerning SLM in an IT service?

Which of the following is the appropriate explanation of a system audit?

Regarding the roles (i) through (iv) below for establishing appropriate IT governance, which of the following is the appropriate combination of the roles of the company executive responsible for it and the person responsible for the information system department? (i) Defining the IT governance policy (ii) Formulating principles for decisions on investment in computerization (iii) Deciding the roles and the rights within the information system department (iv) Performing progress management in system development on the basis of a project plan Company executive IS department head a) (i), (ii) (iii), (iv) b) (i), (iii) (ii), (iv) c) (ii), (iii) (i), (iv) d) (ii), (iv) (i), (iii)

Which of the following is the initiative that is composed of control environment, risk assessment, control activities, information and communication, and monitoring activities, and has compliance with laws and regulations relating to the business activities as one of its objectives?

In order to manufacture one (1) unit of a product, 10 kg of the raw material A and 5 kg of the raw material B are needed. If the amount of raw material that can be used in one (1) month is 60 kg of raw material A and 40 kg of raw material B, what is the maximum number of units of the product that can be manufactured in one (1) month?

Among company rules, which of the following is the rule that describes segregation of duties?

At company X, the possibility of a launch being delayed for a new product Y under development and its impact on future performance were analyzed and evaluated. Which of the following corresponds to this initiative?

Which of the following is the expression that calculates operating profit?

Which of the following is the right that belongs to a purchaser of a PC software package provided by means of CD-ROM?

Which of the following is the case example where Bluetooth is used as a standard protocol of wireless communications for cellular phones, household electric appliances, or such other devices?

Which of the following is appropriate as a characteristic of the QR code?

Among the lists of corporate activities A through D, which of the following is the list that contains all activities concerning the establishment of compliance? A: Supporting fine art and cultural activities B: Training employees in the codes of conduct C: Performing activities for prevention of global desertification D: Creating a mechanism for whistle blowing

Which of the following is the appropriate example of vertical integration in corporate business development?

Which of the following is the appropriate combination of the management themes and techniques for achieving them? [Management themes] A: A company wants to develop efficient business processes that span from procurement of components to sales. B: A company wants to understand customers' preferences and other information, and use them in product planning and sales promotion. C: A company wants to know the product name, quantity, and other sales-related information at the time of sale in order to restock appropriately and analyze strong-selling products. [Techniques] CRM, POS, SCM A B C a) SCM CRM POS b) POS CRM SCM c) CRM SCM POS d) SCM POS CRM

As a method for a company to utilize the business resources of another company, there is a corporate acquisition and a corporate alliance. Which of the following lists all and only the general disadvantages of a corporate alliance in comparison with a corporate acquisition? I It is required to reform the other company's organization or business process. II The participation in decision making of the other company regarding the utilization of business resources is limited. III The required investment is large and has an impact on the financial status.

A middle-sized consumer electronics manufacturer company A divides the products into groups in accordance with their potential and competitive strength in order to determine the priority of investing funds among their lineup. Which of the following is the most appropriate method of analysis for this purpose?

Which of the following is the appropriate means of complementing the technologies and know-how of one's company with those of other companies in a short period of time?

Which of the following is the most appropriate description of the API economy?

Which of the following is the appropriate explanation of an ERP package?

When build-to-order production is compared to build-to-stock production, which of the following is the appropriate characteristic of build-to-order production?

Which of the following is the appropriate example of a function that uses an IC tag?

Which of the following is the most appropriate diagram representing the flow of business operations after concurrent engineering is applied? Here, the arrows in the diagram show the flow of business operations, and each activity name is displayed on top. a) All four stages (Specifications → Production diagram → Process diagram → Production) proceed strictly sequentially, one finishing before the next starts. b) Specifications and Production diagram proceed sequentially; Process diagram and Production start with partial overlap of the previous stage. c) All stages run within one large feedback loop, with Production feeding back to Specifications. d) Each stage starts before the previous one finishes — Specifications starts first, then Production diagram begins while Specifications continues, then Process diagram begins while Production diagram continues, then Production begins while Process diagram continues (staggered overlapping start).

Which of the following is the term for a method that uses data such as accumulated sales data to find regularity such as a correlation between weather and products that sell well?

In the upstream processes of system development, which of the following is the most appropriate objective of performing business process modelling?

When the system life cycle is divided into the planning process, requirements definition process, development process, and operation/maintenance process, which of the following is the appropriate process to clarify the functions of the system for the implementation of business operations?

Which of the following is the appropriate combination of words or phrases to be inserted into blanks A and B in the description below concerning documentation that is created in the procurement of an information system? The document that sets out the overview, what is being asked for, procurement conditions, and other such information for an information system to be procured and asks for a proposal to be submitted is the [A]. And the document that asks for the provision of relevant information by indicating the computerization purpose, a business overview, and other such information is the [B]. A B a) RFI RFP b) RFI SLA c) RFP RFI d) RFP SLA

In an online service, a website with a newly created design and a website with a conventional design were run in parallel experimentally to compare them and find out the one that makes its users more likely to apply for paid services. Which of the following is the most appropriate technique used at this time?