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?

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?

There is a desk that can hold at most four (4) files. On this desk, six (6) files A through F are used for a job. When the fifth file needs to be put on the desk, the file with the longest time since the last use among the four (4) will be put in a drawer. If the files are put on the desk and referenced in order of A, B, C, D, E, C, B, D, F, B, which of the following is the last file to be put in the drawer?

At a certain company, employees get a medical allowance equal to 5% of their monthly base salary in addition to their monthly base salary. If the total of the monthly base salary and medical allowance is more than 5,000, a 20% tax is deducted from the total. In the program below, the function calculateTotalSal receives the monthly base salary as an argument and returns the monthly total salary after tax deduction. Which of the following is the correct combination of pieces of code to be inserted into A and B in the program? Here, the monthly base salary is a multiple of 100.

Which of the following is the appropriate way for extracting data from a stack that stores multiple data?

In the program below, the function subTotal receives an integer array inputarr as an argument, returns an array arr in which the sum of all elements of original array inputarr up to that location is stored in the same location. Which of the following is the correct combination of pieces of code to be inserted into A and B in the program. Here, the size of the array inputarr is greater than 1, and elements outside the bounds of the array must not be accessed, and the array index starts at 1.

Which of the following is the explanation of a characteristic of hypertext?

Which of the following is designed to virtually reduce the time for the CPU to access the main memory, in order to improve the processing efficiency of a PC?

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?

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?

The system configurations A through C are made up by connecting multiple identical devices. Which of the following is the list where A through C are sorted in descending order of availability? Here, ─▭─ represents a device. The parallel connection requires only one (1) of the devices to be functional, while the series connection requires all devices to be functional.

When the processing speed of the system overall is constrained because of slow processing speed in one of the components, which of the following is the term for the component that is causing the problem?

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?

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.

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)?

Spreadsheet software is used to predict sales according to the weather. The probability for the weather type (sunny, cloudy, rainy) on the day to be predicted and the predicted sales amount by weather type for each product are entered into the worksheet below. An expression is entered in cell E4 to calculate the predicted sales amount on the day for Product A, and this is copied to cells E5 through E6 and used. Under these conditions, which of the following is the appropriate expression to be entered in cell E4? Here, to obtain the predicted sales amount on the day for each product, the probability for each weather type is multiplied by the predicted sales amount for each of weather type, and then these values are added up.

Which of the following is the appropriate description of multithreading?

Which of the following is the appropriate role of OCR?

Which of the following is the function that aids keyboard input and lessens the trouble of entering characters, by looking up past input history for characters being entered and displaying a list of candidate character strings?

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?

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?

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? Here, each purchase includes only one product, and can be uniquely identified by Purchase_number. Also, each product can be 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 file storage on the Internet that can be freely written to and read from over the Internet and can be used for saving files in place of USB memory or other such media?

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

Which of the following mobile communication systems not only offers higher communication speed than LTE, but also allows more devices to connect and has less lag time?

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?

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?

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?

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?

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?

When the system development activities are carried out, a plan is set up to complete the activities in 20 days by six (6) members having the same productivity. However, the plan is changed to have the activities finished in 15 days, and new members are added. When the productivity of the new members is half of the initially planned members, what is the minimum number of new members necessary for finishing the activities in 15 days?

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 hierarchical decomposition for the activities of creating project deliverables?

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

The PC on one’s desk and the printer in a shared space are started by a single person under the conditions shown in the figure below. Each operation/processing needs to be performed sequentially, but during automatic processing of one device, it is possible for the person to move or operate the other device in parallel. What is the minimum time required (in seconds) for the person to start the PC startup at his/her desk, then move, start and end the printer startup, return to his/her desk, and end the PC startup?

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?

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?

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?

The entire inventory of Warehouse A and Warehouse B is to be sent to Store C and Store D. The number of items in the inventory of Warehouse A and Warehouse B is 35 and 15 respectively, and the required number of items for Store C and Store D is 20 and 30 respectively. The shipment cost for each item from warehouse to store is as shown in the table. Under these conditions, what is the minimum total shipment cost in dollars?

Which of the following is the appropriate term that refers to a variety of individuals with different sex, age, nationality, experience, etc.?

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?

The sales and the costs for a certain product for this month are as shown in the table below. When the unit sales price is changed from 1,000 yen to 800 yen, in order to avoid making a loss, at least how many units need to be sold each month? Here, the fixed cost and the variable cost per unit of the product do not change.

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 free software that can be copied or modified freely without permission from the author?

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?

Which of the following is the international standardization organization that engages in standardization of information security management systems and quality management systems?

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?

The elements seen from the seller’s standpoint in the marketing mix are called “the 4Ps.” Which of the following are the corresponding elements as seen from the buyer’s standpoint?

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?

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 terminologies refers to an initiative to develop unprecedented and innovative services by utilizing IT in the field of finance, such as a service provided by a bank where AI manages depositors’ assets automatically?

Which of the following is one of the technologies used in deep learning, and represents a mathematical model of the circuits in the human brain?

Which of the following is the production system that minimizes the inventory between processes through the procurement of raw materials and components at the required timing and in the required quantity?

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.

Which of the following is the general name of software that has various functions such as communication via e-mail and chat, information sharing, and video conferencing?

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?

Which of the following is the appropriate term that represents a method for achieving automation and improved efficiency by replacing humans with a software robot to perform routine office work?

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

The table below shows the evaluated scores of the proposals of four (4) vendors from the viewpoints of management, technology, and price. When each score of the management viewpoint, technology viewpoint, and price viewpoint is weighted, and the vendor with the highest total score is selected as the supplier, which of the following vendors is selected?

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?

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?