ITPEC FE System Development Technology Questions with Answers

System Development Technology

72 questions · Fundamental Engineering · 1–50

Apr 2026 · Question 35

Among UML 2.x diagrams (including 2.0 and later versions), which of the following is the most appropriate diagram for providing a graphic overview of the actors involved in a system, the different functions those actors need to perform and how these different functions interact?

a)Activity diagramb)Communication diagramc)Interaction overview diagramd)Use case diagram

Apr 2026 · Question 36

Which of the following is a structural design pattern that allows classes with incompatible interfaces to work together?

a)Adapterb)Factoryc)Iteratord)Singleton

Apr 2026 · Question 37

Which of the following is an appropriate explanation of encapsulation in object orientation?

a)Abstraction and grouping of several objects that have common propertiesb)Bundling of data and procedures operating on the data as a single object and concealing their implementation inside the objectc)Creation of a base class by extracting the properties that are common among classesd)Inheritance of the properties of a base class by a subclass

Apr 2026 · Question 38

Which of the following is an appropriate category of system maintenance performed for the purpose of modifying the system to cope with changes in the software environment (e.g. DBMS, Operating system)?

a)Adaptive maintenanceb)Corrective maintenancec)Perfective maintenanced)Preventive maintenance

Oct 2025 · Question 7

In object-oriented programming, which of the following is the concept that refers to a class that defines a method with the same name and type signature as a method in its superclass?

a)Hidingb)Inheritancec)Overloadingd)Overriding

Oct 2025 · Question 34

Which of the following is an appropriate description of a UML use case diagram?

a)It shows the behavior during the object’s life cycle using finite state transitions.b)It shows the exchange of messages among objects and objects’ lifelines in a time series.c)It shows the flow from one activity to another activity in a system or business process.d)It shows the scenarios for how actors, i.e., external users or machines, interact with a system.

Oct 2025 · Question 35

In the development process, which of the following is an activity that should be performed in software architecture design?

a)Analyzing the requirements in incremental steps by arranging them in the form of a chartb)Describing the specifications so that the program is clarified on a line-by-line basisc)Obtaining the opinion of the customer and deciding on the specificationsd)Transforming the requirements for the software items into a design that describes its top-level structure and identifies the software components

Oct 2025 · Question 36

Which of the following is an appropriate description concerning a state transition test in a system integration test?

a)A method for black box tests that does not focus on a system’s internal state.b)A method that checks whether a system behaves according to the designed combinations of events and internal states.c)A method that is suitable for tests of calculations and processing systems whose internal state does not change depending on the occurrence of an event.d)A method that uses a data flow diagram and a decision table to analyze the internal state of a system.

Oct 2025 · Question 37

Which of the following is an appropriate description of an acceptance test?

a)It is conducted by developers to verify response time and other performance items.b)It is conducted by testers to ensure that the interfaces and linkages between different software parts work properly.c)It is conducted by the project manager to verify whether users’ functional requirements are met or not.d)It is conducted by users to confirm that the software is complete and meets the business needs that prompted the software to be developed.

Oct 2025 · Question 38

What is the expected value in dollars for the correction cost of an application program in the first year under the conditions shown below?

[Conditions]

(1)Program size: 2,000 k steps(2)Potential defective rate of program: 0.04 defects / k steps(3)Annual discovery rate of potential defects: 20% / year(4)Classification of discovered defects: –Major impact: 20% –Minor impact: 80%(5)Correction cost per defect Defects with major impact: 20,000 dollars Defects with minor impact: 5,000 dollars(6)In the first year, only defects with major impact are corrected

a)64,000b)128,000c)160,000d)640,000

Oct 2025 · Question 48

In a business scenario where marketing managers analyze customer interests and sales patterns, design promotional campaigns, and then send targeted emails to customers, which of the following is a modeling technique used to represent how information flows between internal processes, data stores, and external entities?

a)Class Diagramb)Data Flow Diagram (DFD)c)Entity-Relationship Diagram (ERD)d)Use Case Diagram

Apr 2025 · Question 34

Which of the following is the software architecture that decomposes applications into small, loosely coupled services that communicate over APIs?

a)Event-Driven Architectureb)Microservices Architecturec)Serverless Architectured)Service-Oriented Architecture (SOA)

Apr 2025 · Question 35

Which of the following is the UML class diagram that shows a generalization relation?

a)b)c)d)

Apr 2025 · Question 36

Which of the following is an explanation of a software testing tool corresponding to a static analysis tool that supports static testing?

a)Data concerning the operating characteristics during program execution, such as the module calling frequency and execution time, or the execution frequency of executable statement is measured.b)The instruction coverage rate and the branch coverage rate are automatically measured and analyzed on the basis of the test execution results.c)The source code is analyzed to find out if grammatical errors or logical errors exist in a program.d)The test data of the specified conditions and the program input files are generated automatically.

Apr 2025 · Question 37

Test cases for the part of a program shown in the flowchart below are created to achieve decision condition coverage (branch coverage). In order to make the test cases achieve multiple-condition coverage, which of the following is the appropriate set of test cases to be added? Here, the part enclosed by parentheses () represents a test case.

•Test cases to achieve decision condition coverage (branch coverage) (A = 4, B = 1), (A = 5, B = 0)

a)(A = 3, B = 0), (A = 7, B = 2)b)(A = 3, B = 2), (A = 8, B = 0)c)(A = 4, B = 0), (A = 8, B = 0)d)(A = 7, B = 0), (A = 8, B = 2)

Apr 2025 · Question 38

Which of the following is an appropriate test to ensure that the interfaces and linkages between different parts of software work properly?

a)Functional testb)Integration testc)Performance testd)Unit test

Oct 2024 · Question 34

Which of the following is the UML behavioral diagram showing the behavior of a single object-in response to triggers?

a)Activity diagramb)Sequence diagramc)State machine diagramd)Use case diagram

Oct 2024 · Question 35

In object-oriented programming, which of the following is abstraction?

a)Concealing implementation details and exposing only a simplified interface for interacting with objectsb)Creating a subclass instance inheriting attributes and behaviors from its superclassc)Defining multiple methods with the same name but different parametersd)Redefining in the child class a method that is already provided by the superclass with the same name and parameters but a different implementation

Oct 2024 · Question 36

Which of the following is an appropriate description of “delegation” in object orientation?

a)A mechanism that creates one (1) new object using multiple objects as its partsb)A mechanism where a lower-level class inherits the attribute or operation of a higher-level classc)A mechanism where an application of an operation to a certain object automatically causes the application of that operation to related objectsd)A mechanism where an operation to a certain object is internally requested to be performed by another object

Oct 2024 · Question 37

In unit testing, which of the following activities is part of white box testing?

a)Boundary value analysisb)Condition testingc)Equivalence partitioningd)Orthogonal array testing

Oct 2024 · Question 38

Which of the following is the appropriate explanation of a stub or a driver used in a test?

a)A driver is a module that is called from the module to be testedb)A driver passes arguments and calls the module to be testedc)A stub is a module used to call the module to be testedd)A stub is used to display or print the values returned from the module to be tested

Apr 2024 · Question 34

Which of the following are components of a UML2.x (including 2.0 and later versions) state diagram?

a)Message and Activityb)Message and Transitionc)State and Messaged)State and Transition

Apr 2024 · Question 35

Which of the following represents the appropriate combination of a class and an object in Object Oriented Programming?

ClassObject

a)A class can be defined as a group of objects with similar behavior and attributes.An object is an instance of a class.b)A class can be defined as a group of objects with similar behavior and attributes.An object is the blueprint of the class.c)A class is an instance of objects.An object can be defined as a template that describes the behavior that the class of its type supports.d)A class stores the actual values of its attributes.An object has the definition and behavior of a class.

Apr 2024 · Question 36

Which of the following is the most appropriate description of polymorphism in object-oriented design?

a)It allows developers to define classes incrementally by reusing classes defined previously as the basis for new classes.b)It allows the analyst to focus on the important dimensions while ignoring nonessential dimensions.c)It combines processes and data into a single object.d)It is the provision of a single interface to entities of different types.

Apr 2024 · Question 37

There is a program module that is executed only when the integer value of integer x is 25 ≤ x < 50. When testing this module using boundary value analysis, which of the following is an appropriate combination of values to be tested?

a)24, 25, 49, 50b)24, 25, 50, 51c)25, 26, 49, 50d)25, 26, 50, 51

Apr 2024 · Question 40

Which of the following is the appropriate order of the six phases in the SDLC (Software Development Life Cycle) model?

a)Requirements Analysis → Design → Programming → Deployment → Testing → Maintenanceb)Requirements Analysis → Design → Programming → Testing → Deployment → Maintenancec)Requirements Analysis → Design → Programming → Testing → Maintenance → Deploymentd)Requirements Analysis → Programming → Testing → Design → Maintenance → Deployment

Oct 2023 · Question 45

Which of the following is a description concerning a decision table that is one of the design techniques used in system development?

a)It represents a combination of conditions and the corresponding operations.b)It represents entities by rectangles and their relationship through connecting lines.c)It represents the flow of controls, such as a process or selection, by straight lines or arrows.d)It represents the flow of data between an external interface, processes, and data store.

Oct 2023 · Question 46

The integration test for software composed of modules arranged in a hierarchical structure is performed from a high-level module. In such a case, which of the following is a test module that is used as a substitute for a low-level module?

a)Driverb)Emulatorc)Simulatord)Stub

Oct 2023 · Question 47

Which of the following is the most appropriate feature of polymorphism in object-oriented programming?

a)Developers are allowed to define classes incrementally by reusing classes defined previously as the basis for new classes.b)Only the information required to use a software module is published to the module user.c)The processes and data are combined into a single object.d)The same message can be interpreted differently by different classes of objects.

Oct 2023 · Question 48

Which of the following is approved by the customer when the external design of a system is completed?

a)Physical database specificationb)Program flowchartc)Screen layoutd)System development plan

Oct 2023 · Question 52

In order to determine the quality condition in a test process, it is necessary to analyze and evaluate the relationship between the number of completed test items and the cumulative number of bugs. Which of the following is a graph that indicates that the quality is becoming stable?

a)b)c)d)

Oct 2023 · Question 56

Which of the following is the most appropriate characteristic of the “big bang” or all-at-once migration method that is one of the system migration methods?

a)Additional operational costs are incurred because of parallel operations.b)An additional application is required for connecting the old and new systems.c)The old and new systems operate in parallel, and migration to the new system is performed at a particular point of time.d)The problems that occur during migration to the new system have a big impact.

Apr 2023 · Question 46

The diagram below is an example of a DFD that is used in the structured analysis method. Which of the following is represented by a “◯” in the diagram below?

a)Activityb)Data flowc)Data stored)Process

Apr 2023 · Question 47

Among the definitions of software quality characteristics, which of the following characteristics refers to the ease of modifying a program for a certain computer so that it can run on a different architecture?

a)Changeabilityb)Interoperabilityc)Portabilityd)Usability

Apr 2023 · Question 48

In the error embedding method, when the number of embedded errors is S, the number of discovered errors from the embedded errors is m, the number of latent errors before the start of testing not including embedded errors is T, and the total number of discovered errors is n, which of the following expresses the relationship of S, T, m, and n?

a)mS = n−mTb)mS = Tn−mc)mS = nTd)mS = Tn

Apr 2023 · Question 49

Which of the following is an appropriate test case when a test is to be performed with decision condition coverage (branch coverage) on the section of a program shown in the figure below?

a)FalseTrueb)FalseTrueTrueFalsec)FalseTrueFalseTrued)FalseTrueTrueTrueFalseTrue

Apr 2023 · Question 62

Which of the following is a system where the use of a state transition diagram is appropriate when the system is designed?

a)Electricity charge calculation system that calculates charges based on the amount of power usage from power meter readings.b)Greenhouse control system that keeps the environment in a greenhouse optimal based on the data of an installed sensor.c)Inventory control system that performs the collection and aggregation of inventory assets at the end of every month and at the time of settlement.d)System that measures the operational status of the system resources and creates a report.

Oct 2022 · Question 46

In UML 2.0, which of the following is a diagram that represents the interactions between objects in time series?

a)Activity diagramb)Component diagramc)Sequence diagramd)State transition diagram

Oct 2022 · Question 48

Which of the following is the most appropriate description of a stack trace that is used for debugging a program?

a)A trace of call stack methods/functions/subroutinesb)Stacking/gathering the traces left by other programsc)The traces left in memory from a stack data structured)Tracing stack data structure that is used in the program

Apr 2022 · Question 48

Which of the following is a technique that embeds logical expressions that hold true for the relations or conditions between variables at specific points in the execution of a program and verifies the validity of the program?

a)Assertion checkb)Code tracec)Snapshot dumpd)Test coverage analysis

Apr 2022 · Question 49

Which of the following is an appropriate test type that is conducted to ensure that the interfaces and linkages between different software parts work properly?

a)Acceptance testb)Functional testc)Integration testd)Performance test

Apr 2021 · Question 46

The figure below shows an example of a DFD that uses one of the DFD notations and represents a flow of data in a system. Texts in the figure are not shown. Which of the following is represented by the circle “◯” in the DFD notation used in the example?

a)Activityb)Data flowc)Data stored)Process

Apr 2021 · Question 47

Which of the following is an appropriate relationship between classes and instances in object orientation?

a)An instance defines the specifications of a class.b)An instance is created based on the definition of a class.c)Multiple classes correspond to a single instance.d)Only one (1) instance exists for a single class.

Apr 2021 · Question 48

Which of the following is the weakest module coupling?

a)To implement as many functions as possible with a single moduleb)To pass arguments that control another module’s logic when the module is calledc)To pass only required data items as arguments between two (2) modulesd)To use a global area to share data items with other modules

Apr 2021 · Question 49

Which of the following tests verifies the interfaces between two (2) modules or subsystems?

a)Acceptance testb)Integration testc)Operational testd)Unit test

Apr 2021 · Question 56

Which of the following is the main purpose of a migration test for a system?

a)To confirm that a new system possesses all of the required functionsb)To confirm that sufficient performance can be derived from the new system using a copy of the actual data from the existing systemc)To confirm the compatibility of the interface between a program of another existing system and a newly developed programd)To confirm the switch procedure from the existing system to the new system and the problems that the switch can cause from the perspective of reliability and efficiency

Oct 2021 · Question 45

Which of the following UML diagrams is used to represent the user interactions with the system and the functions of the system?

a)Activity diagramb)Class diagramc)Sequence diagramd)Use case diagram

Oct 2021 · Question 48

Which of the following is an appropriate description concerning test data for black box testing?

a)Test data is created based on branch coverage.b)Test data is created based on condition coverage.c)Test data is created based on external specifications.d)Test data is created based on program structures.

Oct 2021 · Question 56

Which of the following is the appropriate description for a system migration plan?

a)A system migration plan must describe the decision criteria for restoring the old system in case the migration fails.b)Operating the new system and the old system in parallel reduces the cost of migration.c)Sharing a part of the environment between the new system and the old system makes it easier to verify the migration status.d)The greater the amount of data to be migrated, the more appropriate it would be to migrate the data in a single batch immediately before the system is switched.

Apr 2020 · Question 8

In object-oriented programming, which of the following is an explanation of overriding that achieves polymorphism?

a)A feature that allows a class to provide a specific implementation of a method that is already provided by one of its superclassesb)Creating a class through abstraction by collecting common properties of multiple classesc)Defining multiple methods in a class that have the same name but differ either in the number of arguments, argument types, or argument orderd)Hiding the internal contracts and structures of an object from its external specification