ICT-App Dev Specialist FA Practice Questions - ICT-Application Development Specialist mit eidgenössischem Fachausweis Exam - ICT-App Dev Specialist FA Practice Questions - ICT-Application Development Specialist mit eidgenössischem Fachausweis Exam

Question 1

In Clean Architecture and Hexagonal Architecture (Ports and Adapters), what is the core rule regarding source code dependencies across architectural layer boundaries?

Dependencies must always point inwards toward higher-level policies and the enterprise business domain (Dependency Rule), meaning domain entities and use cases have zero dependency on UI, database, or frameworks Domain entities must directly inherit from the ORM database model classes to ensure efficient persistence Outer infrastructure adapters must be invoked directly by use cases using concrete class instantiations without interfaces Dependencies must flow outward from the domain model toward the external database and web API frameworks

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Question 2

In Domain-Driven Design (DDD), what is the primary distinction between an Entity and a Value Object?

An Entity is defined by a persistent unique identity that runs through its entire lifecycle regardless of attribute changes, whereas a Value Object is immutable and defined purely by the equality of its attributes An Entity is stored in a relational SQL database, while a Value Object is stored exclusively in a Redis cache An Entity cannot contain business logic methods, while a Value Object contains all domain services An Entity is always mutable by external consumers, while a Value Object must have public setter methods

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Question 3

In Domain-Driven Design (DDD), what is an Aggregate Root and what rule governs external object references into the aggregate?

An Aggregate Root is the master entity that encapsulates a cluster of associated objects and enforces all business invariants; external objects may only hold references to the Aggregate Root, never to internal child entities An Aggregate Root is a database stored procedure that runs hourly batch updates across all database tables An Aggregate Root is a global singleton class that manages HTTP network requests An Aggregate Root allows external classes to directly modify child entity fields without going through the root

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Question 4

When implementing distributed transactions across autonomous microservices, why is the Saga pattern preferred over two-phase commit (2PC / XA transactions)?

2PC requires synchronous locking across distributed databases, creating high latency, single points of failure, and scalability bottlenecks; Sagas use a sequence of local transactions with compensating transactions for rollbacks 2PC does not support relational databases like PostgreSQL or MySQL Sagas completely eliminate the need for error handling or compensation logic 2PC requires microservices to be written in the exact same programming language

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Question 5

What is the primary purpose of the Transactional Outbox Pattern in microservices architectures?

To guarantee atomic execution between database state mutations and publishing domain events to a message broker (e.g., Kafka/RabbitMQ) without distributed dual-write inconsistencies To compress outgoing HTTP response payloads using Brotli compression To cache user email templates in memory before sending To automatically encrypt all network traffic leaving the microservice

Correct Answer:

To guarantee atomic execution between database state mutations and publishing domain events to a message broker (e.g., Kafka/RabbitMQ) without distributed dual-write inconsistencies

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Prepare with the ICT-App Dev Specialist FA Practice Questions - ICT-Application Development Specialist mit eidgenössischem Fachausweis Exam practice quiz. This question bank includes 100 questions covering design, pattern, database, primary, and architectures. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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ICT-App Dev Specialist FA Practice Questions - ICT-Application Development Specialist mit eidgenössischem Fachausweis Exam

This practice set contains 100 questions from the matching question bank and focuses on design, pattern, database, primary, and architectures. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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ICT-App Dev Specialist FA Practice Questions - ICT-Application Development Specialist mit eidgenössischem Fachausweis Exam

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