Oracle Java EE 7 Application Developer (1Z0-900) Practice Test
The Oracle Java EE 7 Application Developer (1Z0-900) certification validates a developer's comprehensive ability to design, build, and deploy enterprise applications using the Java Platform, Enterprise Edition 7. This professional credential demonstrates mastery of core Java EE technologies including CDI for dependency injection, EJB for business logic encapsulation, JAX-RS for RESTful web services, JPA for object-relational mapping, and JSF for component-based web UIs. Achieving this certification signifies that a professional can architect robust, scalable, and maintainable solutions that adhere to Java EE standards and best practices. In today's enterprise landscape, where businesses rely on complex, distributed systems, this certification serves as a benchmark for technical proficiency and a commitment to industry-standard development methodologies. It bridges the gap between foundational Java knowledge and the specialized skills required for enterprise-grade application development, making certified individuals valuable assets in organizations building mission-critical software.
Preguntas de Muestra
Prueba algunas preguntas para ver cómo es el examen completo.
In a hospital scheduling application running on Java EE 7, the team is reviewing a Java EE 7 implementation for durable subscription. The last release passed unit tests but failed during clustered deployment. Which option best matches the Java EE 7 exam objective while avoiding the most likely design trap?
In a hospital scheduling application running on Java EE 7, the team is reviewing a Java EE 7 implementation for principal access. A compliance review requires the fix to use portable Java EE APIs. Which option best matches the Java EE 7 exam objective while avoiding the most likely design trap?
La opción correcta es: Utilizar el contexto de seguridad proporcionado por el contenedor en lugar de analizar encabezados personalizados para la identidad. Esto se ajusta al objetivo de aplicaciones Java EE 7 seguras porque utiliza la característica del contenedor destinada al acceso de principales. El distractor más plausible es el atajo donde confiar en un encabezado de usuario proporcionado por el cliente es susceptible de ser falsificado a menos que se securice por un límite de autenticación upstream; esto puede parecer resolver el síntoma inmediato, pero puede saltarse el modelo de servicio Java EE 7, debilitar la portabilidad o cambiar la semántica de ciclo de vida que el examen espera.
In a logistics company's Java EE 7 shipment platform, the team is reviewing a Java EE 7 implementation for passivation. The team must change the design without replacing the application server. Which option best matches the Java EE 7 exam objective while avoiding the most likely design trap?
In a logistics company's Java EE 7 shipment platform, the team is reviewing a Java EE 7 implementation for MTOM. The last release passed unit tests but failed during clustered deployment. Which option best matches the Java EE 7 exam objective while avoiding the most likely design trap?
In a hospital scheduling application running on Java EE 7, the team is reviewing a Java EE 7 implementation for BatchRuntime. The last release passed unit tests but failed during clustered deployment. Which option best matches the Java EE 7 exam objective while avoiding the most likely design trap?
La opción correcta es: Utilice BatchRuntime.getJobOperator para iniciar, inspeccionar, detener o reiniciar trabajos de manera programática. Esto se ajusta al objetivo de usar la API de lotes en aplicaciones Java EE 7 porque utiliza la característica del contenedor destinada a BatchRuntime. El distractor más plausible es el atajo donde se llaman directamente las clases de artefacto, lo que evita el tiempo de ejecución de lotes y el repositorio; esto puede parecer resolver el síntoma inmediato, pero evita el modelo de servicio de Java EE 7, debilita la portabilidad o cambia los semánticas de ciclo de vida que la prueba espera.