Oracle 1Z0-807 Online Practice Questions and Exam Preparation

Oracle 1Z0-807 Online Questions & Answers

• Question 71:

  Which two are significant advantages of developing web applications with JavaServer Faces (JSF)?

  A. JSF pages can be previewed outside the web container.
  B. Backing beans can be unit tested outside the web container.
  C. Client-side validation mechanisms are automatically generated.
  D. JSF pages can be integrated with AJAX.
  C. Client-side validation mechanisms are automatically generated.
  D. JSF pages can be integrated with AJAX.

• Question 72:

  Which two statements are true about transport-layer security?

  A. It applies to both a message body and its attachments.
  B. It is loosely coupled with the transport-layer protocol.
  C. It is an end-to-end security mechanism.
  D. It prevents the captured data from being replayed at a later time.
  A. It applies to both a message body and its attachments.
  D. It prevents the captured data from being replayed at a later time.

• Question 73:

  You are consulting with a team that has maintained several legacy database for years. They have reviewed the JPA spec and are wondering if the technology would offer benefits over this current SQL base. Which statement identifies a risk of adopting JPA?

  A. JPA only works with well-known data models.
  B. JPA may be able to model every table as a class.
  C. JPA could render code that requires extensive SQL tuning to perform well.
  D. JPA's query language relies on a container to manage the persistence layer.
  E. JPA doesn't provides ACID semantics.
  A. JPA only works with well-known data models.

• Question 74:

  Your company provides a marketplace for industrial chemicals. You are required to offer accurate pricing and quantities to all marketplace users.

  Marketplace users are globally distributed.

  What is the most appropriate technology to use to satisfy this requirement?

  A. Server-side distribution using JAX-WS
  B. Client-side polling using JAX-RPC
  C. Web services using REST
  D. An enterprise messaging system
  C. Web services using REST

• Question 75:

  Which two kinds of applications benefit from the adoption of service oriented architecture (SOA) inspired

  patterns and practices?

  A. An application that retains legacy systems while evolving to accommodate future business demands
  B. An application with tightly coupled services that enable messages to flow easily
  C. An application that utilizes fine-grained interfaces to provide communication to the object of a service
  D. An application in which the communication between services and the business process are platform independent.
  A. An application that retains legacy systems while evolving to accommodate future business demands
  D. An application in which the communication between services and the business process are platform independent.

• Question 76:

  Your development team wants to use Google Guice. A previous architect assigned this request a low priority, citing the complexity of integration and no compelling benefits statements from the requesting team.

  The team claims that their colleagues have achieved the integration using a pattern. This pattern reduced the level of difficulty and risk and did not require vendor support.

  Which pattern fits this description?

  A. Context Holder
  B. Service Starter
  C. Dependency Injection Extender
  D. Bean Locator
  C. Dependency Injection Extender

• Question 77:

  A company manufactures widgets for sale to distribution. Distributors call this company when they want to order more widgets. The company wants the distributors to send orders using XML documents over the Internet to reduce the number of data entry personnel needed. It has no control over the distributors technologies. The company does not want the Orders to impact the performance of other users. You have been assigned the task of designing a new API.

  Which method do you use?

  A. Design the API as a Java Message Service (JMS) queue.
  B. Design the API as an Remote Method Invocation (RMI) interface.
  C. Design the API as a synchronous web service.
  D. Design the API as an asynchronous web service.
  D. Design the API as an asynchronous web service.

• Question 78:

  Which two actions limit the consequences of a network based attack?

  A. Implementing the principle of least privilege
  B. Installing a firewall at the outer boundary of your systems
  C. Placing Internet-accessible servers in a demilitarized zone
  D. Deploying a single sign-on system to provide system-wide authorization
  E. Allowing application servers privileged access to all databases
  B. Installing a firewall at the outer boundary of your systems
  E. Allowing application servers privileged access to all databases

• Question 79:

  Which two statements are true about java Cryptography Architecture (JCA)?

  A. Any JCA provider must implement each supported category of algorithms.
  B. Exactly one Implementation of each category of cryptographic algorithms must be provided.
  C. Implementations of cryptographic algorithms can be plugged in to a JVM after it has been installed and at run time.
  D. Categories of algorithms supported by JCA include message digests, signatures encryption, management, and random number generation.
  C. Implementations of cryptographic algorithms can be plugged in to a JVM after it has been installed and at run time.
  D. Categories of algorithms supported by JCA include message digests, signatures encryption, management, and random number generation.

• Question 80:

  Your CMC wants to move several web based search applications to an AJAX model, hoping to improve user engagement with a browser experience that feels smaller and more responsive. Which identifies a drawback to consider when adopting an AJAX model to improve user experience?

  A. Maintaining current performance could require more hardware.
  B. Maintaining accessibility across clients may require more development.
  C. Maintaining security within the page could be more difficult.
  D. Maintaining page navigability for users would have to be re-evaluated.
  E. Maintaining a scalable system could require redesigning applications.
  C. Maintaining security within the page could be more difficult.