Oracle Oracle Certifications 1Z0-807 Questions & Answers

• Question 71:

  What are two consequences of using the Composite View pattern?

  A. Improves performance

  B. Avoids duplicate content

  C. Forces a whole-part dependency

  D. Allows tables to be reused in multiple locations

  E. Restricts all sub views to have a consistent view technology

  Correct Answer: BD

• Question 72:

  Which option describes the design relationship between session beans and entity beans?

  A. Aggregation

  B. Separation of concerns

  C. Common reuse principle

  D. Liskov substitution principle

  E. Interface segregation principle

  Correct Answer: B

• Question 73:

  Which three web applications work best when they are designed to be server-push enabled?

  A. A news feed used for providing users with frequently updated news content

  B. A web chat that allows users to communicate using easily accessible web interfaces

  C. A live sporting event application, used to deliver current results during matches

  D. An auction system that provides users with live online bidding

  E. A graphics rendering application that generates visuals in an orderly fashion

  Correct Answer: BCD

• Question 74:

  You are using an open source integration framework in your project. However, key interfaces do not explicitly define several strange conditions you have repeatedly seen while testing.

  Which option is the name given to the anti pattern described above?

  A. Composite View

  B. Leaky Abstraction

  C. Asynchronous Interaction

  D. Golden Hammer

  Correct Answer: B

• Question 75:

  Which two statements are true about security strategies at the message level?

  A. Messages are secured during transport and after arrival at their destination 100% Real QandAs | 100% Real Pass

  B. Each portion of a compound message is secured.

  C. SSL is required to ensure authenticity, integrity, and confidentiality.

  D. Message attachments are secured without the need for a dedicated API.

  E. Security is dependent on the application environment or the transport protocol.

  Correct Answer: AD

• Question 76:

  Which two features are supported by the Java Authentication and Authorization Service (JAAS) API?

  A. Single sign on

  B. Secure network connections

  C. Configurable access control policies

  D. Web services security

  E. Message encryption and key generation

  Correct Answer: AC

• Question 77:

  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

  Correct Answer: C

• Question 78:

  Which statements are true about Java integration technologies?

  A. Remote Method Invocation (RMI) helps to connect subsystems in a loosely coupled manner.

  B. Java Message Service (JMS) helps in synchronous messaging between Java and non-Java systems.

  C. JMS helps to broadcast messages to multiple Java-based receivers.

  D. Java Connector Architecture (JCA) helps to integrate with heterogeneous legacy enterprise information systems.

  Correct Answer: C

• Question 79:

  A travel company re-architects its application from a two-tier to a three-tier architecture. To see what impact the new architecture has on its non-functional requirements (NFR), the company intends to build a prototype based on the new architecture.

  The company compares the NFR metrics associated with the new prototype against the metrics from their original two-tier solution.

  Which option is an advantage of the original two-tier solution?

  A. It has better availability because it has fewer single points of failure.

  B. It has better manageability because each client has its own copy of the application. 100% Real QandAs | 100% Real Pass

  C. It has better performance because each client must use its own set of domain objects.

  D. It has better scalability because each client can access the database independently of other clients.

  Correct Answer: A

• Question 80:

  MedLabML is a startup firm that moves patient data between different care providers to provide a "single patient view". They use a B2B system to exchange electronic business document with their key suppliers. They are seeking your advice about standards to review for improving their message-level security.

  Which standard or API would you recommend they read?

  A. SAML 1.1

  B. Web Service Interoperability Technology

  C. XML Signature

  D. SSL

  Correct Answer: B