Oracle Oracle Certifications 1Z0-807 Questions & Answers

• Question 31:

  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. 100% Real QandAs | 100% Real Pass

  Correct Answer: AD

• Question 32:

  Your company has been using the ACME database vendor for many years. Recently, it started considering a migration to the XYZ database vendor, who uses different SQL dialed. The SQL engines in ACME and XYZ have significant differences in performance when executing the same SQL queries?

  Which is the best persistence technology for database migration?

  A. JPA

  B. JDBC

  C. CMP entity bean

  D. JDBC row set XML serialization

  Correct Answer: A

• Question 33:

  Upper management has announced a change in a company's primary hardware supplier for the next year, the timing of this change coincides with key purchases that line of business department has to make in support of its Java EE application upgrade/redesign project.

  You are asked to help outline a strategy to preserve the project timeline and keep hardware training costs contained.

  Which recommendation will you make?

  A. Add new hardware to create a heterogeneous environment.

  B. Request another year of sales and support with the existing vendor.

  C. Request more time to consider the total cost of change to your project and to modify your budget.

  D. Use new hardware on the web tier and redeploy existing hardware to the other tiers.

  Correct Answer: A

• Question 34:

  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.

  Correct Answer: CD

• Question 35:

  You are the architect for XYZ bank. XYZ is redesigning their online banking offering and you need to ensure that the new design follows security best practices for the JEE platform.

  Select three security best practices for JEE applications.

  A. Schedule regular penetration testing.

  B. Log all security related application events.

  C. Implement an exception-handling strategy.

  D. Encrypt data, both on the wire and at rest.

  E. Use both programmatic and declarative security.

  F. Treat users as untrusted even when authenticated. 100% Real QandAs | 100% Real Pass

  Correct Answer: BCE

• Question 36:

  Oasis Corporation has decided to develop a single Instance multi-tiered application with its existing EIS resources. You are the technical lead for the Integration team responsible for providing the following: A common Interface that can easily access the heterogeneous EIS resources

  Generic transaction mechanism support for EIS resource managers

  A connection pool to legacy EIS resources

  Which two technologies would you use to meet these requirements?

  A. JMS

  B. JDBC

  C. JCA

  D. JAX-WS

  E. JAX-RS

  Correct Answer: BC

• Question 37:

  You are asked to propose a software deployment strategy that will reduce a client will also make deploying and testing their software stack more efficient.

  Which element would you include in your proposal?

  A. Vertically scalable platform

  B. Horizontally scalable platform

  C. Virtualized platform

  D. Standard unit testing software

  Correct Answer: C

• Question 38:

  The integration team has reported a problem in testing a few deployed MDBs. By design, each MDB listens to one of four named queues. Two producers write messages to each queue. The test issues messages of the same payload type that each producer will send, but varies the number or size of these messages to measure the messaging server's performance.

  The team has noticed that the utilization remains at the same high rate any time the test writes messages destined for the third MDB. The message server log does not reveal any failure in sending messages to this MDB. Which anticipation expresses cause for this condition?

  A. Hot Potato

  B. Leaky Abstraction

  C. Cache less Cow

  D. Golden Hammer

  Correct Answer: A

• Question 39:

  A company that sells avatar skins tor virtual reality environments has a static website for advertising their wares. The website was built using What You See Is What You Get (WYSIWYG) html editor and also contains a lot of JavaScript. The company now wants to add server side processing capabilities developing a shopping application, the company is considering using JavaServer Faces (JSF)

  Which statement is true?

  A. The JavaScrip code has to be rewritten to conform to JSF standards.

  B. JSF tags cannot be integrated into the HTML generated by WYSIWYG editors. 100% Real QandAs | 100% Real Pass

  C. The web pages cannot be previewed accurately with a generic WYSIWYG HIML editor.

  D. The web pages must be converted into Face lets.

  Correct Answer: C

• Question 40:

  Which three actions represent best practices when implementing an exception handling strategy for an application?

  A. Create a custom checked exception if an alternative action can be taken to resolve the exception.

  B. Create a custom unchecked exception if the action to resolve the exception cannot be defined.

  C. Always log the specific exception before re-throwing a wrapped exception.

  D. Always throw exceptions in methods that are designed for exception handling.

  E. Always include information specific to the error when logging an exception.

  Correct Answer: ABE