Oracle Oracle Certifications 1Z0-863 Questions & Answers

• Question 31:

  A developer new to Web services is researching how a client can connect to a service. It is clear that some models provide better abstraction while others offer more power when working with messages. What is the correct reason to choose the Dispatch interface?

  A. Dispatch is a high-level API that helps hide the complexity of XML.

  B. REST services can be consumed with the Dispatch API and XML/HTTP bindings.

  C. The Dispatch interface supports the use JAXP to bind data.

  D. The Dispatch interface is represented internally as a SOAP message.

  Correct Answer: B

• Question 32:

  Given the Java fragment and schema:

  1.

  //-- Java code fragment

  2.

  public enum USState {MA, NH}

  3.

  //-- Schema fragment

  4.

  5.

  6.

  7.

  8.

  9.

  10.

  // .NET auto generated code from schema

  11.

  public enum usState { NH, MA }

  Which statement is true about .Net and WCF interoperability for this data?

  A. Based on the fragment, enumerations map well between Java and .Net.

  B. The subtle differences in the variable names make it clear these enumerations are NOT interoperable.

  C. The XML schema reveals the type on the enumeration is lost across the platforms.

  D. This exchange would be interoperable if the annotation @XmlEnum was applied to the Java method.

  Correct Answer: A

• Question 33:

  A company uses Web services to exchange mortgage and credit data as well as digital versions of associated documents. The data is confidential and it is common for the service and client to exchange applications, credit results, reports and more in a request/response format. Recently, the company has become concerned about the substantial cost of processing and message encryption with a PKI approach. What can be done to cut costs?

  A. use MTOM to optimize the messages and provide data confidentiality via XML Digital Signature

  B. because of the weak adoption of WS-SecureConversation on Java platforms, consider using Kerberos

  C. use HTTPS as it is both economical and adequate

  D. use WS-SecureConversation and MTOM to reduce the processing overhead

  Correct Answer: D

• Question 34:

  The WSIT project implements a number of WS-* specifications to aid developers in creating secure and interoperable services. What are two parts of the WS-specifications? (Choose two.)

  A. WS-ReliableMessaging

  B. WS-Bootstrapping

  C. WS-Eventing

  D. WS-Policy

  E. WS-WSITrust

  Correct Answer: AD

• Question 35:

  Which two statements are true about Java clients that use a security token service (STS) supported by the security features of WSIT? (Choose two.)

  A. The client only requires a keystore.

  B. STS requires a default user name configuration.

  C. Using an STS-issued token requires a keystore and a truststore.

  D. HTTPS must be configured.

  E. An authorized client receives a token digitally signed by the STS.

  Correct Answer: CE

• Question 36:

  A developer must create a program to parse a medium-sized XML file looking for an instance of a specific element. Once the developer has found the element, the value must be updated and saved to disk. Which two XML parsing APIs should be used in this situation? (Choose two.)

  A. SAX

  B. DOM

  C. StAX

  D. JAXM

  E. SAAJ

  Correct Answer: BC

• Question 37:

  A developer plans to refactor some of the company's existing Java EE 5 business services, moving them out of the existing monolithic application and into Web services. What are two benefits of exposing existing Java EE 5 functionality as a Web service? (Choose two.)

  A. improved manageability

  B. more finely-grained

  C. enhanced security

  D. loose coupling of functionality

  E. self-describing

  F. automatic session management

  Correct Answer: DE

• Question 38:

  What are three best practices that can be implemented when generating WS-I Basic Profile compliant Web services? (Choose three.)

  A. send arrays of nulls to ensure .NET and Java clients receive the same data

  B. define data types early in the integration cycle

  C. use complex data types to reduce the number of items exchanged

  D. test interoperability at every stage of development

  E. insert conformance headers in all SOAP messages

  F. keep data types simple for speed and stability

  Correct Answer: BDF

• Question 39:

  Which two statements are true about JAX-WS API using SOAP or REST? (Choose two.)

  A. JAX-WS prefers base 64 encoding of binary attachments for SOAP and REST.

  B. SOAP services require deployment descriptors and REST uses annotations.

  C. XML and REST are often easier to use than SOAP for stateless services.

  D. JAX-WS clients can bind both SOAP and raw XML from REST.

  E. REST services must be used to generate portable artifact classes mapped to SOAP.

  Correct Answer: CD

• Question 40:

  A stateful Web service is implemented as an EJB-based endpoint. What are two ways to maintain that state? (Choose two.)

  A. by using URL re-writing

  B. by adding a session cookie to the HTTP headers

  C. by adding a conversation id to the SOAP headers

  D. by requiring clients to send a client id parameter to all methods

  Correct Answer: CD