Oracle 1Z0-863 Online Practice Questions and Exam Preparation

Oracle 1Z0-863 Online Questions & Answers

• Question 11:

  Which statement is true about JAX-WS dynamic invocation?

  A. Dynamic invocation clients use RPC typed interfaces to invoke the Web service.
  B. Dynamic invocation lets clients access a Web service without a WSDL.
  C. Dynamic invocation clients are bound at design-time to a single Web service.
  D. Dynamic invocation requires the client to statically configure the Web service proxy.
  E. The dynamic proxies provide dynamic invocation in JAX-WS.
  B. Dynamic invocation lets clients access a Web service without a WSDL.

• Question 12:

  A company is building a Java EE 5 purchase order processing system. This system will integrate with an external invoicing system as part of the purchase order approval process. A developer created a new client application to access the invoicing system using request-response, but a new service call is receiving errors every time it invokes the necessary Web service.

  Which statement is true about the Body element of the SOAP reply message?

  A. It must NOT contain any fault elements.
  B. It will contain a fault element for each error.
  C. It will contain exactly one fault element.
  D. It must contain zero or one fault element.
  E. It must contain an array of fault elements.
  D. It must contain zero or one fault element.

• Question 13:

  Which three can an EJB-based endpoint use? (Choose three.)

  A. HTTP sessions
  B. Java EE 5 declarative security
  C. Java EE 5 programmatic security
  D. client-demarcated transactions
  E. container-managed transactions
  B. Java EE 5 declarative security
  C. Java EE 5 programmatic security
  E. container-managed transactions

• Question 14:

  A company's new investment management Java application and a legacy stock trader application need to communicate, but they use different JMS implementations. A developer decides to implement a JMS bridge to solve the problem. Which two advantages does this pattern provide? (Choose two.)

  A. It converts the interface of a class into another interface that clients expect.
  B. It decouples an abstraction from its implementation so that the two can vary independently.
  C. It dynamically attaches additional responsibilities to an object.
  D. It optimizes network traffic.
  E. It is vendor independent.
  B. It decouples an abstraction from its implementation so that the two can vary independently.
  E. It is vendor independent.

• Question 15:

  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
  C. by adding a conversation id to the SOAP headers
  D. by requiring clients to send a client id parameter to all methods

• Question 16:

  Which two statements are true about the Web services? (Choose two.)

  A. SOAP messages are compressed during transport.
  B. You must implement session tracking via HTTP cookies.
  C. The WSDL defines services as collections of network endpoints.
  D. All data shared between Java and non-Java components must be in XML format.
  E. Data interchange is standardized in XML.
  F. Stateful Web services must be implemented in a heterogeneous environment.
  C. The WSDL defines services as collections of network endpoints.
  E. Data interchange is standardized in XML.

• Question 17:

  A developer is asked to determine which Web services approach is correct for a new project. A SOAP-based Web service must be created and deployed in an environment where many customers will use it. These customers will be responsible for developing their own clients, based on the published WSDL. Which approach is correct to use first in this situation?

  A. Java, because the WSDL generated later will be more accurate
  B. WSDL, because the service and customers can benefit from the strongly typed schema
  C. Java, because the service must be efficient to support many customers
  D. WSDL, because tools allow existing classes to be easily mapped without modification
  B. WSDL, because the service and customers can benefit from the strongly typed schema

• Question 18:

  Given the Java fragment and schema:

  1.

  //-- Java code fragment

  2.

  public class PurchaseOrder{

  3.

  public javax.xml.datatype.XMLGregorianCalendar orderDate;

  4.

  }

  5.

  //-- Schema fragment

  6.

  7.

  8.

  9.

  minOccurs="0"/>

  10.

  11.

  Which two statements are true about .Net and WCF interoperability for this data? (Choose two.)

  A. The GregorianCalendar maps to an equivalent date type in both Java and .Net.
  B. .Net will generate code with the calendar as a string that functions as well as a date.
  C. .Net will generate code with the calendar as a string that is not type equivalent.
  D. Use of the @XmlSchemaType annotation causes .Net to properly map to a date.
  E. Casting in the case of WSIT services is an effective approach for the WCF client.
  C. .Net will generate code with the calendar as a string that is not type equivalent.
  D. Use of the @XmlSchemaType annotation causes .Net to properly map to a date.

• Question 19:

  An organization has business logic implemented in EJB components. Current clients use container-managed, role-based security to access the business logic using RMI. Management has determined that the business logic must be made available to non-RMI clients using a Web service. Which container-managed Web service security mechanism must the development team use to allow Web service clients to use the current security model?

  A. XKMS
  B. XACML
  C. XML Digital Signature
  D. HTTP Basic Authentication
  E. annotations mapped to the JAX-WS runtime
  D. HTTP Basic Authentication

• Question 20:

  A company is creating an XML schema that describes various training materials available for purchase by students.

  Given the namespace aliases and schema that appear in the WSDL file for a document-style Web service:

  xmlns:xsd="http://schemas.xmlsoap.org/wsdl/"

  xmlns:book="http://www.sun.com/books"

  ...

  Which is a valid message element for this WSDL file?

  D