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Exam Code: 310-231Exam Name: Sun Certified Developer for Java Web Services 5
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310-231 Test Answers Total Q&A: 96 Questions and Answers
Last Update: 2014-06-11
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Exam Code: 310-090Exam Name: Sun Certified Business Component Developer for J2EE 1.3
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310-090 Real Exams Total Q&A: 409 Questions and Answers
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NO.1 A developer is analyzing an existing Web service with performance problems. The analysis reveals
the service employs SOAP over HTTP. When the size of the encoded binary files grew with changing
business requirements, the service slowed.
What are two effective solutions for this problem? (Choose two.)
A. Separating the XML and binary content with WS-Filtering implemented in WSIT will improve efficiency.
B. XML documents larger than 1 KB with binary encoding should be optimized.
C. WS-Addressing can ease congestion by routing messages over other protocols.
D. For existing services, the most effective solution is to increase the available bandwidth.
E. MTOM can reduce both processing and bandwidth required by SOAP with attachments.
Answer: BE
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NO.2 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
Answer: AD
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NO.3 A team of developers is describing a set of endpoints in their new SOA application.
Given the WSDL extract:
<service name="InventoryServices">
<port name="PurchaseOrder" binding="tns:POBinding">
<soap:address location="http://192.168.0.2:8080/inventory"/>
</port>
<port name="Invoice" binding="tns:InvoiceBinding">
<soap:address location="http://192.168.0.2:8080/inventory"/>
</port>
</service>
Which statement is true about this WSDL extract?
A. The extract is WS-I Basic Profile 1.1 compliant because both port element names are different.
B. The extract is NOT WS-I Basic Profile 1.1 compliant because both port elements point to the same
location.
C. The extract is WS-I Basic Profile 1.1 compliant because both port elements point to different binding
elements.
D. The extract is NOT WS-I Basic Profile 1.1 compliant because it contains two port elements in the same
service.
E. The extract is WS-I Basic Profile 1.1 conformant because both port element names are different.
F. The extract is WS-I Basic Profile 1.1 conformant because the port, binding, and service element
combinations are unique.
Answer: B
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NO.4 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
Answer: DE
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NO.5 Given:
1. try { // Call Web service Operation
2. org.me.calculator.client.CalculatorWS port =
3. service.getCalculatorWSPort();
4. // TODO initialize WS operation arguments here
5. int i = 3;
6. int j = 4;
7. // TODO process result here
8. int result = port.add(i, j);
9. out.println("<p>Result: " + result);
10.
11. } catch (Exception ex) {
NO.6 A developer is creating an XML schema using the xsd:all operator.
Given the code:
<types>
<schema targetNamespace="http://sun.cert/types"
xmlns:tns="http://sun.cert/types"
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:complexType name="Person">
<xsd:all>
<!-- insert code here -->
</xsd:all>
</xsd:complexType>
</schema>
</types>
Which two element definitions, when inserted into the given schema fragment, result in a correct schema
type definition? (Choose two.)
A. <xsd:element name="first" type="xsd:string"/>
B. <xsd:element name="items" type="xsd:long" maxOccurs="5"/>
C. <xsd:element name="last" type="xsd:string" minOccurs="1" maxOccurs="1"/>
D. <xsd:element name="first" type="xsd:string" minOccurs="0" maxOccurs="5"/>
E. <xsd:element name="last" type="xsd:string" minOccurs="1" maxOccurs="5"/>
F. <xsd:element name="ssn" type="xsd:string" minOccurs="1" maxOccurs="unlimited"/>
Answer: AC
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NO.7 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.
Answer: BE
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NO.8 A student developer has created a new library of math functions to share with friends in a linear algebra
class. The developer is having difficulty getting people to come over to the dorm to see the new code
library, so he decides to deploy it as a Web service so that everyone can enjoy the features via the
Internet. One of the functions has this WSDL definition:
<portType name="MyMathLib">
<operation name="incCtr">
<input message="tns:incCtr"/>
</operation>
</portType>
Which two statements are true about this Web service? (Choose two.)
A. This is an asynchronous receive.
B. This is an asynchronous send.
C. The client must use SOAPFaultException to display any errors.
D. It must send a SOAP fault back to the sender.
E. It must NOT send a SOAP fault back to the sender.
Answer: BE
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