310-231 Exam

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Exam : SUN 310-231
Title : Sun Certified Developer for Java Web Services 5


1. Which two statements are true about the role of XML schemas in Web services? (Choose two.)
A. DTDs provide stricter data typing than XML schemas.
B. XML schemas can be used to validate the organization of XML documents.
C. XML schemas contain a vocabulary, content model and data types.
D. DTDs are easier to map to Java than XML schemas, and so remain more popular.
E. The W3C recommends that XML schemas be referred to as XSD.
F. The W3C has designated that XML schemas be referred to as WXS.
Answer: BC

2. 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

3. 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

4. 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

5. A developer must describe a message that contains multiple parts using non-primitive data types.
Which two code fragments produce equivalent composite message structure definitions? (Choose two.)
A. <types>
<schema .... >
<complexType name="FOO" type="tns:FOOType"/>
<element name="FOOType">
.
.
.
</element >
<complexType name="BAR" type="tns:BARType"/>
<element name="BARType">
.
.
.
</element >
</schema>
</types>
<message name="FOO">
<part name="FOO" complexType="tns:FOO"/>
<part name="BAR" complexType="tns:BAR"/>
</message>
B. <types>
<schema .... >
<element name="FOO" type="tns:FOOType"/>
<complexType name="FOOType">
.
.
.
</complexType>
<element name="BAR" type="tns:BARType"/>
<complexType name="BARType">
.
.
.
</complexType>
</schema>
</types>
<message name="FOO">
<part name="FOO" element="tns:FOO"/>
<part name="BAR" element="tns:BAR"/>
</message>
C. <types>
<schema .... >
.
.
.
<complexType name="Composite">
<choice>
<element name="FOO" minOccurs="1" maxOccurs="1" type="tns:FOOType"/>
<element name="BAR" minOccurs="0" maxOccurs="unbounded" type="tns:BARType"/>
</choice>
</complexType>
</schema>
</types>
<message name="FOO">
<part name="composite" type="Composite"/>
</message>
D. <types>
<schema .... >
.
.
.
<complexType name="Composite">
<choice>
<element name="FOO" minOccurs="1" maxOccurs="1" type="tns:FOOType"/>
<element name="BAR" minOccurs="0" maxOccurs="unbounded" type="tns:BARType"/>
</choice>
</complexType>
</schema>
</types>
<message name="FOO">
<part name="composite" type="tns:Composite"/>
</message>
Answer: BD

6. 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

7. A team of developers is designing RESTful Web services for a new application.
What are three properties of the services? (Choose three.)
A. They can be stateful.
B. They can be stateless.
C. Components communicate by exchanging representations of the resource.
D. Components communicate by directly performing operations on the resource.
E. They require WSDL service API definitions.
F. Responses can be labeled as cacheable or non-cacheable.
Answer: BCF

8. According to the WS-I Basic Profile 1.1, which two statements are true about the targetNamespace attribute for xsd:schema elements that are children of WSDL 1.1 type element? (Choose two.)
A. Its value must be valid unless it has xsd:import, xsd:annotation, or both as its only child elements.
B. Its value must be empty unless it has xsd:import, xsd:annotation, or both as its only child elements.
C. It should have same the value as the namespace attribute on the wsdl:import element in a document being imported.
D. It must have same the value as the namespace attribute on the wsdl:import element in a document being imported.
Answer: AD

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