SOA Technology Concepts

1.

A SOAP message is an XML document that is comprised of a set of pre-defined parts. Which of the following are parts that can be found in a SOAP message? (Select all that apply.)

Envelope Body Header Footer

2.

Data model transformation is a core service function that can be performed by proven technologies that have been around for years. Therefore, it is recommended that you look for opportunities to apply this technology wherever possible, especially in larger, more complex service compositions.

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3.

A SOAP-based Web service is required to transmit an XML-based invoice document to a REST service. However, the SOAP-based Web service is designed to represent invoice data using an XML schema that is different from the XML schema used within the REST service. How can the disparity between the XML
schemas, used by these two services, be overcome so that they can exchange the invoice document?

A layer of data format transformation logic needs to be introduced based on mashup technologies, such as DTD and WS-Transform. A layer of protocol transformation logic needs to be introduced based on Web technologies, such as HTTP and FTP. A layer of data model transformation logic needs to be introduced, based on XML technologies, such as XSLT. There is no technique or technology for overcoming differences between XML schemas.

4.

Identify what is wrong with this statement: "SOAP-based Web services A and B are participating in a runtime transaction that is carried out as per the WS- AtomicTransaction standard. When a message sent by Service A is rejected by Service B due to a violation of a WS-Policy definition expressed as part of the Service B contract, Service A is forced to issue an Abort message, thereby requiring the transaction to be rolled back."

WS-AtomicTransaction does not support the rollback of changes that occur during runtime transactions. WS-Policy definitions are not expressed as part of the service contract. SOAP-based Web services cannot have policies and cannot participate in runtime transactions because they are limited to the use of a uniform service contract. There is nothing wrong with this statement.

5.

It is possible to have 3 SOAP-based Web services, each with a WSDL definition that has an operation named Update.

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6.

MEP stands for:

Message Extension Pair Message Exchange Pattern Mixed Entry Platform Mixed Elevation Program

7.

WS-BPEL is a technology that can be used to express service composition logic for SOAP-based Web services.

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8.

Identify what is wrong with this statement: "If I have 4 SOAP-based Web services, I must have 4 WSDL definitions and 4 XML schemas."

SOAP-based Web services don't use XML schemas for their WSDL definitions. WSDL definitions can share the same XML schema and can also link to multiple XML schemas, so stating that 4 SOAP-based Web services must have 4 XMLschemas is incorrect. Each WSDL definition must have at least 2 XML schemas, so the correct amount of required XML schemas in this case is 8. There is nothing wrong with this statement.

9.

Which of the following statements is true?

An enterprise service bus commonly provides service broker-related features that allow two services using different data models (that represent the same

business document) to communicate with each other. An enterprise service bus commonly provides service broker-related features that allow two services using different communication protocols to communicatewith each other. An enterprise service bus commonly provides service broker-related features that allow two services to communicate even though they use differentcommunication protocols and different data models (that represent the same business document). All of these statements are true.

10.

Which of the following statements is true?

WSDL definitions can use XML schemas to define the types used by WSDL input and output messages. WSDL definitions can use XML schemas to define the types used by WSDL input and output operations. WSDL definitions can use XML schemas to define the types used to establish the location used by service consumers to access the WSDL definitions. WSDL definitions cannot be used in conjunction with XML schemas.

SOA Technology Concepts

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SOA Technology Concepts

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