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2021 Sep 1Z0-862 exam answers
Q11. Two companies communicate using Web services in a business transaction. Which mechanism is designed to ensure that business data CANNOT be renounced, or a transaction denied, by either one?
A. integrity provided by public key certificates and digital signatures
B. confidentiality provided by asymmetric or symmetric cryptography
C. identity management provided by private keys and certificate authorities
D. non-repudiation provided though public key cryptography by digital signing
Q12. Which code fragment correctly opens an input stream for processing using StAX?
A. StAxInputFactory foo = StAxInputFactory.newInstance(); FileInputStream bar = newFileInputStream("readit/readit.xml"); StAxStreamReader reader = foo.createStAxStreamReader(bar);
B. XMLInputFactory foo = XMLInputFactory.newInstance(); FileInputStream bar = newFileInputStream("readit/readit.xml"); XMLStreamReader reader = foo.createXMLStreamReader(bar);
C. StreamInputFactory foo = StreamInputFactory.newInstance(); InputStream bar = newInputStream("readit/readit.xml"); StreamReader reader = foo.createStreamReader(bar);
D. StAxInputFactory foo = StAxInputFactory.newInstance(); InputStream bar = newInputStream("readit/readit.xml"); XMLStreamReader reader = foo.createXMLStreamReader(bar);
Q13. A Java EE 5 application contains business logic composed of EJB3 beans. All current clients are Java applications accessing the business logic using RMI. Some clients are remote (running in different JVMs) and some are local (running in the same JVM).Which two occur if EJB components are exposed as Web services? (Choose two.)
A. New applications can use published interfaces to access existing applications.
B. Current local clients must access the Web services in the application as an URL.
C. WSDL documents define common types for all clients.
D. Current remote clients must switch from RMI to Web service access.
E. Delivery of messages is guaranteed for local clients.
Q14. Which three statements about parsers are true? (Choose three.)
A. SAX and StAX are bi-directional.
B. DOM and StAX are bi-directional.
C. StAX is a push API, whereas SAX is pull.
D. SAX is a push API, whereas StAX is pull.
E. SAX and StAX are read-only.
F. SAX and DOM can write XML documents.
G. StAX and DOM can write XML documents.
Q15. Which three are standard defined MIME binding types according to WSDL 1.1? (Choose three.)
A. mime encoded
C. soap related
E. uddi encoded
Update 1Z0-862 test preparation:
Q16. Which three are valid JAX-WS clients? (Choose three.)
B. Java SE 6 classes
D. a WSDL presented by Ajax
E. stateful session bean
Q17. 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
Q18. A Web service needs to validate the credit rating for a loan. The service requires a social security number, full name, and date of birth as input and returns one of many possible documents. Which statement is true?
A. The developer must use an EJB-based endpoint.
B. The developer must use a procedure-style Web service.
C. The developer must use a document-style Web service.
D. The developer can use a procedure-style or document-style Web service.
Q19. A company needs to process DOM documents received from its customers through an EJB3 endpoint. Which two APIs will a developer need to invoke to process these DOM documents? (Choose two.)
Q20. Which two statements are true about creating a Web service with JAX-WS? (Choose two.)
A. Stateless Web services must be created with HTTP servlet endpoints.
B. Creating the portable artifacts by hand is slow, but makes a service easier to maintain.
C. All Java-based endpoints share a common packaging model.
D. EJBs can serve as endpoints if hosted in a container with runtime and service support.
E. JAX-WS supports creating services from source and compiled code without a WSDL.