A firewall blocks all requests except those on ports 80 and 443. IIOP requestsA Can be processed because IIOP always works on port 80 B Cannot be processed because port 80 belongs to a different protocol C Can be processed by SSL D Can be processed via HTTP blocking E Can be processed via HTTP tunneling
Answer: E
Applications exchange messages through:A Active channels called Networks B Active Channels called Message Brokers C Virtual Channels called Digests D Virtual Channels called Destinations
Answer: D
Which of the following are true about Publish/Subscribe?A Subscribers receive a copy of every message. B It is a Pull (Polling) based model. C It is a push-based model. D It is generally used when one publisher wishes to send a message to one subscriber.
Choices A and C are correct.
In the Publish/Subscribe messaging architecture, publishers send messages to:A A specified node, which is then re-distributed to all subscribers. B Directly to all subscribers in the Topic subscription list. C A designated queue. D A component transaction monitor such as an EJB Server for further processing by a message driven bean.
Answer: A
In EJB 1.1 the EJB timeout property may be added to the Bean’s deployment descriptor for easier declarative life cycle management. True/False?A True B False
A B2C company uses J2EE based technologies for its e-commerce storefront. In order to increase scalability and availability they plan to add capacity to their existing server and also add a new server. Which of the following statements are true?A Adding capacity will improve scalability, as more memory would allow better bean pooling. B Adding a server would be difficult, as EJB servers cannot span multiple physical machines. C The proposal not does address horizontal scalability.
Choices A, D and E are correct.
CORBA specification does not provide support for which of the following?A Naming Service B Container managed Persistence C Security D Transaction Service E Event (Asynchronous Messaging) F Concurrency Control
Answer: B
Company ABC has a legacy application that can be accessed via CORBA. The company wants to integrate new Java based development with the existing legacy services. At this time no new services are planned. If the legacy application were primarily to be used as a CORBA server, which connectivity option would you recommend?A RMI-JRMP B RMI with JNI C Java IDL D RMI-IIOP E HTTP tunneling
Answer: C
Which of the following defines a standard architecture for connecting the J2EE platform to heterogeneous EIS applications?A J2SE B Java Web Start C JDBC D JMS E JCA
Answer: E
Which of the following methods is optional in the Home Interface of an Entity Bean?A Create() B FindByPrimaryKey() C Remove() D None of the above
Answer: A
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