Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech IV MIDDLEWARE TECHNOLOGIES Previous Question Paper (May - 2019 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What is Client/Server Computing?
Answer
Client/Server computing is a distributed application structure that partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients. Clients initiate requests for services, while servers provide the requested resources or processing capabilities.
Write down the similarities and dissimilarities between client/server computing and distributed computing.
Answer
Similarities: Both models involve multiple autonomous computers communicating over a network to achieve a common goal and rely on message passing or remote procedure calls.
Dissimilarities: Client/Server is a specific architectural pattern with a clear separation of roles (requestor vs. provider), whereas distributed computing is a broader paradigm where tasks are partitioned across multiple nodes that may act as both clients and servers simultaneously, often aiming for transparency and resource sharing across a peer-to-peer or grid-like structure.
Define the terms: JDBC and CORBA.
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State the characteristics of JAVA RMI.
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What are JIT compilers?
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Mention the advantages and disadvantages of static method invocation of CORBA with dynamic method invocation.
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Write a brief note on the BOA unshared server activation policy.
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What is the need of Basic Object Applet?
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Define the terms: EJB and OTM.
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What are the activities of CORBA object Transaction Monitors on behalf of components?
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Part B
Describe the functionality of various components of a client/server computing.
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List and explain the benefits of client/server computing models.
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Explain the architecture and various services provided by CORBA architecture.
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What are the features of C#? Explain the basic structure and elements of a C# program.
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Discuss in detail about CORBA Naming Service.
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Illustrate how to run client/server program on a portable CORBA/IIOP platform.
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Explain in detail about Attribute-Based Programming and its features.
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Enumerate the steps to activate objects in a shared server activation scenario.
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Give a brief overview of the JAVA-to-IDL mapping.
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What is a delegation event model? Describe JavaBean event delegation model with relevant example.
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List and explain the major functions provided by server-side container (OTM) to the EJBs with a neat diagram.
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What is the client’s view of an EJB? Explain how does the client invokes an EJB object?
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Give a detail scenario of EJB Client/Server interaction.
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Why is it required to have EJB callback interface in EJB container/Bean? Explain briefly.
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