Download JNTUA MCA 2015 June-July Supply 5th Sem 9F00505c Design Patterns Question Paper

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Code: 9F00505c

Time: 3 hours

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MCA V Semester Supplementary Examinations July 2015

DESIGN PATTERNS

(For students admitted in 2009, 2010, 2011 and 2012 only)

Max Marks: 60

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Answer any FIVE questions

All questions carry equal marks

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1. (a) Give brief description about the areas where the design patterns are applied.
   (b) Explain about how the user interfaces are created in Smalltalk.

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2. Explain in detail about the various user operations that are to be performed on Lexi.
3. (a) List and explain the key features of creational patterns.
   (b) What is the motivation for builder pattern? Explain it in detail.
4. (a) List and explain the various issues that should be considered while designing the adapter pattern.
   (b) Write a short note on bridge pattern.

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5. (a) Give brief description about the applicability, structure and participants of decorator pattern.
   (b) Write a sample code for the façade on compiler subsystem.
6. (a) Which pattern is used to express the instances of the problem as sentences in simple language? Explain.
   (b) Explain the structure, participants and collaborations of a command pattern.
7. What is the motivation for mediator pattern? Explain in detail.

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8. (a) Give brief description about the visitor pattern.
   (b) Write short notes on decoupling sender and receivers.

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