Download JNTUH MCA 5th Sem R13 2018 January 815BF Design Patterns Question Paper

R13

Code No: 815BF

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA V Semester Examinations, January - 2018

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DESIGN PATTERNS

Time: 3 Hours

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Max. Marks: 60

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Note: This question paper contains two parts A and B.

Part A is compulsory which carries 20 marks. Answer all questions in Part A. Part B
consists of 5 Units. Answer any one full question from each unit. Each question carries 8

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marks and may have a, b, c as sub questions.

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PART - A

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5 ? 4 Marks = 20

1.a)

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The Gang of Four suggests a few strategies for creating good object-oriented designs. What
are they?

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[4]

b)

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What is the intent of Abstract Factory pattern? Explain.

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[4]

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c) What is Composite pattern? Give an example.

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[4]

d) Under what conditions should an Observer pattern not be used? Explain.

[4]

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e) Explain the brief history of Design patterns.

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[4]

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PART - B

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5 ? 8 Marks = 40

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2.

What is Design pattern? Explain the step by step approach to apply a design pattern
proficiently? Also write the structure of the design pattern template.

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[8]

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OR

3.

List out different design patterns that are commonly used. Write the catalog of design

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patterns and its organization. What are the criteria used to select them? Explain. [8]


4.

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What is creational pattern? Discuss about Singleton and Prototype patterns in detail.[8]

OR

5.a)

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Explain the functionality of operations that are accessed indirectly through user operations.

b)

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Discuss about the implementation issues of Builder pattern.

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[8]


6.a)

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Differentiate between adapter and bridge design pattern.

b)

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What are the known uses of adapter structural pattern? Explain.



[8]

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OR

7.a)

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Write about the language features that are exploited by Proxy pattern.

b)

What are participants of flyweight pattern? Discuss about the consequences of

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flyweight pattern.

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[8]

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8.

List out various behavioral patterns. Explain in detail about Chain of Responsibility and
command behavioral patterns.

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[8]

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OR

9.a)

What are the consequences of Mediator pattern? Explain.

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b)

What are the issues to be considered while applying Memento pattern?

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[4+4]

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10.

Write in detail about Strategy and Visitor behavioral Patterns.

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[8]

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OR

11.a) Explain the consequences of Template Method patterns.
b) Write the implementation issues of State behavioral pattern.

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[4+4]

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