Practice Exam

Q2) Functional vs Non-Functional refers to

• a) Prototype
• b) Requirements
• c) Testing
• d) Architecture
• e) Maintenance

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Correct Answer: b) Requirements

 

Q5) Benefits of using cloud software.

• a) No need for maintenance (for clients)
• b) Availability
• c) Scalability
• d) Less staff required
• e) All the above

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Correct Answer: e) All the above

 

Q8) The Strategy pattern replaces inheritance with __________________

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Correct Answer: Composition

 

Q11)

public class Geometry {
    int area(int height, int width) {
        return height * width;
    }

    int volume(int height, int width, int depth) {
        int area = height * width;
        return area * depth;
    }
}

The above code violates:

• a) YAGNI
• b) DRY
• c) Dependency Inversion
• d) Liskov Substitution
• e) Single Responsibility

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Correct Answer: b) DRY

 

Q14) Which of the following are true? (Note: More than one can be true.)

public class MedicalRecord {
    public Database database;

    public MedicalRecord(Database database) {
        this.database = database;
    }
}

• a) MedicalRecord and Database have an IS-A relationship
• b) MedicalRecord composes the Database object
• c) Database is encapsulated
• d) MedicalRecord is dependent on Database
• e) MedicalRecord and Database have a HAS-A relationship

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Correct Answers: b), d), e)

 

Q17) Which of these do not involve incremental development.

• 1) Xtreme Programming
• 2) Agile
• 3) Scrum
• 4) Software Reuse
• 5) Iterative development

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Correct Answer: 4) Software Reuse

 

Q20) Which Design Pattern uses the principle, Open for Extension Closed for Modification?

• 1) Observer
• 2) Strategy
• 3) All the above
• 4) None of the above

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Correct Answer: 3) All the above

 

Q23) Challenges facing software engineers.

• 1) New technologies
• 2) Reduced delivery times
• 3) Developing trustworthy software
• 4) Global Competition
• 5) All the above

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Correct Answer: 5) All the above

 

Q26)

public interface Bank {
    void borrow();
}

public class BankOfFrance implements Bank {
    public void borrow() {}
}

public class BankOfSpain implements Bank {
    public void borrow() {}
}

public class FinancialInstitutions {
    List<BankOfFrance> frenchBanks = new ArrayList<>();
    List<BankOfSpain> spanishBanks = new ArrayList<>();

    public void borrowFromBanks() {
        for(BankOfFrance b : frenchBanks)
            b.borrow();

        for(BankOfSpain b : spanishBanks)
            b.borrow();
    }
}

Which of the following is true?

• 1) FinancialInstitutions class is using Inheritance
• 2) FinancialInstitutions class should use composition
• 3) BankOfFrance should use extends rather than implements
• 4) FinancialInstitutions is closed for modification
• 5) FinancialInstitutions should use the Observer pattern

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Correct Answer: 5) FinancialInstitutions should use the Observer pattern

 

Q32) Regarding the singleton pattern, the following is true:

• a) Only one instance of an object
• b) Protects access to global object
• c) Object can be created first time it is used
• d) Object can be created when program starts or at runtime
• e) All the above

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Correct Answer: e) All the above

 

Q38) The following is true about incremental development…

• 1) Customer involvement is not recommended
• 2) All requirements are determined before coding
• 3) Easy to make modifications (change requirements)
• 4) Code does not need refactoring
• 5) Only testing done is unit testing

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Correct Answer: 3) Easy to make modifications (change requirements)

 

Q41) Software specification, software development, __________________, software evolution. Which step is missing?

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Correct Answer: Testing

 

Q44) Software for the following are usually developed using different process models:

• 1) refrigerator software and medical software
• 2) airplane software and medical software
• 3) game software and medical software
• 4) Scalable software and software that can handle unlimited users
• 5) your web site with Amazon checkout and using 3rd party graphics library for your game software

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Correct Answer: 3) game software and medical software

 

Q47)

• a) Feasibility
• b) Requirements
• c) Design
• d) Development
• e) Testing

These steps should be performed in the following order:

• 1) A), B), C), D), E)
• 2) D), B), C), A), E)
• 3) A), C), D), B), E)
• 4) Any order is OK
• 5) B), C), D), E), A)

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Correct Answer: 1) A), B), C), D), E)

 

Q50) The following type of software can possibly be reused for many different projects:

• 1) System
• 2) Object
• 3) Component
• 4) Web service
• 5) All the above

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Correct Answer: 5) All the above

 

Q56) Which process model is represented by the image below?

• 1) WaterFall
• 2) V Model
• 3) Incremental model
• 4) Re-Use Model
• 5) Step model

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Correct Answer: 3) Incremental Model

 

Q59) RE UL: The image below represents:

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Correct Answer: Inheritance

 

Q65) Which process model is represented by the image below?

• 1) Association
• 2) Abstraction
• 3) Encapsulation
• 4) Polymorphism
• 5) Inheritance

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Correct Answer: 1) Association

 

Q68) Which class below is the optimal way to design code?

public interface IDatabase {}

// Line 1:
public class Accounting extends Database {}

// Line 2:
public class Accounting implements IDatabase {}

// Line 3:
public class Accounting {
    IDatabase database;
}

// Line 4:
public class Accounting {
    Database database;
}

// Line 5:
public class Accounting {
    Object database;
}

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Correct Answer: Line 4: The one that uses composition

 

Q71) I am concerned over the large turnover of staff. I am concerned about my software being:

• 1) Dependable – work w/out crashing
• 2) Usable – easy to use
• 3) Scalable – can grow with demand
• 4) Efficient – won’t waste computer resources
• 5) Maintainable – easy to fix

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Correct Answer: 5) Maintainable

 

Q74) Degree necessary to be a software engineer:

• 1) Computer Science
• 2) Computer Science and Management
• 3) Information Technology
• 4) Computer Science and Hardware
• 5) None of the above

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Correct Answer: 5) None of the above

 

Q77) Regarding the following:

• a) Testing
• b) Operational manual
• c) Java Code
• d) Requirements Document
• e) Technical Documentation
• f) Financing

Which of the following is true?

• 1) Only (a)(b)(c)(d)(e) are part of a software project
• 2) Only (a)(b)(c) are part of a software project
• 3) Only (c) is part of a software project
• 4) All must be written by software developers
• 5) All must be written by technical writers

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Correct Answer: 1) Only (a)(b)(c)(d)(e) are part of a software project

 

Q80) Which process model requires Software Discovery?

• 1) Discovery model
• 2) Software model
• 3) Iterative model
• 4) V model
• 5) Re-use model

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Correct Answer: 5) Re-use model