Evolutionary Prototyping Model

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What does the INVEST criteria stand for in a user story?

Independent, Negotiable, Valuable, Estimable, Small, and Testable

What is the purpose of acceptance criteria in a user story?

To confirm the user story via pre-written criteria

How long does a Scrum sprint typically last?

One to four weeks

What is the role of the Product Owner in a Scrum team?

Defining and sequencing the work to be done Signup and view all the answers

What is the main objective of a Scrum team?

To achieve a single objective Signup and view all the answers

What is the role of the Scrum Master?

To keep things organized and remove obstacles Signup and view all the answers

What is the characteristic of a user story in terms of size?

Small, typically completed in 3-4 days Signup and view all the answers

What is the outcome of a Scrum sprint?

A useful product increment Signup and view all the answers

What is one of the benefits of evolutionary prototyping model for customers?

Customers get early interaction with the system. Signup and view all the answers

What is a drawback of evolutionary prototyping model in terms of planning?

It is difficult to plan and determine when the project is completed. Signup and view all the answers

What is the primary goal of agile development?

To produce functioning code. Signup and view all the answers

What is one of the characteristics of agile development?

Iterative and incremental development. Signup and view all the answers

What is the benefit of evolutionary prototyping model for unclear requirements?

It is suitable for application domains that are not well known or have unclear requirements. Signup and view all the answers

What is one of the drawbacks of evolutionary prototyping model in terms of performance?

Quick prototypes with missing documentation lead to poor performance. Signup and view all the answers

What is one of the principles of agile development?

Focus on value. Signup and view all the answers

What is one of the practices of agile development?

Refactoring - rewriting code to make it simpler and easier to maintain. Signup and view all the answers

What is the main objective of refactoring code?

To simplify the code, reducing complexity and improving maintainability and extendability. Signup and view all the answers

What is the primary focus of the 'Moving Features' technique in refactoring?

Reassigning responsibilities or methods between classes to improve cohesion and reduce coupling. Signup and view all the answers

What tends to get more complicated in their logic over time in programming?

Conditional expressions. Signup and view all the answers

What is the main problem addressed by the 'Decompose Conditional' technique?

Complex conditional logic within a program. Signup and view all the answers

Why do long functions with complex conditionals become harder to read?

Because the code both in the condition checks and in the actions can obscure the underlying reasons. Signup and view all the answers

What is the benefit of refactoring code using techniques like 'Decompose Conditional'?

Easier to understand and maintain code. Signup and view all the answers

What is the primary goal of refactoring techniques for simplifying conditional logic?

To make conditional sections easier to understand. Signup and view all the answers

What is the result of redistributing code or functionality among classes using the 'Moving Features' technique?

A more balanced and logical design that is easier to maintain and extend. Signup and view all the answers

What is the purpose of the `checkPassword` method in the `UserValidator` class?

To validate a user's password Signup and view all the answers

What clean code rule is violated in the code `String yyyymmdstr = new SimpleDateFormat("YYYY/MM/DD").format(new Date());`?

The rule of descriptive variable names Signup and view all the answers

What is problematic with the code `int f(int j,int k){int i,m;m=0;for(i=0;i:getXXX() and setXXX() methods here}` from a design standpoint?

It violates the Single Responsibility Principle (SRP) Signup and view all the answers

Which SOLID principle is violated in the `CityMap` class?

The Single Responsibility Principle (SRP) Signup and view all the answers

What is the issue with the `Computer` class?

It violates the Single Responsibility Principle (SRP) Signup and view all the answers

What is the purpose of the `UserGateway` class in the `UserValidator` class?

To find a user by name Signup and view all the answers

What is the purpose of the `cryptographer` object in the `UserValidator` class?

To decrypt the password phrase Signup and view all the answers

What is the issue with the code `public void emailClients(List clients) { ... }`?

It is not following the Don't Repeat Yourself (DRY) principle Signup and view all the answers

What is the purpose of the `readResolve()` method in the Singleton class?

The <code>readResolve()</code> method is used to return the singleton instance, ensuring that the deserialized instance is the same as the original instance. Signup and view all the answers

Why is eager instantiation necessary for a Singleton to work properly in a multithreaded environment?

Eager instantiation ensures that the instance creation happens at the time of class loading, making it thread-safe. Signup and view all the answers

What is the benefit of using lazy initialization in a Singleton class?

Lazy initialization delays the instantiation of the Singleton until it is actually needed, which can be beneficial when the initialization is costly. Signup and view all the answers

Why is the `getInstance()` method static in the Singleton class?

The <code>getInstance()</code> method is static because it needs to be accessed without creating an instance of the Singleton class. Signup and view all the answers

What is the purpose of the `hashCode()` method in the Singleton class?

The <code>hashCode()</code> method is used to get the hash code of the Singleton instance, which can be used to compare instances. Signup and view all the answers

What happens when the `ObjectInputStream` reads the serialized Singleton instance?

The <code>ObjectInputStream</code> reads the serialized Singleton instance and returns a new instance, which is not the same as the original instance. Signup and view all the answers

What is the difference between eager and lazy initialization in a Singleton class?

Eager initialization creates the instance at the time of class loading, while lazy initialization creates the instance when it is first needed. Signup and view all the answers

Why is it necessary to override the `readResolve()` method in a Singleton class?

The <code>readResolve()</code> method is necessary to ensure that the deserialized instance is the same as the original instance, maintaining the Singleton pattern. Signup and view all the answers

Evolutionary Prototyping Model

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Questions and Answers

What does the INVEST criteria stand for in a user story?

What is the purpose of acceptance criteria in a user story?

How long does a Scrum sprint typically last?

What is the role of the Product Owner in a Scrum team?

What is the main objective of a Scrum team?

What is the role of the Scrum Master?

What is the characteristic of a user story in terms of size?

What is the outcome of a Scrum sprint?

What is one of the benefits of evolutionary prototyping model for customers?

What is a drawback of evolutionary prototyping model in terms of planning?

What is the primary goal of agile development?

What is one of the characteristics of agile development?

What is the benefit of evolutionary prototyping model for unclear requirements?

What is one of the drawbacks of evolutionary prototyping model in terms of performance?

What is one of the principles of agile development?

What is one of the practices of agile development?

What is the main objective of refactoring code?

What is the primary focus of the 'Moving Features' technique in refactoring?

What tends to get more complicated in their logic over time in programming?

What is the main problem addressed by the 'Decompose Conditional' technique?

Why do long functions with complex conditionals become harder to read?

What is the benefit of refactoring code using techniques like 'Decompose Conditional'?

What is the primary goal of refactoring techniques for simplifying conditional logic?

What is the result of redistributing code or functionality among classes using the 'Moving Features' technique?

What is the purpose of the checkPassword method in the UserValidator class?

What clean code rule is violated in the code String yyyymmdstr = new SimpleDateFormat("YYYY/MM/DD").format(new Date());?

What is problematic with the code int f(int j,int k){int i,m;m=0;for(i=0;i:getXXX() and setXXX() methods here} from a design standpoint?

Which SOLID principle is violated in the CityMap class?

What is the issue with the Computer class?

What is the purpose of the UserGateway class in the UserValidator class?

What is the purpose of the cryptographer object in the UserValidator class?

What is the issue with the code public void emailClients(List clients) { ... }?

What is the purpose of the readResolve() method in the Singleton class?

Why is eager instantiation necessary for a Singleton to work properly in a multithreaded environment?

What is the benefit of using lazy initialization in a Singleton class?

Why is the getInstance() method static in the Singleton class?

What is the purpose of the hashCode() method in the Singleton class?

What happens when the ObjectInputStream reads the serialized Singleton instance?