Software Engineering perguntas e respostas de entrevista
Pergunta 16. What is the purpose of version control systems like Git? Explain the difference between Git and SVN.
Version control systems track changes to source code over time, allowing collaboration and providing a history of changes. Git is distributed, while SVN is centralized.
Example:
Using Git to create branches for feature development and merging changes back into the main branch.
Pergunta 17. What is the difference between a shallow copy and a deep copy of an object?
A shallow copy creates a new object but does not duplicate the nested objects. A deep copy creates a new object and recursively duplicates all objects referenced by the original.
Example:
Creating a shallow copy of an array in Python using 'copy.copy()'. Creating a deep copy using 'copy.deepcopy()'.
Pergunta 18. Explain the concept of virtual functions in C++. How do they contribute to polymorphism?
Virtual functions in C++ allow dynamic method binding, enabling the selection of the appropriate method at runtime based on the object's type. They contribute to polymorphism by enabling runtime method resolution.
Example:
Declaring a virtual function in a base class and providing specific implementations in derived classes.
Pergunta 19. What is the role of a container in the context of virtualization and containerization?
Containers provide a lightweight and portable way to package and run applications with their dependencies. They encapsulate the application, runtime, libraries, and other settings, ensuring consistency across different environments.
Example:
Using Docker to containerize a web application and deploy it across different environments.
Pergunta 20. Explain the concept of a deadlock in concurrent programming. How can deadlocks be prevented?
A deadlock occurs when two or more threads are blocked forever, each waiting for the other to release a resource. Deadlocks can be prevented by using techniques such as resource allocation graphs and avoiding circular wait conditions.
Example:
Illustrating a deadlock scenario with two threads competing for resources without proper synchronization.
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