Ducen It Interview Questions and Answers

Threads in Java allow for concurrent execution of code, enabling multitasking and improving performance.

• Threads are lightweight sub-processes within a process.

• They allow for concurrent execution of code, enabling multitasking.

• Threads share the same memory space, allowing for efficient communication and data sharing.

• Examples include creating threads using the Thread class or implementing the Runnable interface.

Volatile keyword ensures visibility of changes to variables across threads. Reified keyword is used to access type information at runtime in generics.

• Volatile keyword is used to indicate that a variable's value will be modified by different threads.

• It ensures that changes made by one thread to a volatile variable are visible to other threads.

• Reified keyword is used in generics to access type information at runtime, whi...read more

Multi module architecture in Android involves breaking down an app into multiple modules for better organization and scalability.

• Pros: better organization, easier maintenance, faster build times, code reusability

• Cons: increased complexity, potential for dependency issues, learning curve for developers

• Example: Breaking down an app into separate modules for UI, networking, and data storage can make it easier to work on d

Generics in Java allow for creating classes, interfaces, and methods that operate on types parameterized at compile time.

• Generics provide type safety by allowing the compiler to detect and prevent type errors at compile time.

• They enable code reusability by writing generic algorithms that work on different types.

• Example: List<String> names = new ArrayList<>();

• Example: public class Box<T> { private T va

Agile values include individuals and interactions over processes and tools, while Scrum values include commitment, courage, focus, openness, and respect.

• Agile values prioritize individuals and interactions over processes and tools

• Scrum values include commitment, courage, focus, openness, and respect

• Scrum ceremonies include Sprint Planning, Daily Standup, Sprint Review, and Sprint Retrospective

• Story points are a unit of...read more

As a project manager, I prepare various documents such as project plans, schedules, budgets, risk assessments, and progress reports. I contribute by leading the team, managing resources, and ensuring project success.

• Prepare project plans outlining scope, objectives, deliverables, and timelines

• Create schedules to allocate tasks and track progress

• Develop budgets to manage project costs effectively

• Conduct risk assessments...read more

Provide clear expectations, offer support and training, provide feedback and recognition, set goals and milestones.

• Clearly communicate expectations and goals to the resource.

• Offer support and training to help the resource improve their skills and knowledge.

• Provide regular feedback and recognition for progress made.

• Set specific goals and milestones to track improvement.

• Create a development plan with the resource to addr...read more

Scrum of Scrums is a scaled agile framework where multiple Scrum teams coordinate their work. PI planning is a key event in SAFe where teams plan their work for the upcoming Program Increment.

• Scrum of Scrums involves representatives from each Scrum team meeting regularly to discuss dependencies and progress.

• PI planning is a two-day event where teams align on their objectives, dependencies, and priorities for the upcomi...read more