HashStudioz Technologies Interview Questions and Answers

Multithreading in iOS allows concurrent execution of tasks, improving app responsiveness and performance.

• iOS uses Grand Central Dispatch (GCD) for managing multithreading, simplifying task execution.

• GCD provides dispatch queues: main queue (UI updates) and background queues (heavy tasks).

• Example: Use 'DispatchQueue.global().async' for background tasks like network calls.

• NSOperationQueue is another option, allowing...read more

My strength lies in my problem-solving skills, enabling me to tackle complex challenges efficiently and creatively.

• Strong analytical skills: I enjoy breaking down complex problems into manageable parts, as demonstrated in a project where I optimized a database query, reducing load time by 30%.

• Adaptability: I quickly learn new technologies and frameworks, such as when I transitioned from Java to Python for a projec...read more

I left my last job to seek new challenges and opportunities for growth in embedded systems development.

• I wanted to work on more complex projects that align with my career goals.

• The company was restructuring, and I felt it was a good time to explore new opportunities.

• I was looking for a role that offered more collaboration with cross-functional teams.

• I aimed to enhance my skills in newer technologies, such as IoT a...read more

AWS Cloud is a comprehensive cloud computing platform, while EC2 is a scalable virtual server service within AWS.

• AWS (Amazon Web Services) provides a wide range of cloud services including computing, storage, and databases.

• EC2 (Elastic Compute Cloud) allows users to rent virtual servers to run applications and manage workloads.

• EC2 instances can be launched in various sizes and configurations to meet different perf...read more

A 360-degree feedback system gathers performance feedback from multiple sources to provide a comprehensive view of an employee's performance.

• Involves feedback from peers, subordinates, supervisors, and sometimes clients.

• Helps identify strengths and areas for improvement from various perspectives.

• Example: A manager receives feedback from their team, other managers, and clients to assess leadership skills.

• Encourages...read more

Generics allow types to be parameters when defining classes, interfaces, and methods, promoting code reusability and type safety.

• Generics enable the creation of classes and methods that operate on types specified by the user.

• Example: A generic class 'Box<T>' can hold any type of object, like 'Box<Integer>' or 'Box<String>'.

• They help in reducing code duplication by allowing the same code to work w...read more