Roche Diagnostics Technical Engineer Interview Questions and Answers

Q1. What is Spring Boot and Various annotations used inside
Ans. 
Spring Boot is a framework for building standalone, production-grade Spring-based applications.
• Spring Boot provides a simpler and faster way to set up, configure, and run both web and non-web applications.

• Annotations used in Spring Boot include @SpringBootApplication, @RestController, @RequestMapping, @Autowired, and @ComponentScan.

• These annotations help with configuration, dependency injection, and mapping HTTP reques
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Q2. About React Basics .
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Q1. Similar Questions as above and Some Design related questions
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Basics of java and aome advance level java and also wotk on some data structure . In case you are expirenced be clear with your projects. Be prepared for the manegerial round also .

Basic programms like reversal of string.

Q1. Manegerial round along with system designing some behaviourial questions were also there System design questions
Ans. Practice concepts like indexing and pratitioning ,queations may be asked abt it
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Q2. Knowledge of azure and power bi is additional
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Q1. How do you find the code performance issue in the code deployed in production?
Ans. 
To find code performance issues in production, use monitoring tools and profiling techniques.
• Use monitoring tools like New Relic, AppDynamics, or Datadog to track performance metrics and identify bottlenecks.

• Use profiling techniques like CPU profiling, memory profiling, and network profiling to pinpoint specific areas of the code that are causing performance issues.

• Analyze logs and error messages to identify patterns a...read more
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Q2. What is asynchronous programming
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Asynchronous programming is a programming paradigm that allows multiple tasks to run concurrently without blocking each other.
• Asynchronous programming is used to improve the performance of applications that require a lot of I/O operations.

• It involves the use of callbacks, promises, and async/await keywords in JavaScript.

• Asynchronous programming can be used in both front-end and back-end development.

• Examples of asynchro...read more
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Q3. Write a program to change background after every 0.5 sec interval to orange,white,green on button click in Angular?
Ans. 
Program to change background color on button click in Angular
• Create a button in Angular template

• Add click event listener to the button

• Use setInterval() function to change background color after every 0.5 sec

• Use ngStyle directive to change background color dynamically
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Q4. How to load a component only after 3 of my services are loaded?
Ans. 
Use Angular's 'resolve' property to load component after services are loaded.
• Create a resolver service that waits for all three services to complete before resolving.

• Add the resolver service to the 'resolve' property of the component's route.

• Access the resolved data in the component using the ActivatedRoute service.

• Example: { path: 'my-component', component: MyComponent, resolve: { data: MyResolverService } }
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Q5. What is difference between iquerable and ienumrable
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IQueryable is for querying data from a source that implements IQueryable interface while IEnumerable is for iterating over a collection of data.
• IQueryable is used for deferred execution while IEnumerable is used for immediate execution.

• IQueryable is used for querying data from a remote data source while IEnumerable is used for querying data from an in-memory collection.

• IQueryable is more efficient for large datasets as...read more
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Q6. When you go with entity framework and ado.net
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Entity Framework is an ORM while ADO.NET is a data access technology.
• Entity Framework is easier to use and provides more abstraction than ADO.NET.

• ADO.NET is faster and more flexible than Entity Framework.

• Use Entity Framework for simple CRUD operations and ADO.NET for complex queries and performance-critical applications.
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2 coding questions and 10 mcqs

Q1. Sorting algorithms and oops concept in details.
Ans. 
Sorting algorithms and OOPs concepts
• Sorting algorithms are used to arrange data in a specific order.

• OOPs concepts provide a way to structure and organize code using classes and objects.

• Examples of sorting algorithms include bubble sort, insertion sort, and quicksort.

• OOPs concepts include encapsulation, inheritance, and polymorphism.
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Q1. Introduction and why you want to join the organization.
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Q1. First Technical Interview: All the C# basic and OOP's questions with written examples 1. Boxing and unboxing 2. Abstraction 3. Polymorphism 4. Delegate 5. Generic 6. Interface Logical question 1. Memory ...read more
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Q2. Second Technical Interview: C# based interview: 1. Ask to make reverse pyramid design pattern. 2. Factorial 3. A lot of questions on Interface with example of my current project. Why we use interface, and ...read more
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Q1. Explain end to end automation cycle
Ans. 
End to end automation cycle involves automating the entire software development process from planning to deployment.
• The cycle starts with requirements gathering and planning

• Next, the code is developed and tested using automation tools

• Continuous integration and delivery are used to deploy the code to production

• Monitoring and feedback are used to improve the process

• Examples of automation tools include Jenkins, Selenium,
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Q1. Why do you want to join this company.
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Q1. Wpf C# concept and sone codes for binding
Ans. 
WPF C# is a framework for building desktop applications. Binding is a way to connect UI elements to data sources.
• WPF stands for Windows Presentation Foundation

• C# is the programming language used for WPF development

• Binding allows for automatic updates of UI elements when data changes

• Example code for binding:

• DataContext is used to set the data source for binding
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Q1. Previous project and managerial rout
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Q1. Salary expectations
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