Imriel Senior Software Engineer Interview Questions, Process, and Tips

Q1. Difference between Interface and Abstraction
Ans. 
Interface defines a contract for a class to implement while Abstraction hides the implementation details.
• Interface is a blueprint of a class that defines what methods a class must implement.

• Abstraction is a concept where only relevant information is shown and irrelevant details are hidden.

• Interfaces can have multiple inheritance while Abstraction can be achieved through abstract classes or interfaces.

• Example: Interface...read more
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Q2. How data flows from frontend to backend in Asp.net core
Ans. 
Data flows from frontend to backend in Asp.net core through HTTP requests and responses.
• Frontend sends HTTP requests to backend API endpoints

• Backend processes the requests and sends back HTTP responses

• Data can be passed in the request body, query parameters, or headers

• Example: Frontend sends a POST request to create a new user, backend receives the request, processes it, and sends a success response
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Q3. Functions vs Stored Procedure
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Functions are reusable code blocks that return a value, while stored procedures are precompiled SQL statements that can perform multiple operations.
• Functions return a value, while stored procedures do not necessarily return a value.

• Functions can be used in SQL queries, while stored procedures are called using EXECUTE statement.

• Functions are easier to test and debug compared to stored procedures.

• Stored procedures can co...read more
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Q1. Technical discussion over how the microservices communicate internally.
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Q2. Immutable class implementation
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Q3. Singleton class implementation
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Q1. What is Node.js event loop and how its work?
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Node.js event loop is a mechanism that allows Node.js to perform non-blocking I/O operations asynchronously.
• Event loop is responsible for handling asynchronous operations in Node.js.

• It allows Node.js to perform multiple operations simultaneously without blocking the execution.

• Event loop continuously checks the event queue for new events and executes them in a non-blocking manner.

• Callbacks are used to handle the complet
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Q2. DBMS questions like joins
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- Basic data structures questions.
- Node.js specific questions.

Q1. Basic managerial questions
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Q1. What is angular
Ans. 
Angular is a popular open-source front-end web application framework developed by Google.
• Angular is used for building dynamic web applications.

• It allows for the creation of single-page applications.

• Angular uses TypeScript for building applications.

• It provides features like data binding, dependency injection, and routing.

• Angular has a large community and ecosystem of libraries and tools.

• Examples: AngularJS, Angular 2, A
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Q2. What is routing
Ans. 
Routing is the process of selecting a path for network traffic to travel from source to destination.
• Routing involves determining the best path for data packets to travel through a network

• Routers use routing tables to make decisions on where to send data packets

• Routing protocols like OSPF and BGP help routers communicate and update routing information
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Q3. How many types of forms
Ans. 
There are various types of forms, such as physical forms, digital forms, legal forms, etc.
• Physical forms: Paper-based forms that are filled out by hand.

• Digital forms: Electronic forms that are filled out online or through software.

• Legal forms: Forms used for legal purposes, such as contracts or agreements.
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Q4. Lazy loading in angular
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Lazy loading in Angular is a technique used to load modules only when they are needed, improving performance by reducing initial load time.
• Lazy loading helps in reducing the initial bundle size of the application by loading modules asynchronously.

• It improves the performance of the application by only loading the modules that are required at a particular time.

• Lazy loading is achieved by using the loadChildren property i...read more
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Q5. Rx jx operator in angular
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The rxjs operator in Angular is used for reactive programming and handling asynchronous data streams.
• RxJS operators are functions that build on the observables foundation to enable sophisticated manipulation of asynchronous data streams.

• Operators can be used to filter, transform, combine, and more on observables.

• Example: map(), filter(), mergeMap(), switchMap()
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Q6. Testing frameworks how to works
Ans. 
Testing frameworks are tools that help automate the process of testing software applications.
• Testing frameworks provide a structure for writing and executing test cases.

• They offer features like test data management, test case organization, and reporting.

• Examples include JUnit for Java, NUnit for .NET, and pytest for Python.
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Q7. How to load a angular application
Ans. 
To load an Angular application, you can use the Angular CLI command 'ng serve' to start a development server.
• Use the Angular CLI command 'ng serve' to start a development server

• Navigate to the project directory in the terminal and run 'ng serve'

• Open a web browser and go to 'http://localhost:4200/' to view the application
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Q1. Explain some Design patterns
Ans. 
Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating flexible, maintainable, and scalable software.

• Some common design patterns include Singleton, Factory, Observer, Strategy, and Decorator.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object...read more
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Q2. Explain Delegates , async/ await
Ans. 
Delegates are type-safe function pointers in C# used for implementing callbacks. async/await is used for asynchronous programming in C#.
• Delegates in C# are similar to function pointers in C or C++. They allow methods to be passed as parameters to other methods.

• Async/await in C# is used for asynchronous programming, allowing methods to run asynchronously without blocking the main thread.

• Delegates can be used with async/
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Q1. What is a interceptor
Ans. 
An interceptor is a design pattern commonly used in software development to capture and manipulate requests and responses.
• Interceptors can be used for logging, authentication, authorization, caching, error handling, etc.

• In Angular, interceptors can be used to modify HTTP requests before they are sent and responses before they are received.

• In Spring framework, interceptors can be used to intercept client requests and se
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Q2. What is Authentication, how to achieve it
Ans. 
Authentication is the process of verifying the identity of a user or system.
• Authentication involves confirming the identity of a user through credentials such as passwords, biometrics, or security tokens.

• Common methods of authentication include single-factor authentication (e.g. password) and multi-factor authentication (e.g. password + SMS code).

• Authentication can be achieved through protocols like OAuth, OpenID, SAML...read more
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Q1. Explain about the services in android
Ans. 
Services in Android are components that run in the background to perform long-running operations.
• Services can be used to play music in the background while the user interacts with other apps.

• They can also be used to download files from the internet even when the app is not in the foreground.

• Services can run indefinitely or be scheduled to run at specific times.

• They can communicate with other components using broadcasts
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Q2. MVVM architecture
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One take home assignment

Q1. Questions on JS basics
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Q2. Angular deep dive
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Q1. General discussion with hiring manager
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MCQ type questions related to Front end, Back end and involved few coding questions in the MCQ format

Q1. How would you debug an application to solve a production defect that was raised?
Ans. 
I would start by reproducing the issue, analyzing logs, checking code changes, and using debugging tools.
• Reproduce the issue to understand the exact scenario where the defect occurs.

• Analyze logs to identify any error messages or warnings related to the defect.

• Check recent code changes to see if any recent modifications could have caused the defect.

• Use debugging tools like breakpoints, logging, and profiling to trace th...read more
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Q2. What would you do if a defect can't be fixed?
Ans. 
I would analyze the impact of the defect and explore alternative solutions.
• Analyze the impact of the defect on the overall system functionality

• Discuss with the team to brainstorm alternative solutions

• Consider workarounds or temporary fixes while a permanent solution is being developed
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Q3. How would you implement breaking changes in the application?
Ans. 
Breaking changes can be implemented by following a structured process to minimize impact on users.
• Communicate the changes to stakeholders in advance

• Provide detailed documentation on the changes and how to adapt to them

• Implement versioning to allow users to choose when to adopt the changes

• Use feature flags to gradually roll out the changes and monitor impact

• Run thorough testing to ensure the changes do not introduce new
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