10+ ROITech Consulting Pvt Ltd. Interview Questions and Answers

Filters are used to manipulate incoming and outgoing requests. Custom filters can be added and middleware can be configured to handle them.

• Filters are used to modify or validate incoming and outgoing requests in ASP.NET Core.

• Custom filters can be added by creating a class that implements IFilterMetadata interface.

• Middleware can be configured to handle filters using the UseFilter extension method.

• Filters can be used for authentication, caching, logging, and more.

• Filters can be...read more

Globalization is the process of designing and developing applications that can be used in multiple languages and cultures.

• Use resource files to store text in different languages

• Use Unicode encoding to support different character sets

• Use culture-specific formatting for dates, times, and numbers

• Test the application with different languages and cultures to ensure proper functionality

Automated jobs can be created using scheduling tools or by writing custom code to run at specific intervals.

• Use scheduling tools like Windows Task Scheduler or Cron to run jobs at specific intervals

• Write custom code using libraries like Quartz.NET or Hangfire to schedule and run jobs

• Jobs can perform tasks like data backups, sending emails, or running reports

EF Core supports transactions using the DbContext class.

• Create a new instance of DbContextTransaction using BeginTransaction method of DbContext.

• Perform database operations within the transaction using SaveChanges method of DbContext.

• Commit the transaction using Commit method of DbContextTransaction or rollback using Rollback method.

• Example: using (var transaction = context.Database.BeginTransaction()) { ... }

Use try-catch block to handle exceptions in JavaScript.

• Wrap the code that may throw an exception inside a try block.

• Catch the exception using catch block and handle it appropriately.

• Use finally block to execute code that should run regardless of whether an exception was thrown or not.

• Throw custom exceptions using throw keyword.

• Use console.log() to log the error message for debugging purposes.

Layout defines the structure of a web page while Area is a way to organize related functionality in an ASP.NET MVC application.

• Layout specifies the position of elements on a web page.

• Area is a logical grouping of controllers, views, and models in an MVC application.

• Layout can be shared across multiple pages while Area is specific to a particular section of the application.

• Layout can be defined using HTML, CSS, and JavaScript while Area is defined using the ASP.NET MVC framewo...read more

I use a CRM system to track follow-ups and cold calls. I prioritize follow-ups based on their urgency and importance.

• I use a CRM system to keep track of all my follow-ups and cold calls.

• I prioritize my follow-ups based on their urgency and importance.

• I set reminders for myself to follow up with clients and prospects.

• I make sure to document all my interactions with clients and prospects in the CRM system.

• I review my progress regularly to ensure I am meeting my goals and making...read more

Code to check if a string is a palindrome or not

• Convert the string to lowercase to ignore case sensitivity

• Use two pointers, one starting from the beginning and the other from the end of the string

• Compare the characters at the two pointers and move them towards the center until they meet or cross each other

• If all the characters match, the string is a palindrome

• If any characters don't match, the string is not a palindrome

There are various sources to find leads such as social media, industry events, referrals, cold calling, and online directories.

• Social media platforms like LinkedIn, Twitter, and Facebook can be used to find potential leads.

• Attending industry events and conferences can help in networking and finding potential clients.

• Referrals from existing clients or business partners can also be a good source of leads.

• Cold calling or emailing can be effective in reaching out to potential cli...read more

Active transformation changes the number of rows in the data flow, while passive transformation does not.

• Active transformation changes the data flow by adding, deleting, or modifying rows.

• Passive transformation does not change the data flow, but may change the data within the flow.

• Examples of active transformations include Filter, Router, and Update Strategy.

• Examples of passive transformations include Expression, Aggregator, and Joiner.

My monthly/quarterly targets are based on the company's overall goals and my individual responsibilities.

• My targets are aligned with the company's strategic plan

• I set specific, measurable, achievable, relevant, and time-bound (SMART) goals

• I regularly review and adjust my targets based on progress and changes in the business environment

• Examples of my targets include increasing revenue, expanding the customer base, and improving customer satisfaction

• I collaborate with my team a...read more

Lookup and Joiner are two types of transformations used in ETL process.

• Lookup transformation is used to look up data from a source based on a key and return the corresponding data.

• Joiner transformation is used to join data from two or more sources based on a common key.

• Lookup transformation can be used for both connected and unconnected lookup.

• Joiner transformation can be used for inner, outer, left outer, and right outer joins.

• Lookup transformation can improve performance by...read more

I apply a variety of testing techniques including manual testing, automated testing, regression testing, performance testing, and exploratory testing.

• Manual testing: Testing the application manually to identify bugs and issues.

• Automated testing: Writing scripts to automate testing processes for efficiency.

• Regression testing: Ensuring that new code changes do not negatively impact existing functionality.

• Performance testing: Testing the application's performance under various c...read more

SOLID is a set of principles that guide software design to make it more maintainable, scalable, and flexible.

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open-Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Subtypes must be substitutable for their base types.

• I - Interface Segregation Principle: Clients should not be forced to depend on interfaces they do n...read more

A critical bug I found was a memory leak in the application causing crashes and performance issues.

• Identified memory leak in code causing application crashes

• Implemented proper memory management techniques to resolve the issue

• Tested the application thoroughly to ensure no more memory leaks were present