20+ ABB Interview Questions and Answers

Program to find occurrence of each letter in string

• Iterate through each character in the string

• Create an array of size 26 to store the count of each letter

• For each character, increment the count in the corresponding index of the array

• Convert the array to a JSON object with letters as keys and counts as values

Microservices are a software architecture pattern where applications are broken down into small, independent services.

• Microservices can be scaled up or down by adding or removing instances of the service as needed.

• Docker is a containerization platform that allows for easy deployment and management of microservices.

• Microservices communicate with each other through APIs or message queues.

• Scaling microservices requires careful consideration of the service's dependencies and reso...read more

Datatable is a single table of data while dataset is a collection of tables. MVC is a software design pattern. Joins are used to combine data from multiple tables.

• Datatable is a single table of data in memory, while dataset is a collection of datatables.

• MVC stands for Model-View-Controller, a software design pattern that separates the application into three main components.

• Types of joins include inner join, outer join, left join, and right join, used to combine data from mult...read more

Insight Advisor in Power PI is a feature that provides AI-powered suggestions and recommendations to help users analyze data more effectively.

• AI-powered feature in Power PI

• Provides suggestions and recommendations for data analysis

• Helps users make more informed decisions

• Improves data analysis efficiency

Append in Power Query Editor is a function that combines multiple tables or queries into one.

• Append is used to stack tables on top of each other or combine them side by side.

• It is useful for merging data from different sources or combining data from multiple queries.

• Append can be done in a new query or added to an existing query.

• Example: Appending two tables with similar columns to create a single table with all the data.

Power BI works on the VertiPaq engine.

• Power BI uses the VertiPaq engine for data storage and querying.

• VertiPaq is an in-memory columnar storage engine developed by Microsoft.

• VertiPaq is also used in other Microsoft products like SQL Server Analysis Services.

Terraform and CloudFormation are infrastructure as code tools, with Terraform being more flexible and CloudFormation being AWS-specific.

• Terraform is a tool for building, changing, and versioning infrastructure safely and efficiently.

• CloudFormation is a service that helps you model and set up your Amazon Web Services resources.

• Terraform supports multiple cloud providers and on-premises infrastructure, while CloudFormation is specific to AWS.

• Terraform uses a declarative languag...read more

RLS stands for Row Level Security. It is a feature that restricts access to rows in a database based on the user's identity.

• RLS is a security feature in databases that allows users to only access specific rows of data based on their identity.

• There are two types of RLS: Static RLS and Dynamic RLS.

• Static RLS involves defining access restrictions based on static conditions, such as user roles or groups.

• Dynamic RLS involves defining access restrictions based on dynamic conditions...read more

Kafka is a distributed streaming platform used for building real-time data pipelines and streaming applications.

• Kafka is used for real-time data processing and streaming applications

• It is a distributed system that runs on a cluster of machines

• ZooKeeper is used to manage and coordinate Kafka brokers

• ZooKeeper is responsible for maintaining configuration information, naming, providing distributed synchronization, and group services

AWS (Amazon Web Services) is a cloud computing platform that offers a wide range of services for various computing needs.

• AWS is a cloud computing platform provided by Amazon.

• Some familiar AWS services include EC2 (Elastic Compute Cloud), S3 (Simple Storage Service), RDS (Relational Database Service), and Lambda.

• EC2 allows users to rent virtual servers to run their applications.

• S3 provides scalable storage for files and data.

• RDS offers managed relational databases in the cloud...read more

Common tools and frameworks used in QE Automation include Selenium, Appium, JUnit, TestNG, Cucumber, and Jenkins.

• Selenium - widely used for web application testing

• Appium - used for mobile application testing

• JUnit and TestNG - popular Java testing frameworks

• Cucumber - for behavior-driven development

• Jenkins - for continuous integration and continuous delivery

To build a project from scratch, start by defining requirements, creating a plan, setting up the development environment, writing code, testing, and deploying.

• Define project requirements and goals

• Create a project plan outlining tasks and timelines

• Set up the development environment with necessary tools and frameworks

• Write code following best practices and coding standards

• Test the project thoroughly to ensure functionality and quality

• Deploy the project to production environment

Testing types refer to different approaches and techniques used to ensure the quality of software products.

• Functional Testing - testing the functionality of the software against the requirements.

• Non-Functional Testing - testing aspects like performance, usability, security, etc.

• Regression Testing - retesting the software after changes to ensure existing functionalities are not affected.

• Integration Testing - testing the interaction between different components/modules of the s...read more

Integration development using middleware tools involves connecting different systems and applications to enable seamless data flow.

• Middleware tools act as a bridge between different systems, allowing them to communicate and share data.

• Common middleware tools include MuleSoft, IBM Integration Bus, Apache Kafka, and Microsoft BizTalk.

• Integration development using middleware tools requires knowledge of APIs, message queues, and data transformation techniques.

• Middleware tools hel...read more

SDLC in Middleware Integration Platforms involves planning, designing, implementing, testing, and deploying integration solutions.

• SDLC stages include planning, designing, implementing, testing, and deploying integration solutions

• Each stage involves specific activities such as requirement gathering, architecture design, coding, testing, and deployment

• Examples of middleware integration platforms include MuleSoft, IBM Integration Bus, and Apache Camel

Joins are used in databases to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables based on a related column between them

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right ta...read more

TRM can be found by analyzing the test results and comparing them to the reference range.

• Review the test results and identify the specific values for the parameters being tested.

• Consult the reference range provided by the laboratory or medical guidelines.

• Compare the test results to the reference range to determine if they fall within normal limits.

• If the test results are outside the reference range, further investigation may be needed to determine the cause.

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• Regression testing is performed after code changes to verify that the existing functionality still works correctly.

• It helps in identifying any defects introduced by new code changes.

• Automated testing tools are often used for regression testing to save time and effort.

• Regression testing can be done at various levels of testing...read more

I switched to pursue new challenges and opportunities for growth.

• Desire for new challenges

• Opportunities for growth

• Seeking a change in career path