40+ Staqo World Interview Questions and Answers

Defects found in production should be immediately reported and a plan should be made to fix the issue.

• Report the defect to the development team and stakeholders

• Analyze the impact of the defect on the system and users

• Prioritize the defect based on severity and impact

• Create a plan to fix the defect and test the fix thoroughly

• Deploy the fix to production after testing

• Monitor the system to ensure the defect has been resolved

Incremental load is performed by identifying new data and adding it to the existing data set.

• Identify new data based on a timestamp or unique identifier

• Extract new data from source system

• Transform and map new data to match existing data set

• Load new data into target system

• Verify data integrity and consistency

Regression is testing to ensure changes do not affect existing functionality. Retesting is testing to ensure defects have been fixed.

• Regression testing is done to ensure that changes made to the software do not affect the existing functionality.

• Retesting is done to ensure that defects found during testing have been fixed.

• Regression testing is done after every change to the software.

• Retesting is done after a defect has been fixed.

• Regression testing is automated to save time an...read more

A circular cake can be cut into 8 equal pieces with 3 cuts only by cutting the cake into quarters and then making a diagonal cut.

• Cut the cake into quarters with two cuts, creating four equal pieces.

• Make a diagonal cut from the center of the cake to the edge, dividing each quarter into two equal pieces.

• This will result in eight equal pieces of cake with only three cuts.

Regression testing is performed to ensure that changes or updates to a software application do not introduce new defects or impact existing functionality.

• Regression testing is done after making changes to the software application.

• It helps in identifying any unintended side effects of the changes.

• It ensures that previously working features are not broken due to the changes.

• Regression testing is typically performed during the testing phase of the software development lifecycle....read more

Fact table contains quantitative data while dimension table contains descriptive data.

• Fact table stores data related to business processes and events

• Dimension table stores descriptive information about the data in the fact table

• Fact table is usually larger than dimension table

• Fact table is connected to dimension table through foreign keys

• Example: Sales fact table and product dimension table

A join is a SQL operation that combines rows from two or more tables based on a related column between them.

• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all rows from the left table and matching rows from the right table.

• Right join returns all rows from the right table and matching rows from the left table.

• Full outer join returns all rows from both tables, with NULL v...read more

Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity. Denormalization is the opposite process.

• Normalization involves breaking down a table into smaller tables and establishing relationships between them.

• Denormalization involves combining tables to improve performance by reducing the number of joins required.

• Normalization helps to prevent data inconsistencies and anomalies.

• Denormalization can improve query performance bu...read more

Integration testing is the process of testing the interaction between different components or modules of a software system.

• It involves testing the interfaces between modules

• It ensures that the modules work together as expected

• It can be done manually or with automated tools

• Examples include testing the integration between a database and a web application, or between different microservices in a distributed system

Incremental and full load are two methods of data extraction and loading.

• Incremental load only extracts and loads new or updated data since the last load.

• Full load extracts and loads all data every time.

• Incremental load is faster and more efficient than full load.

• Full load is useful when there are major changes in the data source.

• Example: Incremental load extracts and loads only new customer data since the last load.

• Example: Full load extracts and loads all customer data ever...read more

The interview questions cover topics related to healthcare claim adjudication, database schemas, healthcare programs, OLTP vs OLAP, DWHS, and dimension tables.

• Claim adjudication process involves reviewing and processing insurance claims to determine payment or denial.

• Star schema is a type of database schema where a central fact table is connected to multiple dimension tables, while snowflake schema normalizes dimension tables by splitting them into sub-dimensions.

• Medicare is ...read more

Constraints are limitations or restrictions that are put on a system or process.

• Constraints can be physical, such as the size or weight of a product

• Constraints can also be related to time, budget, or resources

• Constraints can impact the design, development, and testing of a system

• Examples of constraints include regulatory requirements, customer specifications, and technical limitations

Transformation refers to the process of changing or converting something from one form to another.

• Transformation can occur in various fields such as technology, business, and personal development.

• Examples of transformation include digital transformation, organizational transformation, and personal transformation.

• Transformation often involves a significant change in mindset, processes, and systems.

• Successful transformation requires careful planning, communication, and executio...read more

n-1 in agile refers to the number of testers required to test a feature, where n is the total number of testers.

• n-1 is a formula used to determine the number of testers needed to test a feature in agile development.

• It means that one tester less than the total number of testers is required to test a feature.

• For example, if there are 5 testers in a team, then n-1 would mean that 4 testers are required to test a feature.

• This approach ensures that there is enough coverage and col...read more

A bug is a coding error that causes unexpected behavior. A defect is a deviation from the expected behavior.

• A bug is a mistake made by a programmer while writing code.

• A defect is a problem with the software that causes it to behave differently than expected.

• Bugs can be fixed by correcting the code, while defects require a deeper analysis of the software.

• Examples of bugs include syntax errors, logical errors, and runtime errors.

• Examples of defects include incorrect calculation...read more

SQL query to find the 3rd highest salary.

• Use the ORDER BY clause to sort the salaries in descending order.

• Use the LIMIT clause to limit the result to the third row.

• Use a subquery to exclude the top two salaries.

• Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 2,1;

Yes, I have knowledge on monitoring tools.

• I have experience with tools like Nagios, Zabbix, and Prometheus.

• I am familiar with setting up alerts and notifications based on specific metrics.

• I have worked with log monitoring tools like ELK stack and Splunk.

• I have also used APM tools like New Relic and AppDynamics for application performance monitoring.

Validations are checks performed on data to ensure it meets certain criteria or requirements.

• Validations are done to ensure data accuracy, completeness, and consistency.

• They can be performed on user input, system output, or data stored in a database.

• Examples include checking for required fields, data type, length, format, and range.

• Validations can also be used to prevent security vulnerabilities such as SQL injection or cross-site scripting.

• Automated testing tools can be used...read more

Cucumber is a BDD (Behavior Driven Development) tool used for testing software.

• Cucumber uses Gherkin syntax to write test cases in a human-readable format

• It allows collaboration between developers, testers, and business stakeholders

• Cucumber supports multiple programming languages such as Java, Ruby, and Python

• It helps in automating acceptance tests and ensures that the software meets the requirements

• Cucumber can be integrated with other testing frameworks like Selenium and Ap...read more

Drop, truncate and delete are SQL commands used to remove data from a table.

• DROP command removes the entire table and its data

• TRUNCATE command removes all data from the table but keeps the table structure

• DELETE command removes specific rows from the table based on a condition

• DROP and TRUNCATE cannot be rolled back, while DELETE can be

• DROP and TRUNCATE are faster than DELETE

A surrogate key is a unique identifier assigned to a record in a database when a natural primary key is not available or practical to use.

• Surrogate keys are often used in data warehousing and ETL processes.

• They can be generated using a variety of methods, such as auto-incrementing integers or UUIDs.

• Surrogate keys can improve performance and simplify database design.

• Example: Using a surrogate key instead of a customer's name as the primary key in a customer table.

• Example: Usin...read more

To right-click in Java, use the Robot class to simulate a mouse click event.

• Create an instance of the Robot class

• Move the mouse to the desired location using the mouseMove() method

• Simulate a right-click event using the mousePress() and mouseRelease() methods with the InputEvent.BUTTON3_MASK parameter

A pattern SQL query is a query that follows a specific structure or format.

• Identify the pattern or structure required for the query

• Use appropriate SQL syntax to construct the query

• Test the query to ensure it returns the desired results

NFT in software testing stands for Non-Functional Testing, which focuses on the performance, usability, reliability, and other non-functional aspects of a software application.

• NFT includes testing aspects like performance testing, usability testing, reliability testing, scalability testing, and security testing.

• Performance testing involves evaluating the speed, responsiveness, and stability of the software under different load conditions.

• Usability testing focuses on the user-...read more

Wait types include implicit, explicit, and fluent. Handles refer to browser windows or tabs. findElement(s) locate web elements.

• Implicit wait waits for a certain amount of time before throwing an exception if the element is not found

• Explicit wait waits for a certain condition to be met before proceeding

• Fluent wait waits for a certain condition to be met and polls at regular intervals

• Handles are used to switch between browser windows or tabs

• findElement locates the first web el...read more

Cucumber is a BDD testing framework that allows tests to be written in plain English.

• Cucumber uses Gherkin syntax to write tests in a human-readable format

• Tests are defined in feature files and implemented in step definitions

• Cucumber supports multiple programming languages such as Java, Ruby, and JavaScript

• Cucumber integrates with other testing frameworks like Selenium and Appium

• Cucumber promotes collaboration between developers, testers, and business stakeholders

Mouse over point in Selenium is used to simulate hovering over an element on a web page.

• Mouse over point is used to trigger dropdown menus or tooltips that appear when hovering over an element.

• It can be achieved using Actions class in Selenium.

• Example: actions.moveToElement(element).perform();

A lambda function is an anonymous function that can have any number of parameters but can only have one expression.

• Lambda functions are used for creating small, throwaway functions.

• They are often used as arguments to higher-order functions.

• Lambda functions are concise and do not require a return statement.

• Example: lambda x: x*2 defines a lambda function that doubles the input.

I investigate the issue, identify the root cause, develop a solution, test it thoroughly, and implement the fix.

• Investigate the issue thoroughly to understand the root cause

• Develop a solution or workaround to address the issue

• Test the solution rigorously to ensure it resolves the problem

• Implement the fix carefully to prevent any further issues

• Communicate with stakeholders about the resolution

Reverse a string without using a function

• Iterate through the string from end to start and store each character in a new array

• Join the array of characters to form the reversed string

Test cases in Tosca are developed using a modular approach and can be automated or manual.

• Identify the test objective and requirements

• Create test cases using Tosca modules

• Automate or manually execute the test cases

• Report and track defects

• Update test cases as needed

Automation process in Salesforce involves using tools like Salesforce Automation, Process Builder, and Apex triggers to automate repetitive tasks and streamline workflows.

• Salesforce Automation allows users to create rules and triggers to automate tasks like sending emails, updating records, and creating tasks.

• Process Builder is a visual tool that allows users to automate business processes by creating workflows with point-and-click functionality.

• Apex triggers are code snippet...read more

Workflow is a declarative automation tool for automating standard processes, while Process Builder is a visual tool for automating business processes.

• Workflow is based on criteria and actions, while Process Builder uses a visual interface with point-and-click functionality.

• Workflow can only perform actions on the same object, while Process Builder can work across multiple objects.

• Workflow can only update fields on the same record, while Process Builder can update related reco...read more

Static keyword in Java is used for memory allocation at class level rather than object level.

• Static variables are shared among all instances of a class.

• Static methods can be called without creating an instance of the class.

• Static blocks are used to initialize static variables.

• Example: public static int count = 0;

SDLC is the process of developing software, STLC is the process of testing software, and Bug life cycle is the stages a bug goes through from discovery to resolution.

• SDLC (Software Development Life Cycle) involves planning, designing, coding, testing, and deployment of software.

• STLC (Software Testing Life Cycle) involves test planning, test design, test execution, and test closure.

• Bug life cycle includes stages like New, Assigned, Open, Fixed, Retest, Verified, and Closed.

• Exa...read more

In Selenium, clicking on elements can be done using the click() method.

• Locate the element using appropriate locator strategies

• Use the click() method to perform the click action

• Handle any exceptions that may occur during the click operation

Bug life cycle in agile methodologies involves identification, reporting, fixing, retesting, and closing bugs.

• Bugs are identified during testing or by stakeholders

• Bugs are reported in a bug tracking tool like Jira or Trello

• Developers fix the reported bugs

• Testers retest the fixed bugs to ensure they are resolved

• Once verified, bugs are closed

Salesforce is a cloud-based customer relationship management (CRM) platform that helps businesses manage their sales, customer service, marketing, and more.

• Cloud-based CRM platform

• Helps businesses manage sales, customer service, marketing, etc.

• Provides tools for automation, analytics, and integration

• Offers a wide range of apps and services for various business needs

Movement types of different scenarios refer to the various ways in which objects or individuals can move in a given situation.

• Walking - moving on foot

• Running - moving quickly on foot

• Crawling - moving on hands and knees

• Swimming - moving through water

• Flying - moving through the air

Code to check if a number is prime or not

• Iterate from 2 to square root of the number

• Check if the number is divisible by any number in the range

• If divisible, it is not a prime number

Performance testing is a type of testing to ensure software applications perform well under expected workload.

• Load testing: Testing the system's ability to handle a specific load.

• Stress testing: Testing the system's ability to handle beyond its expected load.

• Endurance testing: Testing the system's ability to handle a sustained load over time.

• Scalability testing: Testing the system's ability to scale up or down based on workload.

• Spike testing: Testing the system's ability to h...read more

Constructor in Java is a special type of method used to initialize objects.

• Constructors have the same name as the class they are in.

• They do not have a return type, not even void.

• They are called when an object of a class is created.

• Constructors can be overloaded, meaning a class can have multiple constructors with different parameters.