400+ Senior Test Engineer Interview Questions and Answers

Answering questions related to Selenium automation framework and its components.

• Implemented Page Object Model (POM) framework with TestNG and Maven

• POM components: Page classes, Test classes, Utility classes, Test data files

• Dynamic web element handled using Explicit and Implicit Waits

• Hidden element handled using JavaScriptExecutor

• File upload handled using sendKeys() method

• HashMap used to store test data and retrieve it in test methods

• Screenshots taken using TakesScreenshot int...read more

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

I would escalate the issue to higher management and explain the risks associated with signing off on a faulty feature.

• Explain the potential impact of releasing a feature with known bugs on customer satisfaction and company reputation.

• Provide data and evidence from testing to support your concerns.

• Propose alternative solutions such as delaying the release until the issues are fixed or allocating more resources to address the bugs.

• Highlight the importance of maintaining quality...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.

Answering questions related to Selenium and Java for Senior Test Engineer position.

• findelement returns the first matching element on the page while find elements returns a list of all matching elements

• Some exceptions in Java and Selenium are NullPointerException, NoSuchElementException, TimeoutException, ElementNotVisibleException

• Object-Oriented Programming (OOP) concepts include inheritance, encapsulation, abstraction, and polymorphism

BGP confederation is a method to reduce the number of iBGP peers. BGP state machines are used to maintain BGP sessions. NSSA is a type of OSPF area. AS-PATH in BGP confederation is modified.

• BGP confederation is used to split a large AS into smaller sub-ASes to reduce the number of iBGP peers.

• BGP state machines are used to maintain BGP sessions and exchange routing information.

• NSSA (Not-So-Stubby Area) is a type of OSPF area that allows external routes to be imported into the ...read more

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

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

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

TestNg is a testing framework used to run failed test cases and manage test suites.

• TestNg allows rerunning of failed test cases using the 'rerun-failed.xml' file.

• It provides annotations to manage test execution flow and grouping of test cases.

• TestNg generates detailed test reports and supports parallel test execution.

• It also provides data-driven testing and integration with other tools like Selenium and JUnit.

Different types of schemas and dimensions, self join queries and functions in testing.

• Different types of schemas include star schema, snowflake schema, and fact constellation schema.

• Star schema is used for simple queries and is easy to understand.

• Snowflake schema is used for complex queries and is normalized.

• Fact constellation schema is used for complex queries and has multiple fact tables.

• Self join queries are used to join a table to itself.

• Functions are used to perform spec...read more

Priority and severity are terms used in software testing to indicate the importance and impact of a defect.

• Priority refers to the order in which defects should be fixed based on their impact on the system and business requirements.

• Severity refers to the degree of impact a defect has on the system's functionality and the user's ability to use it.

• For example, a defect that causes the system to crash would have high severity, while a spelling mistake in a non-critical area would...read more

Dealing with dynamic drop down in Selenium/Appium

• Identify the parent element of the drop down

• Use findElements() method to get all the child elements

• Iterate through the child elements and select the desired option

• Use wait() method to handle dynamic loading of options

• Use Select class for handling drop downs with select tag

• For non-select tag drop downs, use click() method to open the drop down and select the option

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

Commands for displaying list of users, disk space, searching, file disk space, and scheduling tasks.

• List of users: 'cat /etc/passwd'

• Disk space: 'df -h'

• Searching: 'grep'

• File disk space: 'du -sh '

• Scheduling tasks: 'cron'

OOP is a programming paradigm based on the concept of objects, which can contain data and code to manipulate that data.

• Encapsulation: bundling data and methods that operate on the data into a single unit (object)

• Inheritance: allows a class to inherit properties and behavior from another class

• Polymorphism: ability for objects to be treated as instances of their parent class or their own class

• Abstraction: hiding the complex implementation details and showing only the necessary ...read more

Jenkins jobs can be scheduled using the Build Triggers option. The flow includes SCM polling, build, and post-build actions.

• Go to the job configuration page and select Build Triggers

• Choose the appropriate trigger option such as Poll SCM or Build periodically

• Configure the trigger settings such as the schedule or polling interval

• Add build steps and post-build actions as required

• Save the job configuration

• Jenkins will automatically trigger the job based on the configured schedule...read more

Query to find salary more than 10000 and dept belongs to finance

• Use SELECT statement with WHERE clause

• Specify salary greater than 10000 and department as finance

• Use AND operator to combine conditions

Test case for integration scenario of API testing with main status codes in responses

• Test case: Verify that the API response includes the expected data fields and values after integrating with another API

• Main status codes: 200 (OK), 201 (Created), 400 (Bad Request), 401 (Unauthorized), 404 (Not Found), 500 (Internal Server Error)

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

Smoke testing is a preliminary test to check if the software is stable enough for further testing. Sanity testing is a subset of regression testing to check if the bugs have been fixed.

• Smoke testing is done to check if the critical functionalities of the software are working fine.

• Sanity testing is done to check if the bugs have been fixed and the software is ready for further testing.

• Smoke testing is done before sanity testing.

• Smoke testing is a high-level testing while sanit...read more

Answering questions on testing domain, API testing, and OOP concepts.

• Experience in testing domain includes knowledge of various testing techniques and tools.

• API testing involves testing the functionality of APIs and their integration with other systems.

• PUT and POST methods are both used for sending data to a server, but PUT is used for updating existing data while POST is used for creating new data.

• In Java, extends is used for inheritance of classes while implements is used f...read more

Verification and validation are two important processes in software testing. Test cases are specific conditions or scenarios to test the functionality of a system. Exploratory testing involves simultaneous learning, test design, and execution.

• Verification ensures that the software meets the specifications and requirements, while validation ensures that the software meets the customer's needs.

• A test case is a set of conditions or variables under which a tester will determine w...read more

Testing applications can face challenges related to compatibility, security, performance, and user experience.

• Compatibility issues with different devices, operating systems, and browsers

• Ensuring security measures are in place to protect user data

• Performance testing to ensure the application can handle high traffic and usage

• Testing for user experience and usability to ensure the application is intuitive and easy to use

• Regression testing to ensure new updates or changes do not ...read more

I have used Java Collections such as ArrayList, HashMap, and HashSet in my project.

• ArrayList: Used to store and manipulate a list of elements.

• HashMap: Used to store key-value pairs for efficient retrieval.

• HashSet: Used to store unique elements without duplicates.

Difference between find element and find elements, and how to handle dropdown and mouse actions in Selenium.

• findElement() returns the first matching element on the page, while findElements() returns a list of all matching elements

• To handle dropdowns, use the Select class and its methods like selectByVisibleText() or selectByValue()

• To handle mouse actions, use the Actions class and its methods like moveToElement() or clickAndHold()

• It's important to use explicit waits to ensure...read more

Answering questions related to Senior Test Engineer interview

• Different keywords in Gherkin include Given, When, Then, And, But

• Example script for scenario: Given I am on the login page, When I enter valid credentials, Then I should be redirected to the dashboard

• Backend testing involves testing the server-side components of an application

• Java basic questions may include concepts like OOPs, exception handling, and data structures

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

final is a keyword used to declare constants, finalize is a method used for cleanup operations, and finally is a block used for exception handling.

• final is a keyword in Java used to declare constants that cannot be changed, like final int x = 10;

• finalize is a method in Java used for cleanup operations before an object is garbage collected, like protected void finalize() {...}

• finally is a block in Java used for exception handling to ensure a piece of code is always executed, l...read more