Merkle Interview Questions, Process, and Tips

Q1. Difference between find element and find element
Ans. 
find element is a method in Selenium used to locate a single web element on a webpage, while find elements is used to locate multiple web elements.
• find element returns a single web element based on the locator strategy provided

• find elements returns a list of web elements based on the locator strategy provided

• Example: driver.findElement(By.id("elementId")) vs driver.findElements(By.className("elementsClass"))
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Q2. Write a program for reverse string
Ans. 
Program to reverse a string using array of characters
• Create an array of characters to store the input string

• Iterate through the input string and store each character in the array

• Iterate through the array in reverse order to construct the reversed string
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Q3. Diff b/w abstract class and abstract method
Ans. 
Abstract class is a class that cannot be instantiated, while abstract method is a method without implementation.
• Abstract class can have both abstract and non-abstract methods, while abstract method must be inside an abstract class.

• Abstract class can have constructors, while abstract method cannot have a body.

• Abstract class can have variables, while abstract method cannot have a body.
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Q4. What are truncate, delete and drop statement in sql
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Truncate, delete, and drop are SQL statements used to remove data or objects from a database.
• Truncate: Removes all rows from a table without logging individual row deletions. It is faster than delete but cannot be rolled back.

• Delete: Removes specific rows from a table based on a condition. It logs individual row deletions and can be rolled back.

• Drop: Removes an entire table, view, index, or database from the database s
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Q5. What is init() funtion
Ans. 
init() function is a method used in programming to initialize an object or set up initial values.
• init() function is commonly used in object-oriented programming languages like Java and Python.

• It is called automatically when an object is created.

• The init() function is used to set default values, allocate memory, or perform any other necessary setup for an object.
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SQL coding using window functions and CTE

Q1. Question on SqL
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Q2. Question on PowerBi
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Q1. ML related questions
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Q2. Statistics questions -Regression, Time series
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Q1. An ecommerce analytics question, where given a table on which customer generated highest revenue on a certain month and year
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Q2. An ecommerce analytics questions, where given a table on which department has the highest number of employees last year
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Q1. Deep dive questions on my resume
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Q1. Tell me about your experience as a data analyst
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Q2. Tell me about your experience in consulting for a retail firm
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Q1. Tell me about your project
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Q2. How to deploy project into orchestrator
Ans. 
Project deployment into orchestrator involves packaging the project, configuring orchestrator settings, and deploying the package.
• Package the project into a deployable format (e.g. Docker container, zip file)

• Configure orchestrator settings such as environment variables, network configurations

• Deploy the packaged project to the orchestrator using tools like Kubernetes, Docker Swarm, or AWS ECS
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