Punj Lloyd Data Engineer Interview Questions and Answers

Basic math questions

Q1. Questions about oops concept
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Q2. What is function overloading and function overriding
Ans. 
Function overloading is having multiple functions with the same name but different parameters. Function overriding is redefining a base class function in a derived class.
• Function overloading allows multiple functions with the same name but different parameters.

• Function overriding involves redefining a base class function in a derived class with the same name and parameters.

• Example of function overloading: void print(in...read more
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Q1. Difference between let, const and var
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let, const, and var are all used to declare variables in JavaScript, but they have different scopes and behaviors.
• let: block-scoped variable, can be reassigned

• const: block-scoped variable, cannot be reassigned, but its properties can be modified

• var: function-scoped variable, can be reassigned
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Q1. What's your weakness, strength, tell me more about your last project
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Q1. Managerial Round
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Q1. Explain oops concepts in Java, what is synchronization.
Ans. 
OOPs concepts in Java and synchronization
• OOPs concepts include inheritance, polymorphism, encapsulation, and abstraction

• Inheritance allows a class to inherit properties and methods from another class

• Polymorphism allows objects to take on multiple forms

• Encapsulation hides the implementation details of a class from other classes

• Abstraction focuses on the essential features of an object

• Synchronization is used to control a...read more
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Technical plus general knowledge appti

Q1. OOPS concepts and .net questions
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Q1. Salary Discussion and Company culture
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Q1. I'm mohd mukeem i have qualifying 12th pass
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Q2. I have questioning
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Q3. I'm offline tast
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Q4. I'm offline tast
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Java programming questions

Q1. DIfference between Absolute and relative xpath
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Absolute xpath specifies the complete path from the root element to the desired element, while relative xpath starts from the current node.
• Absolute xpath starts with a single forward slash (/) and is more specific.

• Relative xpath starts with a double forward slash (//) and is more flexible.

• Absolute xpath is prone to breakage if the structure of the page changes.

• Relative xpath is easier to maintain as it adapts to change...read more
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Q2. Define push and fetch
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Push and fetch are two common operations used in software development and version control systems.
• Push refers to the action of sending local changes to a remote repository.

• Fetch refers to the action of retrieving the latest changes from a remote repository.

• Push and fetch are commonly used in Git, a popular version control system.

• Pushing changes allows others to access and review your code.

• Fetching changes ensures that ...read more
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Coding Test, Technical

Q1. Asking about the previous role and responsibility.
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