Blenheim Chalcot Data Engineer Interview Questions and Answers

It was mixed like aptitude and from technical.

Q1. It was F2F round. Where technical questions were asked.
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Q1. Managerial round. It includes technical and managerial both
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Q1. HR round. It includes all the HR level questions
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Coding cum aptitude test on Hackerrank

Q1. First round interview . Consisted questions based on projects , dsa
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Q1. Round 2 . Question based from core technology. Micro services , etc
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Q1. Basic hr questions . Why are you fit for this role kind of things
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Basic coding question will be there

Q1. Opps , dbms , data structure
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Q2. Explain about inheritence
Ans. 
Inheritance is a mechanism in object-oriented programming where a class can inherit properties and methods from another class.
• Inheritance allows for code reuse and promotes code organization.

• The class that is being inherited from is called the parent or base class.

• The class that inherits from the parent class is called the child or derived class.

• The child class can access all the public and protected members of the par...read more
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Q1. OOPS, Design Patterns, SOLID Principles
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Q2. Logical Programming
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This was basic test it was easy

Q1. Here all question are based on my resume
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Q2. Explain your project What kind of work you did
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Q1. What is Django request response cycle.?
Ans. 
Django request response cycle is the process of handling a request and generating a response in Django web framework.
• Client sends a request to the server.

• The request is received by the Django server.

• Django uses URL patterns to match the requested URL to a view function.

• The view function processes the request and returns an HTTP response.

• The response is sent back to the client.
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Q2. What is django signals?
Ans. 
Django signals allow certain senders to notify a set of receivers that some action has taken place.
• Signals allow decoupled applications to get notified when certain actions occur elsewhere in the application

• They are used to avoid coupling between applications

• Signals are defined by providing a receiver function which gets called when the signal is sent

• Example: A signal can be sent when a new user is created, and a recei...read more
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Q3. Difference between list and tuple, list and array.
Ans. 
Lists and tuples are similar but tuples are immutable. Arrays are fixed size while lists are dynamic.
• Lists and tuples are both used to store collections of data.

• Tuples are immutable, meaning their values cannot be changed once created.

• Lists are dynamic and can be resized during runtime.

• Arrays are fixed size and can only store elements of the same data type.

• Lists and arrays can be indexed and sliced to access specific e...read more
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Q4. How to define private variables ?
Ans. 
Private variables are defined using access modifiers to restrict their access within a class.
• Use the 'private' keyword to define a private variable

• Private variables can only be accessed within the class they are defined in

• Private variables are often used to encapsulate data and prevent direct access from outside the class
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Q5. Oops concept, and 4 pillars of oops.
Ans. 
Oops concept is a programming paradigm based on the principles of abstraction, encapsulation, inheritance, and polymorphism.
• Abstraction: Hiding the implementation details and showing only the necessary information to the user.

• Encapsulation: Binding the data and methods together to protect the data from outside interference.

• Inheritance: Creating a new class from an existing class to reuse the code and add new features.

• P...read more
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Q6. What is decorator. ?
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1.Reverse a list
2.find pairs from a list sum of which is equal to an integer k.