Encora Interview Questions and Answers

Q1. Whats middlware and how to write custom middlewares in Django
Ans. 
Middleware in Django is a framework of hooks into Django's request/response processing. Custom middlewares can be written to perform additional functions.
• Middleware is a framework of hooks into Django's request/response processing

• Custom middlewares can be written by creating a class with methods like process_request, process_response, etc.

• Middleware classes should be defined in a middleware.py file in the Django app

• Mid...read more
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Q2. Asked SQL join query
Ans. 
SQL joins combine rows from two or more tables based on related columns, enabling complex queries and data retrieval.
• INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.a_id;

• LEFT JOIN: Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.a_id;

• RIGHT JOIN: Returns all records from t...read more
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Q1. Some intermmediate coding questions
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Q2. CORS error domain related questions
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Q1. Offer related discussion
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Q2. Some general questions about hobbies and all
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It was basic coding with python

Q1. Basic testing questions and concepts
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Q1. Basic testing questions and concept
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Q2. Oops concept
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Q1. We can have good experience with interview with good knowledge
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Q2. We can able to crack interview with real time concept
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Q3. We should have knowledge on subject we can crack interview based on working experience not with related questions
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Q4. Real time experience will make esay
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Q1. Leetcode 828 unique substring length
Ans. 
Count the number of unique substrings of a given length in a string.
• Use a sliding window approach to extract substrings of the specified length.

• Utilize a set to store unique substrings, ensuring duplicates are not counted.

• Example: For 'abc', unique substrings of length 2 are 'ab', 'bc'. Total = 2.

• Consider edge cases: If length > string length, return 0.
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Q2. Sql query to fetch employee details who joined last with 5 th highest salary
Ans. 
Fetch employee details for those who joined most recently with the 5th highest salary.
• Use a subquery to find the 5th highest salary.

• Use the ROW_NUMBER() function to rank employees by joining date.

• Join the results to get employee details based on the salary.
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Q1. What is circular reference cycle
Ans. 
Circular reference cycle occurs when two or more objects reference each other, creating an infinite loop.
• Circular reference cycle can lead to memory leaks as the objects involved will never be deallocated.

• To prevent circular reference cycles, weak references can be used in one of the objects.

• Example: Object A has a strong reference to Object B, and Object B has a strong reference to Object A, creating a circular refere...read more
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Q2. What is Actor in swift
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Q1. Lets start with introduction - Interview yourself
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Q2. Share your screen. I will let you know what to do after you share your screen.
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Q3. Create an application.
Ans. 
An application for managing personal finances.
• Allow users to input income and expenses

• Provide visual representation of financial data

• Include budgeting tools and goal setting features
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