Extern Labs Software Trainee Intern Interview Questions and Answers

Quant , DI and logical questions

Programming test as per the form

Q1. What are your expectations from the internship?
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Q2. How can Wipro help your career growth?
Ans. 
Wipro can help my career growth by providing valuable training, exposure to diverse projects, and opportunities for advancement.
• Wipro offers comprehensive training programs to enhance skills and knowledge.

• Exposure to a wide range of projects allows for practical application of learning.

• Opportunities for advancement through internal promotions and career development programs.
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Given 1 string problem 2 array problem in the first round of interview

Q1. Asking question on anagram palindrome to create on system by screensharing and some other simple programming questions
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Q2. Write code on anagram
Ans. 
An anagram is a word or phrase formed by rearranging the letters of a different word or phrase.
• Create a function that takes in an array of strings as input

• For each string, sort the characters alphabetically

• Compare the sorted strings to check for anagrams

• Return true if the strings are anagrams, false otherwise
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Q3. Write code on palindrome
Ans. 
Palindrome code in Python using string slicing
• Define a function to check if a string is a palindrome by comparing it with its reverse

• Use string slicing to reverse the input string and compare it with the original string

• Return True if the string is a palindrome, False otherwise
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20 questions with pseudo codes and aptitude

Q1. Tell me about your self
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Q2. Sql -del and truncate
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Q1. What are custom hooks in React, and what are their use cases? Additionally, can you provide an example of a custom hook that performs an API call and utilizes the retrieved data?
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Q2. What is the difference between useMemo and useCallback in React?
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Q3. What is the difference between class-based components and functional components in React?
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Q4. How can you implement the lifecycle of a React component in a functional component?
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Q5. What are the various state management techniques available in React?
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Q6. What is the architecture of Redux, and what purposes do middlewares serve within it?
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Q7. What is hoisting in JavaScript?
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Q8. What is event bubbling in JavaScript?
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Q9. What are block scope and function scope in JavaScript?
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Q10. Have you had experience working with semantic tags in HTML?
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Q11. What are the various methods for creating an object in JavaScript?
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Q12. What are the differences between shallow copy and deep copy in JavaScript?
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Q13. What will be the output of the following JavaScript code fragment: `const a; function test() { console.log(a); }; test();`?
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Q14. How can you use CSS to arrange elements in a row and column layout?
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Q15. Have you utilized CSS preprocessors, and if so, which ones?
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Q16. If I have assigned different colors to an ID and a class and applied both to the same element, which color will be applied based on CSS specificity precedence?
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It was an aptitude test that included coding and various logical questions.

Q1. Domain questions
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Q2. Project level questions
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Q3. Mid level python questions
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Q4. Devops questions
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Q1. Scenario based question
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Q2. DevSecOps Questions
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Q1. Managerial Round. It was a casual discussion though about the project and role level activities.
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Q1. Its was just a formality
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Any ideas for an aptitude test?

Q1. You have a good network connection.
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Q2. Which individuals are currently employed?
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What is education in place?

What is a SQL Server?

Effective communication and any suggestion.

Q1. What is your name?
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Q2. What is your educational background?
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Q1. What type of work does the Deloitte company engage in?
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Q2. What type of work does Deloitte engage in?
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Q1. What is your father's name?
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Q2. What is your father's name?
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Engage with any assignment provided.

Please provide any assignments you have.

Q1. What's return statement in java
Ans. 
The return statement in Java is used to explicitly return a value from a method.
• The return statement is followed by the value that is to be returned from the method.

• It can only be used within a method body.

• Once a return statement is executed, the control is transferred back to the caller of the method.
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Q2. What are get set methods
Ans. 
Get set methods are used in object-oriented programming to retrieve and update the values of private variables.
• Get methods are used to retrieve the value of a private variable.

• Set methods are used to update the value of a private variable.

• They are commonly used to ensure data encapsulation and control access to class variables.
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Q3. What is the difference between an interface and an abstract class in Java?
Ans. 
Interface is a contract specifying methods that a class must implement, while abstract class can have both implemented and abstract methods.
• Interface cannot have method implementations, while abstract class can have both implemented and abstract methods.

• A class can implement multiple interfaces but can only extend one abstract class.

• Interfaces are used to achieve multiple inheritance in Java.

• Abstract classes can have c...read more
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Q4. How do you implement a stack in Java using an array?
Ans. 
Implement a stack in Java using an array
• Create an array to store the elements of the stack

• Keep track of the top of the stack using an index variable

• Implement push() to add elements to the stack

• Implement pop() to remove elements from the stack

• Example: String[] stackArray = new String[10];
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Q5. What is the difference between a HashMap and a TreeMap in Java?
Ans. 
HashMap is unordered and uses hashing to store key-value pairs, while TreeMap is ordered and uses a red-black tree to store key-value pairs.
• HashMap uses hashing to store key-value pairs, allowing for O(1) time complexity for get and put operations.

• TreeMap uses a red-black tree to store key-value pairs, maintaining order based on the keys.

• HashMap does not guarantee any specific order of elements, while TreeMap maintains...read more
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It was good . 3 question

It was hard, 5 questions

Q1. Face to Face interview .
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Q2. Java basic question
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Q3. Java question directly start with hard coding question
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Q4. Not asking self introduction or anything related past company
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Q1. NA i am not selected
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