NTT Global Data Centers and Cloud Infrastructure Associate Analyst Interview Questions and Answers

Print a specific pattern using any programming language.

Q1. What is a class in Object-Oriented Programming (OOP)?
Ans. 
A class in OOP is a blueprint for creating objects, defining their properties and behaviors.
• Classes are templates for creating objects in OOP

• They define the properties (attributes) and behaviors (methods) of objects

• Objects are instances of classes, each with its own unique data

• Inheritance allows classes to inherit properties and behaviors from other classes

• Encapsulation ensures that the data is hidden and can only be a...read more
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Q2. What is the difference between an abstract class and an interface?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.

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

• Abstract classes are used to define common characteristics of subclasses, while interfaces are used to define contracts for...read more
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Q3. What is joining and creating an inner join query?
Ans. 
Joining is combining data from two or more tables based on a related column, while an inner join query retrieves only the matching records.
• Joining is used to combine data from multiple tables in a database.

• Inner join query retrieves only the records that have matching values in both tables.

• Syntax for inner join: SELECT columns FROM table1 INNER JOIN table2 ON table1.column = table2.column;

• Example: SELECT orders.order_i...read more
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There were 30 questions on the aptitude test, all of which were part of the total count.

I have three questions: two related to data structures and algorithms, and one concerning SQL.

Q1. Got two questions DSA medium and Easy one
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Q1. Basic question on dot net and sql server
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Q1. Bit twisted and elaborative discussion on various technical spheres.
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3 rounds on hacker earth (easy to medium)
Q1 find longest rectangle in Matrix
Q2 print a pattern
Q3 some array question

Q1. SQL query to find second highest salary
Ans. 
SQL query to find second highest salary
• Use the ORDER BY clause to sort salaries in descending order

• Use the LIMIT clause to retrieve the second row
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Q2. Questions related to oops and resume
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Q3. Some DSA questions (don't remember) overall it was 60 mins long Received great feedback
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Q1. 4 DSA questions, oops, SQL, puzzles, and project related. Overall it was a 2-2:30 hour interview Recieved good feedback but was tired after all this
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Q1. Again DSA and project related questions and SQL All of these happened on the same day
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The first round was group discussion; which was conducted by an institution referring candidates to the company. I was shortlisted.

The next round was also conducted by the company itself, and it was group discussion again, it went well. I believe there were around 12 candidates in one batch, and I was shortlisted. And I got the selection mail for the final technical interview, but then they call me and say I'm kept on hold and never contacted me.

Q1. I was kept on hold thus i never got the chance of attending the interview.
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Q1. Asked about previous experience
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Q2. Why you want to change the job
Ans. 
Seeking new challenges and growth opportunities in a different environment.
• Desire for professional growth and development

• Looking for new challenges and experiences

• Seeking a better work-life balance

• Interested in exploring different industries or sectors
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Q1. Reverse a loop for a linked list
Ans. 
To reverse a loop for a linked list, iterate through the list and change the pointers to point in the opposite direction.
• Start by initializing three pointers: current, previous, and next.

• Iterate through the linked list, updating the pointers to reverse the direction of the links.

• Update the head of the linked list to point to the new first node after reversing the loop.
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Mathematics,General Aptitute,three coding question

Face to face interview.Ask questions on Data structure and algorithms

Q1. Where do you look from 5 years from now
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