NCR Voyix Senior Developer Interview Questions and Answers

Q1. Strong consistency vs eventual consistency
Ans. 
Strong consistency ensures that all replicas of data are updated synchronously, while eventual consistency allows for temporary inconsistencies.
• Strong consistency guarantees that all clients see the same data at the same time.

• Eventual consistency allows for temporary inconsistencies but eventually all replicas will converge to the same state.

• Strong consistency is often used in systems where data integrity is critical, ...read more
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Q2. Calculate the size of the file system
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Calculating the size of a file system
• Determine the total size of all files and directories within the file system

• Include the size of all subdirectories and their contents

• Consider the size of metadata and file system overhead

• Use appropriate tools or commands to gather the necessary information
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Q1. All the questions from oops,.net,c#,web api,SQL
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Q1. All the questions from .net,c#,azure,sql
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Q1. All basic he questions
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Question related to operating system and computer network

Q1. Traverse all child nodes in tree
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Q1. Question related to cloud and oops
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Q1. Question related to my background and how web site work
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3 coding dsa question
Difficulty is On your luck
My friends got easy level
I got medium level
Some got hard questions as well

Ssh round , quant and logical
Tip: bring your calculator

Q1. Two Puzzle : bulb switching and candle
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Q2. Dsa questions such as string reverse, binary search
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Q3. Dbms and os core subject questions
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Q1. How are you better than others
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Q2. Why should we hire you
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In first round 4 coding question like 1 dsa 2 database and one is api and question is very simple . coding round was conducted in hackerrank

Q1. DSA QUESTION LIKE TREE AND GRAPH
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Q2. DP AND SORTING APPROACH
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Again same but dsa question and oops concept in deep level

Q1. What are the key concepts of Object-Oriented Programming (OOP)?
Ans. 
Key concepts of OOP include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Objects of different classes can be treated as objects of a common superclass.

• Abstraction: Hiding complex implementation details and showing onl
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Q2. What is the internal working mechanism of a HashMap?
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HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

• If multiple keys hash to the same index (collision), a linked list is used to store these pairs.

• To retrieve a value, t...read more
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Q1. String reverse
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Q2. Dsa linked lists
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Q3. Linked lists reverse
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Q4. Map unique elements
Ans. 
Map unique elements in an array of strings
• Create a map to store unique elements

• Iterate through the array and add each element to the map as a key

• Retrieve the keys of the map to get the unique elements
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Q5. Sets find elements in set
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Sets are data structures that store unique elements and can be used to efficiently find elements in the set.
• Sets do not allow duplicate elements, so each element in a set is unique.

• To find elements in a set, you can use the 'has' method to check if a specific element is present in the set.

• Sets are commonly used in programming for tasks like removing duplicates from a list or checking for the presence of specific elemen
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