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10+ IQVIA Interview Questions and Answers

Updated 18 Sep 2024
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Q1. in a string there is alphabets as well as numbers, you have sum of those numbers which is in between of a string?

Ans.

Sum of numbers in a string with alphabets.

  • Iterate through the string and check if each character is a number.

  • If it is a number, add it to a running total.

  • Return the total sum of all numbers in the string.

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Q2. in a table there is 4-5 names, change the name of third person>>?

Ans.

To change the name of the third person in a table with 4-5 names.

  • Access the table

  • Identify the third person's name

  • Replace the name with the new name

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Q3. What is Arraylist ,linkedlist,map,hastable

Ans.

Arraylist, linkedlist, map, and hashtable are data structures used in programming.

  • Arraylist is a resizable array that can store any type of data.

  • Linkedlist is a collection of nodes that contain data and a reference to the next node.

  • Map is a collection of key-value pairs where each key is unique.

  • Hashtable is similar to a map but is synchronized and does not allow null keys or values.

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Q4. WAP of prime number?

Ans.

A prime number is a number that is only divisible by 1 and itself.

  • Start by checking if the number is less than 2, as prime numbers start from 2.

  • Use a loop to check if the number is divisible by any number from 2 to the square root of the number.

  • If the number is divisible by any of these numbers, it is not prime.

  • If the number is not divisible by any of these numbers, it is prime.

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Q5. 1. difference between abstract vs interface

Ans.

Abstract classes are classes that cannot be instantiated and can have both abstract and non-abstract methods. Interfaces are contracts that define the methods that a class must implement.

  • Abstract classes can have constructors while interfaces cannot

  • A class can implement multiple interfaces but can only inherit from one abstract class

  • Abstract classes can have instance variables while interfaces cannot

  • Interfaces can have default methods while abstract classes cannot

  • Abstract cla...read more

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Q6. Middleware and how can you declare it

Ans.

Middleware is software that acts as a bridge between different applications or components.

  • Middleware helps in communication between different software components

  • It can be used to handle requests, responses, and data transformation

  • Middleware can be declared in the configuration files of the software

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Q7. what is vcs? 2-OOPS 3-sql queries

Ans.

VCS stands for Version Control System, a tool used to track changes in code and collaborate with other developers.

  • VCS helps developers track changes in code over time

  • It allows multiple developers to work on the same codebase without conflicts

  • Common VCS tools include Git, SVN, and Mercurial

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Q8. Difference between asp.net mvc and .net core

Ans.

ASP.NET MVC is a web application framework developed by Microsoft, while .NET Core is a cross-platform, open-source framework.

  • ASP.NET MVC is a framework for building web applications using the Model-View-Controller pattern, while .NET Core is a general-purpose framework for building various types of applications.

  • ASP.NET MVC is Windows-only, while .NET Core is cross-platform and can run on Windows, macOS, and Linux.

  • ASP.NET MVC relies on the full .NET Framework, while .NET Core...read more

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Q9. Difference between wait and sleep

Ans.

wait is used for synchronization between threads while sleep is used to pause the execution of a thread

  • wait is used to wait for a specific condition to occur while sleep is used to pause the execution for a specific amount of time

  • wait releases the lock on the object while sleep does not

  • wait is called on an object while sleep is called on a thread

  • wait can be interrupted by another thread while sleep cannot

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Q10. Difference between runnable and start

Ans.

start() method starts a new thread and calls the run() method, while run() method executes the code in the current thread.

  • start() method creates a new thread and executes the code in the run() method of that thread.

  • run() method executes the code in the current thread.

  • Calling run() method directly does not create a new thread.

  • start() method can be called only once, while run() method can be called multiple times.

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Q11. What is the inheritance?

Ans.

Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.

  • Allows a class to inherit attributes and methods from another class

  • Promotes code reusability and helps in creating a hierarchy of classes

  • Derived class can access the properties and methods of the base class

  • Example: Class 'Car' can inherit from class 'Vehicle' to reuse common attributes like 'color' and 'speed'

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Q12. What is collection frameworks

Ans.

Collection frameworks in Java provide a set of classes and interfaces to store and manipulate groups of objects.

  • Collection frameworks provide reusable data structures like lists, sets, and maps.

  • They offer algorithms to manipulate and access the elements in these data structures.

  • Examples include ArrayList, HashSet, and HashMap in Java.

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Q13. Linked list and its application

Ans.

A linked list is a data structure where each element points to the next element, allowing for dynamic size and efficient insertion/deletion.

  • Linked list is made up of nodes, each containing data and a reference to the next node.

  • Insertion and deletion operations are efficient in linked lists compared to arrays.

  • Examples of linked list applications include implementing stacks, queues, and adjacency lists in graphs.

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Q14. What is oops concept

Ans.

Object-oriented programming paradigm focusing on objects and classes for code organization and reusability.

  • Encapsulation: Bundling data and methods that operate on the data into a single unit (object)

  • Inheritance: Ability for a class to inherit properties and behavior from another class

  • Polymorphism: Ability for objects of different classes to respond to the same method call in different ways

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Interview Process at IQVIA

based on 9 interviews
2 Interview rounds
Technical Round - 1
Technical Round - 2
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