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18/05/2020 04:05:22 PM

IGATE Interview Questions(cont'd)

Second Round: Technical interview round

IGATE Interview Questions

IGATE Interview Questions

About the Company: IGATE

IGATE (now a part of Capgemini group) is one of the leading company for Information technology. It is headquartered in Bridgewater, New Jersey, United States. IGATE is one of the world's leading provider of consulting, technology and outsourcing service with 180,000 employees in over the 40 countries. It was founded in 1996 and on April 27, 2015, it was acquired by French IT service group Capgemini.

KEY people:

  • Founder: Narendra Patni
  • Co-founder-Sunil Wadhwani
  • CEO of the Company: Srinivas Kandula

iGate Recruitment Process

The complete recruitment process goes through various rounds. Every round opens the door for the next round. Mainly the process involves three rounds. These rounds are:

  1. First: Written round
  2. Second: Technical interview round
  3. Third: HR interview round

First Round: Written round

Description

The very first round for IGATE recruitment process is written test. It consists of mainly two sections that are General Aptitude and English proficiency test. The complete test has 60 total numbers of questions, and there will be a negative marking of .25/wrong answer

Written test pattern:

English proficiency: 20 Questions

Quantitative aptitude: 15 Questions

Verbal Reasoning: 15 Questions

Verbal English Interview Questions

Fill the Correct option.

1) If Riya ________ ready ________ in the house, I will rent it out because it is vacant since long.

  1. were, stay
  2. is, staying
  3. would be, staying
  4. is, to stay

2) John _____________ along the road.

  1. ran
  2. fell
  3. sat
  4. stopped

3) ___________a match to light the candle in the room.

  1. Hit
  2. Rub
  3. Strike
  4. Fire

4) These instructions must be followed by every student __________ the semester _______exception.

  1. in, with
  2. throughout, without
  3. at, at
  4. with, without

5) In Rohan's family, when they sit at _______ dining table __________ family likes to do all____________ chitchatting.

  1. a, a, a
  2. a, the, a
  3. the, a, the
  4. the, the, the

6) I miss ________ the today's news, while I am travelling.

  1. watching
  2. watch
  3. to watch
  4. watched

7) Find the Antonym to the word "QUIESCENT."

  1. Active
  2. Dormant
  3. Weak
  4. Unconcerned

8) Arrange the following sentences in a correct order.

  • for the rest of the year
  • to buy anything else
  • if we use up the money
  • I think
  • we wouldn't be able

Correct Option will be

  1. 43521
  2. 45321
  3. 31542
  4. 35421

9) Priya was laughing so hard _______ Ravi's joke that she fell _______ her chair ________ the floor.

  1. on,of,to
  2. at,off,onto
  3. by,of,on
  4. of,at,upon

10) Success in the IAS examination depends ....... hard work only.

  1. At
  2. Over
  3. For
  4. On

Aptitude Questions

1) If 35% of 30 = 25% of X + 1, find the value of X.

  1. 38
  2. 28
  3. 42
  4. 32

2) Shiva purchased 40 shirts for Rs.3000. he spends 10% on transportation. What should be the selling price per shirt to gain a profit of 20%?

  1. 100
  2. 80
  3. 99
  4. 110

3) If a man travels with 5/6th of his usual speed, he is late by 15 mins. What is the usual time taken to travel?

  1. 60 min
  2. 40 min
  3. 75 min
  4. 30 min

4) If the current age of Ram's father is thrice of age of Ram. Then After 10 years, the age of father will be 2 times the age of Ram. The current age of Ram is-----

  1. 10 years
  2. 15 years
  3. 22 years
  4. 18 years

5) The average age of five girls in a hostel is 11. The oldest girl among them is 15 years old. What is the average age of the other girls?

  1. 12 years
  2. 9 years
  3. 10 years
  4. None of the above

6) The cost price of a bed is Rs.2400 which is 20% below the market price if it is sold at a discount of 16% on the market price then find its market price, selling price and profit?

  1. Rs.3000, Rs.2520, 5%
  2. Rs.4000, Rs.3520, 6%
  3. Rs.5000, Rs.6250, 7%
  4. None of the above

7) In how many ways letters of world "LEADING" can be arranged, so that vowels always come together?

  1. 350
  2. 720
  3. 480
  4. 5040

8) If the first day of year is Monday. Then what is the last day of the year, if it's not a leap year.

  1. Sunday
  2. Tuesday
  3. Saturday
  4. Monday

9) A and B can complete a work in 30 days, working together. Both worked for 20 days and then B left the work. The remaining work was completed by A alone in 20 more days. So in How many days B alone can complete the entire work.

  1. 50 days
  2. 60 days
  3. 48 days
  4. 54 days

10) Find the Value of (483*483*483+ 517*517*517) / (517*517 - 517*483 + 483*483)

  1. 1000
  2. 23.4568
  3. 5436948
  4. 1

Reasoning Questions

1) If the word TEACHING is coded as CHEATING, then how can be code the word GRADIENT?

  1. RADIGENT
  2. DIERATING
  3. RGDIEANT
  4. DIRAGENT

2) In a row of girls there are 16 girls between Neha and Ruchi. Neha is the thirty-second girl from the left end of the row. If Neha is nearer than Ruchi to the right end of the row, then how far away is Ruchi from the left end of the row?

  1. 16th
  2.  
  3. 15
  4.  
  5. 14th
  6.  
  7. None of the above

3) Statement:

I. no rubies are pearls

II. some pearls are diamonds

Conclusions:

I. no rubies are diamonds

II. some diamonds are pearls

  1. only conclusion I follows
  2. only conclusion II Follows
  3. both conclusion I And II follow
  4. neither conclusion I Nor conclusion II FOLLOWS

4) If BLACK will be coded as 145 like that RED -81,

GRAY- 204 then GREEN can be coded as:

  1. 540
  2. 385
  3. 400
  4. 245

5) Statement:

I. Some plastics are bowl

II. Some bowl are plates

III. Some plates are flowers

Conclusions:

I. some flowers are plastics.

II. Some flowers are bowl

III. No plastic is a flower.

  1. None follows
  2. Only I follows
  3. Only II follows
  4. Only either I or III follows
  5. Only III follows

6) Pointing to a girl in a photo album, Ajay said "she is the daughter of my father's son. How is Ajay related to her?

  1. Brother
  2. Cousin
  3. Father
  4. Uncle

7) which statements of the following is necessary to answer this question

Q: How long would Ram takes to complete the work?

Statement 1: Ram and Mohan working together, take 30 days to do the work

Statement 2: Ram, Shyam, and Mohan working together and finish the work in 20 days

Statement 3: Mohan is two times more efficient than Shyam

  1. All three statements
  2. Statements 1and3
  3. Statements 2and3
  4. statements 1and2

8) Find the best suitable analogy for PAIN:SEDATIVE:

  1. comfort: stimulant
  2. grief: consolation
  3. trance: narcotic
  4. ache: extraction

Second Round: Technical interview round

The candidates who will clear the first round will be shortlisted for the next round, i.e., Technical interview round in which candidate will be checked upon their technical skills. This interview round includes the question on the basis of different technologies such as C/ C++, JAVA etc. There will be no specific time limit and it totally depends on candidate knowledge. There is a list of some most asked technical interview questions in IGATE recruitment process, given with the most suitable answer.

1) Differentiate between low-level language and high-level language?

A computer cannot understand the human language, so we need a different type of language to communicate with the computer. There are various types of languages which a computer can understand and work accordingly so, there are two types of languages:

Low-level language and high-level language.

The main differences between both the languages are given below:

Low-level language High-level language
Low-level languages are machine dependent languages that means we cannot execute it on other platform. High-level languages are machine independent languages that mean we can execute it any platform (Mac, Windows, and Linux).
Low-level languages are more machine-readable. High-level languages are more human-readable.
It is difficult to write and compile a low-level language. It is easy to write and compile a high-level language as compared to low-level language
It is difficult to find errors and debug a program in a low-level language. Finding an error and debugging is easy in a high-level language.
Low-level languages are written in binary form, so these are faster than other languages. High-level languages are written in some human readable instruction which needs to convert to binary form so these are slower than
Example of low-level language is machine language. low-level languages
Example of high-level language is C++, Java etc.

2) Explain an interface in Java language?

Interface in Java is a way to achieve the abstraction. An Interface is like a class and also can have methods and variable as a class does but Interface only contains method signature and does not have a body.

  • An Interface cannot be instantiated in Java
  • An Interface includes methods which are public and abstract (by default).
  • A class can implement an interface.
  • For declaring an interface, we use the keyword interface.

Syntax:

 
  1. Interface Interface_Name{  
  2. //Methods  
  3. }  

3) How can we create an interface in Java?

To create an interface in Java, we can use the keyword "interface" followed by the interface name.

Example

 
  1. interface Employee {   
  2. int empid = 23;  
  3. String empname="John";  
  4. }  

We can implement an interface in a class by using keyword "implement" and can use abstract methods.

4) What is immutable class and how to create an immutable class in Java?

An immutable class is one in which once an object is created, then we cannot alter the values, or we cannot change its content. As in Java, we have wrapper classes like String, Boolean, Integer, etc., all these classes are immutable classes, and we can also create an immutable class by own.

Following are some requirement to create an immutable class in Java:

  • A class needs to declare as final so that it cannot be inherited.
  • All the data members of the class need to declare as final so its value can't be changed.
  • No option for setters method.
  • There should be getter methods for all variables.

5) "String class is immutable", explain the reason?

String class is immutable in Java that means we are unable to change its value. It is because a String object is always cached in the String pool, and these pools can be shared between various clients. So there will always a risk that if we change in client's string it will automatically affect all the client's action. So every time when we try to change the String value, it will create a new object

6) How can we inherit the constructor in a class, in Java?

We cannot inherit the constructor in the class. If we try to inherit a parent class constructor to the child class, then it will give the compile-time error because Constructor name should be same as the class name and constructor inheritance is against the constraint of Constructor.

Example:

 
  1. class ConstructInheritance{  
  2.       
  3.     ConstructInheritance()  
  4.     {  
  5.     System.out.println("This is Parent class Constructor");  
  6.     }  
  7. }  
  8.   
  9. class Child extends ConstructInheritance{  
  10.    
  11.      Child()  
  12.      {  
  13.     System.out.println("This is Child  class Constructor");   
  14. }         
  15.    public static void main (String[] args) {  
  16.     Child obj= new Child();  
  17.     Child obj2=new ConstructInheritance();  
  18. }  }  

Output:

Error message:
prog.java:10: error: invalid method declaration; return type required
   ConstructInheritance(){

Note: Although we can call parent class constructor in child class using super() method in a child class

7) What is a static keyword in Java? What is its significance?

Static keyword in Java can be used primarily for memory organization. A static member in Java class always belongs to its class, not an instance. A static keyword can be used with:

  • Blocks
  • Variables
  • Methods
  • Nested class

To create a static member, we need to declare it as static. The instance of a static member created only once, and it is shared across all the objects. A static member can be accessed before its object is created.

 
  1. class Employee   {  
  2.       
  3.   static int i;             //static variable  
  4.       
  5.     static void m1()     //Static method  
  6.     {  
  7.      System.out.println("This is static mehtod ");     
  8.     }  
  9.       
  10.     static                         //static block  
  11.     {  
  12.         for(i=1; i<=5; i++){  
  13.     
  14.         System.out.println("the value of i in static block=" +i);}  
  15.     }  
  16.    public static void main (String[] args) {  
  17.     m1();  
  18.     }  
  19. }  

Output:

the value of i in static block=1
the value of i in static block=2
the value of i in static block=3
the value of i in static block=4
the value of i in static block=5
This is static mehtod

8) What do you understand by Encapsulation, inheritance, and abstraction in JAVA?

The term encapsulation, Inheritance, and abstraction are the features of object-oriented programming. These features provide the facility to deal with the objects.

Encapsulation: Encapsulation is one of the primary features of OOPs concept. The process of binding the data and methods in a single unit is called as encapsulation.

With the help of encapsulation, we can hide the data members from other classes, and it is only accessible by its current class.

There are two ways to achieve encapsulation:

  • Modify the class variable as private.
  • Using public Setter and getter method to set and get the values.

Inheritance: - Inheritance in Java is a process by which on class can inherit the properties (methods and fields) of another class. It increases the reusability of methods and fields. We can use inherited methods and also can add new methods. Inheritance shows parent-child relationship also known as IS-A relationship.

There are the following terms used in inheritance:

Child class/Subclass: Child class or sub-class is one who inherits the other class.

Superclass/ Parent class: Superclass or Parent class is on which got inherited by another class. It is also known as base class. For inheriting one class, into another class we use extends keyword in Java.

Syntax for inheritance:

 
  1. class A extends B   
  2. {    
  3.    //methods and fields    
  4. }    

Where class A is child class, and class B is Parent class.

Abstraction: Abstraction is a one of the important Feature of OOPs concept, which helps a user to show only the functionality not the implementation details of the object. In Java languages we can achieve abstraction in two ways:

  • By using the abstract class (0 to 100%): A class which is declared using 'abstract' keyword is considered as an abstract class. An abstract class can have an abstract method as well as non-abstract methods.

Syntax:

 
  1. abstract class A{  }  
  • By using interface (100%): An interface in Java is the same as a class in java, it can have abstract methods and variables. But it cannot have a method body. we can declare it by using the interface keyword

Syntax:

 
  1. Interface Interface_Name{  
  2. //Methods    }  

9) What is Normalization? Explain its types?

Normalization is a technique of efficient database designing and organizing to achieve two basic requirements:

  1. Minimum redundancy of data
  2. Logical data integrity.

Normalization increases the performance of the database, as it allows a database to take very less space in memory.

There are mainly four types of Normalization, which are given below:

IGATE Interview Questions
  • 1NF: A relation in the table be in first normal form if each attribute is single value attribute
  • 2NF:
  • 3NF
  • BCNF

10) Can we check whether a link list is circular or not?

Yes, we can check that a given link-list is circular or not. A link-list will be a circular link-list if it follows the two main requirements:

  1. If a link list is not null terminated( it points to the first node)
  2. If all nodes are connected in the form of cycle.

11) What does itoa() function in C?

The itoa() function in C language used to convert an integer value to its equivalent null-terminated String. It stores the result in an array.

Syntax:

 
  1. char *  itoa ( int value, char * str, int base );  

Parameters:

value: A value which needs to be converted

str: A parameter which stores the converted value as an array

base: It represents the numerical value, which is used to give the conversion base, as base 2 for binary, base 10 for decimal.

12) How can determine the size of the class?

The size of a class depends on the size of its members. There are the following factors which determine the size of a class:

  • Size of all non-static members of the class
  • Size of its immediate parent class(if have)

13) What do you understand by aggregation? How it differs with the association?

In UML (Unified Modeling Language) there are various types of relationships for the object-oriented system. Association and Aggregation are also a type of relationship in UML.

Aggregation: Aggregation is a specific type of association between two or more objects. In Aggregation, objects can have their lifecycle with ownership. It is a one-directional association. If we destroy one object, it will not affect another one. It is also called as HAS-A relationship.

Association: Association is a relation between two objects with their own lifetime and without any ownership. An association relationship can be represented by the following type:

  • One-to-one
  • One-to-many
  • Many-to-many

The aggregation and composition are the part of the association.

14) Differentiate between constructor and destructor?(C++)

Differences between constructor and destructor are given below:

CONSTRUCTOR DESTRUCTOR
A Constructor is used to initializing the object of that class Destructor is used to destroy the previously created object of the class
Constructor name is always the same as class name with no any return type. Destructor name also same as the class name without any return type, but with ~ (tilde) prefix.
Constructor overloading is possible in a class Destructor does not allow overloading (it can only be specified once in a class).
Syntax: 
class EmployeeCons{
                   EmployeeCons(){   }
                                           };
 Syntax: 
class EmployeeDestr{
                         ~EmployeeDestr(){   }
                                            };
Constructor allocates the memory while creating an object Destructor release the memory while destroying an object.

15) What do you understand by pre-processor? What are different types of header files in C?

The C pre-processor is used to scan and modify a source code before its compilation. The line starting with the symbol # followed by the directive name, in the source code, is known as pre-processor directive. Pre-processor directive invoked by the compiler to process some code before the compilation process.

  1. Each line in code can have a single pre-processor directive
  2. Pre-processor directive does not include a semicolon at the end.

Header files are the files which contain macro definitions and functions definition. It used with pre-processor directives with a file extension of ".h." There are two types of header files in C:

  • System header files: These header files come with the compiler
  • User-created header files: These files are written by the programmer.

Following are some mainly used header files in C

  • #include
  • #include
  • #include
  • #include
  • #include, and many more.

16) What are some DBMS packages?

There are some built-in DBMS packages provided by Oracle. With the help of Oracle DBMS packages, we can create various Oracle applications.

Following are some basic packages provided by Oracle:

  • Oracle dbms_alert
  • Oracle dbms_application_info
  • Oracle dbms_aqadm
  • Oracle dbms_crypto
  • Oracle dbms_fga
  • Oracle dbms_job
  • Oracle dbms_job.submit
  • Oracle dbms_lob
  • Oracle dbms_metadata
  • Oracle dbms_monitor

17) Differentiate between compiler and interpreter?

A computer can only understand the code written in binary form, i.e., in the form of 0's and 1's, Therefore, to communicate with the computer we need to convert our code (source code) into machine code. And the compiler and interpreter both are the computer programs which convert a programming language from source code to machine code. The main differences between both of the translator are given below:

Compiler Interpreter
A compiler is a software program that converts a high-level language source code into a low-level language machine code The interpreter is a software program that is used to directly execute a source code written in a high-level programming language
It creates an intermediate source code. It does not create any intermediate code.
A Compiler converts the source code completely at a time Interpreter converts the source code line by line at a time.
A compiler converts source code in one go, hence these are faster. As interpreter converts a source code line-by-line, hence these are slower as compare to the compiler.
Finding an error is difficult. Finding an error is easy.
Used for the languages C, C++, C#, Scala, etc. Used for languages Java, PHP, Perl, Python, etc.

18) What type of operation can be performed using stack and queue in Data structure?

Organization of data in the computer can be done with the help of data structure so that data can be accessed easily and efficiently. There are different types of data structure used in computer, and two of them are Stack and Queue data Structure.

Stack: A stack is a type of linear-data structure, which logically represents and arrange the data in the form of a stack. As a real-life example of a stack is "plates arranged in the form of the stack." In a stack structure, any operation can be performed on data items from one end only.

A Stack structure follows a particular order for operation on data items, and that order can be LIFO (Last in First Out) or FILO (First in Last Out). A stack can be represented in the form of an array.

Types of Operations performed on Stack:

1. Push: Push is an operation that can be performed, to add an element in the stack.

IGATE Interview Questions

As in the above diagram, the top element was 93 (before addition of a new element), and after performing PUSH operation, a top element is 10. Now pointer will point at the top of the stack.

2. Pop: If we try to remove or delete an element from the Stack, then it is called as Pop operation.

IGATE Interview Questions

As in the above diagram, if we want to delete an element from the top of the Stack, then it can be done by the Pop operation.

3. isEmpty: If we wanted to check whether the stack is empty or not, then we can perform an isEmpty operation. It will return three values: If we will perform a Pop operation on empty Stack, then it is called underflow condition.

IGATE Interview Questions
Empty -1
Single element present 0
Stack is full N-1
Stack overflow N

4. Peek or Top: If we perform Peek operation it checks all the elements of the stack and returns the top element.

Queue: A Queue is an ordered collection of data elements same as a stack, but it enables insertion operation from one end called as REAR end and deletion operation from other end called as a FRONT end.

A Queue structure follows an order of FIFO (First in First Out) for insertion and deletion of the data element.

Real life example of a queue is people waiting to buy a movie ticket in a line.

IGATE Interview Questions

Types of Operations performed on Stack: The two main operations which can be performed

On Stack are Enqueue and Dequeue.

Enqueue:

This operation is performed to add an element in the queue at the rear end. After adding an element in a queue, the count of Rear pointer increased by 1. Below is the Array representation of queue with Enqueue operation.

IGATE Interview Questions IGATE Interview Questions

Dequeue:

This operation is performed to remove an element from the queue at the front end. After removing an element from the queue, the count of Front pointer gets decremented by 1. Below is the diagram which shows the removal of the data element from a queue.

IGATE Interview Questions

Other operations performed on the queue are:

Peek: This operation is used to get all the data elements of queue without deletion of an element, at the front end.

Isfull: This operation is performed to check whether a queue is full or not.

Isempty: This operation is performed to check whether a queue is empty or not.

19) What is use the of fprintf and fscanf?(C)

Function fprintf(): In C language this function is used to write the character, integer, and String values into a single file.

Syntax:

 
  1. int fprintf(FILE *stream, const char *format, ...) ;      
  2.   
  3.           Where stream= file pointer of datatype "FILE".  
  4. Format can %d, %s, %f, etc.  

Example:

 
  1. #include   
  2. #include   
  3.   
  4. int main () {  
  5.    FILE * fp;    //file pointer  
  6.   
  7.    fp = fopen ("file.txt", "w");   Opening file   
  8.    fprintf(fp, "%d %s %s %s", 12, "rollno", "student", "present");  //writing data of different format   
  9.      
  10.    fclose(fp);     //file closing  
  11.      
  12.    return(0);   }  

Output:

12 rollno student present

Function fscanf(): In C language fscanf() function is used to read set of characters or mixed data from the file.

 
  1. int fscanf(FILE *stream, const char *format, ....);   
  2. Where stream= file pointer of datatype "FILE".   
  3. Format can %d, %s, %f, etc.   

20) What is a linked list? Explain its applications?

  • A Linked list is a linear data structure similar to an array, which is used to store the data in an organized way.
  • In Linked list data elements are not stored in contiguous blocks.
IGATE Interview Questions

Applications of the Linked list:

  • A linked list can be used for implementations of stacks and queues.
  • Implementation of graphs can be done using the linked list
  • A linked list can be used for dynamic memory allocation
  • A linked list can be used for implementation of graph
  • It can be used for performing arithmetic operations on long integers.
  • A linked list can be used with the music player for playing the songs.

 

Người sưu tầm: Nguyễn Thị Bảo Trang

Link sưu tầm: https://www.javatpoint.com/igate-interview-questions

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