20+ Capgemini Engineering Interview Questions and Answers for Freshers

I have implemented various software applications on Linux OS.

• Developed a web application using Python Flask framework on Linux server

• Created a custom Linux kernel module for a hardware device driver

• Implemented a distributed system using Apache Kafka on Linux machines

• Optimized performance of a database server running on Linux by tuning kernel parameters

A microprocessor is a computer processor that incorporates the functions of a central processing unit on a single integrated circuit.

• Microprocessors are used in various electronic devices such as computers, smartphones, and gaming consoles.

• Register names include program counter (PC), accumulator (ACC), general-purpose registers (GPR), and memory address register (MAR).

• Registers are used to store data and instructions temporarily for processing.

• The number of registers and thei...read more

C++ is an extension of C with object-oriented programming features.

• C++ supports object-oriented programming while C does not.

• C++ has classes and templates while C does not.

• C++ has better support for exception handling than C.

• C++ has a standard library while C does not.

• C++ allows function overloading while C does not.

Arrays are contiguous blocks of memory while linked lists are made up of nodes that point to the next node.

• Arrays have fixed size while linked lists can grow dynamically.

• Insertion and deletion are faster in linked lists than in arrays.

• Arrays have better cache locality while linked lists have better memory utilization.

• Arrays are accessed using indices while linked lists are accessed using pointers.

• Examples of arrays include int[] and char[] while examples of linked lists inclu...read more

The process of converting Example.c file to Example.exe involves several steps.

• Preprocessing: includes header file inclusion, macro expansion, and conditional compilation

• Compilation: converts source code to object code

• Linking: combines object code with libraries to create executable file

• Debugging: identifying and fixing errors in code

• Optimization: improving performance of executable file

Data abstraction is the process of hiding implementation details and showing only necessary information.

• Abstraction is achieved through abstract classes and interfaces.

• It helps in reducing complexity and increasing efficiency.

• Example: abstract class Shape with abstract method draw() implemented by its subclasses like Circle and Rectangle.

SQL query to join two tables

• Use JOIN keyword to combine two tables based on a common column

• Specify the columns to be selected using SELECT keyword

• Use ON keyword to specify the common column between two tables

Recursion is a technique where a function calls itself to solve a problem. WAP for recursion is to write a program using recursion.

• Recursion is used to solve problems that can be broken down into smaller sub-problems.

• The base case is the condition where the function stops calling itself.

• The recursive case is where the function calls itself with a smaller input.

• Example: Factorial of a number can be calculated using recursion.

• Example: Fibonacci series can be generated using rec...read more

TCP/IP is a protocol used for communication between devices on the internet. OSI model is a conceptual framework for network communication.

• TCP/IP is a suite of protocols that governs communication between devices on the internet.

• OSI model is a conceptual framework that divides network communication into seven layers.

• TCP/IP is based on a four-layer model, which includes the application, transport, internet, and network access layers.

• The OSI model includes the physical, data li...read more

Program counter is a register that stores the memory address of the next instruction to be executed by the processor.

• Program counter is also known as instruction pointer.

• It is a part of the processor's control unit.

• The value of program counter is incremented after each instruction is executed.

• If a program counter is corrupted, the processor may execute incorrect instructions.

• Example: If the program counter is pointing to memory address 100, the next instruction to be executed...read more

SQL commands are used to interact with databases and manipulate data.

• SELECT: retrieve data from a database

• INSERT: add new data to a database

• UPDATE: modify existing data in a database

• DELETE: remove data from a database

• CREATE: create a new database or table

• ALTER: modify the structure of a database or table

• DROP: delete a database or table

• JOIN: combine data from multiple tables

• GROUP BY: group data based on a specific column

• ORDER BY: sort data based on a specific column

Join is a SQL operation that combines rows from two or more tables based on a related column between them.

• Join is used to retrieve data from multiple tables in a single query.

• There are four types of joins: Inner Join, Left Join, Right Join, and Full Outer Join.

• Inner Join returns only the matching rows from both tables.

• Left Join returns all the rows from the left table and matching rows from the right table.

• Right Join returns all the rows from the right table and matching rows...read more

A program to reverse a given string.

• Create an empty string to store the reversed string.

• Iterate through the original string from end to start.

• Append each character to the empty string.

• Return the reversed string.

Pointers are variables that store memory addresses. Heap is a region of memory used for dynamic memory allocation.

• Pointers are used to access memory directly

• Heap is used for dynamic memory allocation

• Pointers can be used to create data structures like linked lists

• Heap memory must be manually managed to avoid memory leaks

Single linked list operations involve adding and deleting nodes in a linear data structure.

• To add a node, create a new node and set its next pointer to the current head, then set the head to the new node.

• To delete a node, traverse the list until the node to be deleted is found, then set the previous node's next pointer to the node after the one being deleted.

• Be careful to handle edge cases such as adding to an empty list or deleting the head node.

The OSI model has 7 layers that define how data is transmitted over a network.

• Layer 1: Physical layer - deals with the physical aspects of transmitting data

• Layer 2: Data link layer - responsible for error-free transfer of data between nodes

• Layer 3: Network layer - manages the routing of data between nodes

• Layer 4: Transport layer - ensures reliable delivery of data between applications

• Layer 5: Session layer - establishes and manages connections between applications

• Layer 6: Pre...read more

String operations programs manipulate and modify strings.

• Use built-in string functions like substring, replace, and split.

• Implement algorithms like string reversal, palindrome check, and string compression.

• Regular expressions can also be used for advanced string operations.

• Examples: reversing a string, counting occurrences of a substring, converting a string to title case.

Linux is preferred over Windows for servers due to its stability, security, flexibility, and cost-effectiveness.

• Linux is open-source, allowing for customization and flexibility in server configurations.

• Linux is known for its stability and reliability, making it a popular choice for servers that require constant uptime.

• Linux has a strong focus on security, with regular updates and a large community of developers actively working to address vulnerabilities.

• Linux is cost-effecti...read more

Binary search is a search algorithm that finds the position of a target value within a sorted array.

• Divide the array into two halves

• Compare the target value with the middle element

• If the target value matches the middle element, return its position

• If the target value is less than the middle element, search the left half

• If the target value is greater than the middle element, search the right half

let is block scoped, var is function scoped, const is immutable

• let: block scoped, can be reassigned

• var: function scoped, can be reassigned

• const: block scoped, cannot be reassigned, but properties can be modified

Smoke testing, sanity testing, retesting, and regression testing are all types of software testing.

• Smoke testing is a quick and shallow test to check if the basic functionalities of the software are working.

• Sanity testing is a narrow and deep test to check if the major functionalities of the software are working after a change.

• Retesting is a type of testing that is done to ensure that a defect that was found and fixed has been resolved.

• Regression testing is a type of testing ...read more

Additive Manufacturing is a revolutionary technology that enables the creation of complex and customized objects through layer-by-layer construction.

• Additive Manufacturing, also known as 3D printing, has the potential to disrupt traditional manufacturing processes.

• It allows for the production of intricate designs that are difficult or impossible to create using traditional methods.

• Additive Manufacturing offers cost and time savings by eliminating the need for tooling and redu...read more

Oops Concepts are fundamental principles of Object-Oriented Programming.

• Encapsulation - binding data and functions together

• Inheritance - acquiring properties and behavior of parent class

• Polymorphism - ability of objects to take multiple forms

• Abstraction - hiding implementation details and showing only necessary information

Expected CTC and preferred location are important factors to consider in a job interview.

• Expected CTC refers to the salary or compensation package the candidate is expecting from the job.

• Preferred location indicates the geographical area where the candidate would like to work.

• These factors help the employer assess if the candidate's expectations align with the company's budget and location requirements.

• Candidates should research industry standards and consider their experienc...read more

A palindrome number is a number that remains the same when its digits are reversed.

• Convert the number to a string

• Reverse the string

• Compare the original string with the reversed string