Capgemini Engineering
10+ Chimatech Project Interview Questions and Answers
Q1. What have you done on real implementation on linux OS?
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
Q2. What is microprocessor and explain register names?
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
Q3. What is difference between C and C++?
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.
Q4. What is difference between array and linked list?
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
Q5. Explain whole process for Example.c file to Example.exe conversion
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
Q6. What is data abstraction and explain with code?
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.
Q7. Write a SQL query to join two tables?
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
Q8. WAP for recursion and explain its working?
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
Q9. What is TCP/IP,OSI model?
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
Q10. What is program counter?
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
Q11. Explain SQL commands?
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
Q12. WAP to reverse string?
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.
Q13. Explain pointers and heap ?
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
Q14. What is join and how many types.
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
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