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General aptitude and 10 technical question
I applied via Campus Placement
Microcontrollers are small computers on a single integrated circuit used to control electronic devices.
Microcontrollers are designed for specific tasks and are often used in embedded systems.
They typically have on-board memory, input/output peripherals, and a central processing unit.
Examples include Arduino, Raspberry Pi, and PIC microcontrollers.
Bitwise operations in C are used to manipulate individual bits of data in variables.
Bitwise AND (&) - sets a bit to 1 only if both corresponding bits are 1
Bitwise OR (|) - sets a bit to 1 if either of the corresponding bits is 1
Bitwise XOR (^) - sets a bit to 1 if the corresponding bits are different
Bitwise NOT (~) - inverts all the bits in a variable
Left shift (<<) - shifts the bits to the left by a specified number o
Linked list is a data structure in C programming where each element points to the next element in the list.
Linked list is made up of nodes, each containing data and a pointer to the next node.
Insertion and deletion operations are efficient in linked lists compared to arrays.
Traversal in linked list requires iterating through each node starting from the head node.
Example: struct Node { int data; struct Node* next; };
Exa...
Pointer manipulation in C involves accessing and modifying memory addresses to work with data efficiently.
Pointers are variables that store memory addresses.
They are used to access and manipulate data directly in memory.
Example: int *ptr; ptr = # *ptr = 10;
I applied via Campus Placement and was interviewed before Sep 2023. There were 2 interview rounds.
Basic aptitude concepts and computer basics
iWave Systems Technologies interview questions for popular designations
I applied via Referral and was interviewed in Jun 2020. There were 3 interview rounds.
Top trending discussions
I was interviewed before May 2016.
I was interviewed in Nov 2016.
I am a motivated and enthusiastic individual with a strong passion for learning and gaining practical experience in the field of [internship field].
I am currently pursuing a degree in [relevant field] at [university name].
I have completed various projects and coursework that have equipped me with skills in [relevant skills].
I am a quick learner and enjoy taking on new challenges.
I have a strong work ethic and am dedica...
My interested area is artificial intelligence and machine learning.
I have a strong passion for developing algorithms and models to solve complex problems.
I enjoy working with large datasets and finding patterns within them.
I have experience with programming languages such as Python and R for machine learning projects.
posted on 17 Aug 2016
I was interviewed in Jan 2016.
Machine learning is a subset of artificial intelligence that enables machines to learn from data without being explicitly programmed.
It involves training algorithms on large datasets to make predictions or decisions.
It can be supervised, unsupervised, or semi-supervised.
Examples include image recognition, natural language processing, and recommendation systems.
Prediction uses data analysis and statistical models to forecast future outcomes.
Prediction involves collecting and analyzing data to identify patterns and trends.
Statistical models are then used to make predictions based on the identified patterns.
Predictions can be made for a wide range of applications, such as weather forecasting, stock market trends, and customer behavior.
Accuracy of predictions can be improved by ...
Classification algorithms can be represented using flow charts.
Classification algorithms are used to categorize data into different classes.
Flow charts can be used to represent the decision-making process of classification algorithms.
Examples of classification algorithms include decision trees, k-nearest neighbors, and support vector machines.
Deadlocks are situations where two or more processes are unable to proceed because each is waiting for the other to release a resource.
Deadlocks occur when multiple processes are stuck in a circular waiting state.
Prevention techniques include resource allocation strategies, deadlock detection, and avoidance algorithms.
Examples of prevention techniques are using a resource allocation graph, implementing a banker's algor...
Banker's algorithm is a resource allocation and deadlock avoidance algorithm used in operating systems.
It is used to prevent deadlocks by ensuring that the system never enters an unsafe state.
It works by simulating the allocation of resources and checking if the system will remain in a safe state.
It requires knowledge of the maximum resource needs of each process and the currently available resources.
If a request for r...
Public and private IP addresses are used in computer networks. Public IPs are globally unique and accessible from the internet, while private IPs are used within a local network.
Public IP is assigned by the Internet Service Provider (ISP) and is used to identify a device on the internet.
Private IP is assigned by a local network administrator and is used to identify a device within a local network.
Public IPs are globall...
A message is transferred in OSI layer through a process called encapsulation and decapsulation.
The message is divided into smaller chunks called packets at the transport layer.
Each packet is then encapsulated with headers containing necessary information.
The encapsulated packets are then passed down to the network layer.
At the network layer, the packets are further encapsulated with network layer headers.
The encapsulat...
Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as the same type.
Polymorphism is achieved through method overriding and method overloading.
It allows for code reusability and flexibility in object-oriented programming.
Three conditions for polymorphism are inheritance, method overriding, and a common interface or base class.
Interoperability in inheritance and polymorphism allows objects of different classes to be used interchangeably.
Inheritance allows a subclass to inherit properties and methods from a superclass.
Polymorphism allows objects of different classes to be treated as if they are of the same class.
Interoperability between inheritance and polymorphism allows objects of different classes to be used interchangeably.
For example, a ...
Transaction logs are records of all the changes made to a database or file system.
They help in recovering data in case of system failure or errors.
They provide a history of all the transactions made to the database or file system.
They are used for auditing and compliance purposes.
Examples include SQL Server transaction logs, file system transaction logs, etc.
C is a procedural programming language while C++ is an object-oriented programming language.
C is a procedural programming language, meaning it focuses on procedures or functions.
C++ is an extension of C and adds object-oriented features like classes and inheritance.
C++ supports polymorphism, encapsulation, and abstraction, which C lacks.
C++ allows the use of standard template library (STL) for data structures and algor...
I have worked on various technologies including Java, Python, and SQL.
Java - used for developing enterprise-level applications
Python - used for scripting, web development, and data analysis
SQL - used for managing and querying databases
Thrashing is a phenomenon in computer systems where excessive swapping of data between RAM and virtual memory occurs.
Occurs when a computer spends more time swapping data between RAM and virtual memory than executing actual tasks
Can be caused by insufficient RAM or poorly optimized programs
Can lead to a significant decrease in system performance
Example: A computer running multiple memory-intensive programs simultaneous
Java is platform independent while C++ is not.
Java code is compiled into bytecode which can run on any platform with a JVM, while C++ code needs to be compiled separately for each platform.
Java has automatic memory management through garbage collection, while C++ requires manual memory management.
Java has built-in support for multithreading, while C++ requires external libraries.
Java has a simpler syntax and is easier ...
Persistence is important for storing data permanently and ensuring data integrity.
Persistent storage allows data to be saved even after the application is closed or the system is restarted.
It ensures data integrity by preventing data loss in case of system failures.
Persistent data can be accessed and shared across different sessions or devices.
Examples: databases, file systems, cloud storage.
I found the GD to be well-organized and productive.
The GD had a clear agenda and all participants were given equal opportunity to express their views.
The facilitator ensured that the discussion stayed on track and encouraged active participation.
I appreciated the diverse perspectives brought by the participants, which enriched the discussion.
Examples: One of the participants shared a real-life case study that added dep...
I rate my HR interview as positive overall, with room for improvement in certain areas.
Overall, I felt the HR interview was well-structured and professional.
I appreciated the opportunity to discuss my skills and experiences in depth.
However, I felt that some questions were repetitive and could have been more engaging.
I believe the interview process could benefit from more focus on technical skills and problem-solving a...
I would recommend John and Sarah for their strong technical skills and ability to work well in a team.
John has a deep understanding of algorithms and data structures, and consistently delivers high-quality code.
Sarah is a quick learner and has a knack for problem-solving, often coming up with innovative solutions.
Both John and Sarah have excellent communication skills and collaborate effectively with their peers.
Precompilation unit is a compiled code that can be reused by multiple source files.
Precompilation unit is created by the compiler from the source code.
It contains the compiled code of header files and other dependencies.
It can be reused by multiple source files, reducing compilation time.
It is also known as precompiled header or PCH.
Example: stdafx.h in Visual Studio is a precompiled header file.
posted on 15 Feb 2016
The first 50 prime numbers are...
Start with 2, the first prime number
Check each odd number greater than 2
Use trial division to check if a number is prime
Stop when you have found 50 prime numbers
Sorting a file within a range
Use a sorting algorithm like quicksort or mergesort
Read the file and store the data in an array or list
Sort the array or list within the given range
Write the sorted data back to the file
I am a passionate software engineer with experience in developing web applications using various technologies.
Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular
Proficient in backend development with Node.js, Express, and MongoDB
Familiar with version control systems like Git and project management tools like Jira
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