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Composition is a strong relationship where the child object does not exist independently of the parent object, while aggregation is a weak relationship where the child object can exist independently of the parent object.
Composition is a 'has-a' relationship, where the child object is part of the parent object.
Aggregation is a 'has-a' relationship, where the child object is not part of the parent object and can exist in...
Processes are independent instances of a program, while threads are lightweight units within a process sharing resources.
Processes have their own memory space, while threads share the same memory space within a process.
Processes are heavier to create and manage compared to threads.
Threads within a process can communicate more easily and efficiently compared to processes.
Example: In a web server, each client connection ...
C++ exceptions are used to handle runtime errors and abnormal conditions in a program.
C++ exceptions are thrown using the 'throw' keyword.
Exceptions can be caught and handled using 'try' and 'catch' blocks.
Unhandled exceptions will result in program termination.
Example: throw std::runtime_error("An error occurred!");
I applied via Naukri.com and was interviewed in Oct 2024. There was 1 interview round.
Incremental load in pyspark refers to loading only new or updated data into a dataset without reloading the entire dataset.
Use the 'delta' function in pyspark to perform incremental loads by specifying the 'mergeSchema' option.
Utilize the 'partitionBy' function to optimize incremental loads by partitioning the data based on specific columns.
Implement a logic to identify new or updated records based on timestamps or uni...
Sonarqube is a static code analysis tool used to detect code smells and bugs in code. It is integrated into CI/CD pipelines for continuous code quality checks.
Sonarqube is a static code analysis tool that identifies code smells, bugs, and security vulnerabilities in code.
Code smells are common programming issues that may indicate a deeper problem in the code. Examples include duplicated code, long methods, and complex ...
Program to find numbers divisible by 3 in a string and reverse their indexes.
Iterate through the string and check if each character is a number divisible by 3.
Store the divisible numbers in an array and reverse their indexes.
Join the array back into a string and return the result.
Apexon interview questions for popular designations
I applied via Recruitment Consulltant
Concurrent API calls happen when multiple requests are made simultaneously, allowing for faster processing.
Concurrent API calls can be achieved using asynchronous programming techniques such as callbacks, promises, or async/await.
API calls can be made in parallel or in sequence, depending on the requirements of the application.
Tools like Axios or Fetch API in JavaScript can be used to make concurrent API calls.
Concurre...
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I applied via Hirist and was interviewed in Apr 2024. There were 2 interview rounds.
I applied via Approached by Company and was interviewed in Oct 2024. There was 1 interview round.
Velocity is the rate of change of an object's position with respect to a frame of reference, typically measured in meters per second.
Velocity is a vector quantity, meaning it has both magnitude and direction.
It is calculated as the displacement of an object divided by the time taken to cover that displacement.
For example, if a car travels 100 meters in 10 seconds, its velocity is 10 m/s in the direction of travel.
A test bed is a platform or environment used to conduct testing of software or hardware.
Test bed is a controlled environment where tests can be conducted.
It may include hardware, software, network configurations, and other necessary components.
Test beds are used to simulate real-world scenarios for testing purposes.
Examples of test beds include virtual machines, physical devices, and cloud-based testing platforms.
I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
I applied via Approached by Company and was interviewed in Jul 2024. There were 5 interview rounds.
Asked some basic level questions
Asked little bit hard questions
Asked depth questions and wrote some sample programs
I applied via Recruitment Consulltant and was interviewed in Jul 2024. There were 2 interview rounds.
To build a simple react component
Create a new React component file
Define the component using a functional or class component
Render the component with JSX syntax
Export the component for use in other files
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