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Wissen Technology
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I applied via Campus Placement
Test Duration : 90 mins
Platform : Hackerearth
Number of Questions : 10 ( 5 MCQs + 3 Coding questions + 2 SQL Questions)
Questions were of Easy to Medium Level
Developed a web application for project management using React, Node.js, and MongoDB.
Created a user-friendly interface for project tracking and collaboration
Implemented authentication and authorization features for secure access
Utilized React for front-end development, Node.js for back-end, and MongoDB for database management
I applied via LinkedIn and was interviewed in Sep 2023. There were 2 interview rounds.
Basic aptitude que and coding snippet
2 coding que in any language and 1 in java compulsory
Top trending discussions
I applied via Company Website and was interviewed in Jan 2023. There were 2 interview rounds.
Pointers are variables that store the memory address of another variable. Oops concepts are programming principles. Maltitherding is not a known term.
Pointers allow for dynamic memory allocation and manipulation.
They are commonly used in C and C++ programming languages.
Example: int *ptr; // declares a pointer to an integer variable
Oops concepts include inheritance, polymorphism, and encapsulation.
They are used in objec...
I applied via Approached by Company and was interviewed in Oct 2021. There were 3 interview rounds.
I applied via Campus Placement and was interviewed in Mar 2023. There were 4 interview rounds.
Just Basic Questions
I applied via Naukri.com and was interviewed before Jul 2020. There was 1 interview round.
Name mangling is a technique used by compilers to give unique names to functions and variables to avoid naming conflicts.
Name mangling is used in C++ to support function overloading.
It is also used in Python to avoid naming conflicts in modules.
Name mangling can make it difficult to access variables and functions from outside the class in which they are defined.
In C++, name mangling can be seen by using the 'nm' comman
I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
Abstract Factory is a creational design pattern that provides an interface for creating families of related objects.
Abstract Factory is used when we need to create families of related objects without specifying their concrete classes.
It provides an interface for creating objects of related classes without specifying their concrete classes.
It encapsulates a group of factories that have a common theme.
It promotes loose c...
Range based map iteration can be done using a for-each loop or iterators.
Use a for-each loop to iterate over the map elements.
Alternatively, use iterators to traverse the map.
The range-based for loop is preferred for its simplicity and readability.
Example: for(auto const& [key, value] : myMap) { //do something with key and value }
Detached threads are independent threads that run separately from the main thread. Joined threads are threads that wait for the main thread to finish.
Detached threads are created using pthread_detach() function
Joined threads are created using pthread_join() function
Detached threads do not need to be explicitly terminated
Joined threads must be explicitly terminated using pthread_exit() or return statement
Detached thread...
Static code analysis tools are software programs that analyze source code to find potential issues and improve code quality.
Static code analysis tools scan code without executing it
They can detect issues such as security vulnerabilities, coding errors, and performance problems
Examples of static code analysis tools include SonarQube, ESLint, and Checkstyle
Command to list currently running threads in linux
Use the 'ps' command with the 'H' option to display threads in a hierarchy
Use the 'top' command to display threads in real-time
Use the 'htop' command for an interactive display of threads
No, arithmetic operations cannot be performed on unique pointers.
Unique pointers are used to manage the lifetime of dynamically allocated objects.
They cannot be copied or assigned, only moved.
Arithmetic operations are not defined for pointers, including unique pointers.
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