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Technical interview questions for Executive Engineer position
Memory leak is a situation where a program fails to release memory that is no longer needed
Static variables in C are variables that retain their values between function calls
Local variables are declared inside a function and have a limited scope, while global variables can be accessed from any part of the program
Method overriding is a feature in object-orient...
Comparison between C and Java, explanation of exception handling and stack operations.
C is a procedural language while Java is object-oriented.
Java has automatic memory management while C requires manual memory management.
Exception handling in Java involves try-catch blocks while C uses error codes.
Runtime exceptions are unchecked exceptions that occur during program execution.
Stack is a data structure that follows the...
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.
Designing Facebook is a complex task involving various components and technologies.
Identify the core features of Facebook such as user profiles, news feed, messaging, and groups.
Choose appropriate technologies for each component such as PHP for backend, React for frontend, and MySQL for database.
Ensure scalability and performance by implementing caching, load balancing, and database sharding.
Implement security measures...
I applied via Naukri.com and was interviewed in Nov 2020. There were 5 interview rounds.
I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 3 interview rounds.
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