Question { 1764 }

Explain async and await?

Answer

async/await is a cleaner way to handle asynchronous code compared to Promises.
• await pauses execution until the Promise resolves.
• async ensures the function returns a Promise.

Question { 1919 }

What is a namespace in c++?

Answer

In this set of fresher-level C++ interview questions, one common topic is the concept of namespaces. Namespaces in C++ are used to organize multiple classes and functions, which simplifies application management..
The most commonly used namespace in C++ is the std namespace, which contains components of the standard library. Programmers can also create custom namespaces to encapsulate related functionality, helping to avoid name clashes in larger projects.
To access elements within a namespace, you can utilize the scope resolution operator (::) or the using directive.

Question { 1482 }

What is a friend function in c++?

Answer

• A non-member function that has access to the private and protected members of a class. Declared using the friend keyword.

Question { 1408 }

What are the main features of unix?

Answer

Key features of Unix include:
• Multiuser Capability: Multiple users can access the system simultaneously.
• Multitasking: Unix can execute multiple tasks concurrently.
• Portability: Unix can run on various hardware platforms.
• Security: Unix has robust security features, including file permissions and user authentication.
• Hierarchical File System: Organizes files and directories in a tree structure.
• Shell: An interactive command-line interpreter that allows users to interact with the system.

Question { 2235 }

What is a shell in linux?

Answer

The shell is a command-line interpreter that allows users to interact with the operating system. It accepts and executes commands.

Question { 1996 }

What are the different data types in javascript?

Answer

JavaScript has seven primitive types and one non-primitive type:
• Primitive Types: String, Number, Boolean, Undefined, Null, Symbol, BigInt
• Non-Primitive Type: Object (includes Arrays, Functions, and more)

Question { 1489 }

What is a function in c?

Answer

A function in C++ is a collection of statements designed to accept input, perform specific computations, and produce output. The primary purpose of a function is to group tasks that are frequently executed, which helps avoid code duplication. Instead of rewriting the same code for different inputs, you can simply call the function.
In essence, a function is a block of code that executes only when it is invoked.

Question { 1493 }

What is angular8?

Answer

Angular 8 version is released in May 2019 and it is a javascript framework to build applications in Typescript, HTML, and Javascript. Angular 8 supports unique and new features including angular material, CLI, and core framework.

Question { 1493 }

What is angular8?

Answer

Angular 8 introduced a number of new and unique options to runGuardsAndResolvers. In general, runGuardsAndResolvers is an option that is used for the Angular router configuration in order to control the resolvers and guards.
The first option available in runGuardsAndResolvers is pathParamsChange. Through, this option router will re-run the guards and resolvers. Whenever you want to control the resolvers and guards, use the runGuardsAndResolvers option in Angular 8.

Question { 1417 }

What is a lambda expression in c#?

Answer

• An anonymous function introduced in C++11, defined as:
• [capture_list](parameters) -> return_type { body }

Question { 1565 }

What are the applications of c#?

Answer

C++ has numerous applications, which are frequently highlighted in C++ interview questions.
Major software companies and tech giants use C++ for various applications, including:
• Compilers: Many compilers, including those for C# and Java, are written in C++.
• Microsoft: Many Windows applications, including tools for coding and debugging, are developed using C++.
• MongoDB: This popular open-source database is written in C++ and used in web applications.
• Games and Animations: It is widely used in game development for optimizing resources and supporting multiplayer networking.
• Media Access: It is used to develop media players and manage video and audio files.

Question { 1368 }

What is a volatile variable in c++?

Answer

A volatile variable indicates to the compiler that the variable can be changed at any time, preventing optimizations.

Question { 2145 }

What are the different data types present in C++?

Answer

In C++ interview questions, one common topic is the different data types available. C++ data types are broadly classified into three categories:
• Primitive: Primitive data types include fundamental types like int, float, char, and bool.
• Derived: Derived data types are more complex and include arrays, pointers, and functions.
• User-Defined: User-defined data types, such as classes, structures, and unions, allow programmers to define custom data types.

Question { 1947 }

What do you mean by call by value and call by reference?

Answer

A common topic that often appears in C++ interview questions is the difference between call by value and call by reference.
• Call by Value in C++: In the call-by-value method, function arguments are passed by copying the value of the actual parameter.
• This ensures that the original values remain unchanged since a separate copy of the value is created for the function's parameters.
• Call by Reference in C++: In the call-by-reference method, the memory address (or reference) of the actual parameter is passed to the function.
• This allows direct access to and modification of the original values.
• Both the actual and formal parameters refer to the same memory address, so any changes made to the parameters within the function are directly reflected in the original values outside the function.

Question { 1777 }

What are the literals in Python?

Answer

In Python, literals are fixed values that are appended to variables immediately, without the need for calculation. In the source code, they stand for constant values
.