Dev Information Technology Reactjs Developer Interview Questions and Answers

Q1. What do you mean by M15 grade ? What is water cement ratio in concreting?
Ans. 
M15 grade refers to the mix ratio of concrete where M stands for mix and 15 represents the compressive strength of concrete in N/mm^2 after 28 days.
• M15 grade concrete has a mix ratio of 1:2:4 (1 part cement, 2 parts sand, 4 parts aggregate)

• The water cement ratio in concreting is the ratio of the weight of water to the weight of cement used in the concrete mix

• A lower water cement ratio results in stronger and more durab...read more
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Q1. What is your experience in ladt job?
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Skilled Based Test Done

Programming Language Test

Q1. Based on skills
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Q2. Based on experience
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Q1. Mostly questions are based on C++
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Q1. What is constructor and write it's code in C++
Ans. 
Constructor is a special member function that initializes objects of a class.
• Constructor has the same name as the class and no return type.

• It is called automatically when an object is created.

• It can be overloaded with different parameters.

• Example: class Car { public: Car(string make, string model) { ... } };

• Example: Car myCar("Toyota", "Corolla");
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Q2. What is operation overloading
Ans. 
Operation overloading is the ability to define multiple functions with the same name but different parameters.
• Allows multiple functions with the same name to perform different tasks

• Functions must have different parameters or different number of parameters

• Used to simplify code and improve readability

• Example: + operator can be overloaded to add integers, concatenate strings, or add complex numbers
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Q1. Resume related question
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Q2. Previous company-related questions
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Microsoft technologies

Q1. Session management
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I applied in campus placement first round is aptitude test

Q1. Ask question on oops concepts
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Q2. What ia polymorphism Pointers etc.
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is called with.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Animal class with methods eat() and sleep(). Dog and Cat classes can inherit from Animal and override
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Q3. Asked about academic project what is your role on these project
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Q4. Based on resume asked questions and mostly asked the oops and c++ concept
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Q1. Based on resume and asked weakness ,strength
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Q1. Spring MVC vs Spring Boot
Ans. 
Spring MVC is a framework for building web applications using the Model-View-Controller design pattern, while Spring Boot is an opinionated framework for quickly building production-ready applications.
• Spring MVC is more customizable and requires more configuration compared to Spring Boot.

• Spring Boot provides a set of defaults and auto-configuration options to simplify development.

• Spring Boot is ideal for microservices ...read more
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Q2. Collection and it's benefits
Ans. 
Collections are data structures that store and organize multiple elements.
• Collections allow for efficient storage and retrieval of data

• They provide various operations for manipulating the data, such as adding, removing, and searching for elements

• Examples of collections include arrays, lists, sets, and maps
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