Narula Infrastructure Fiber Maintenance Engineer Interview Questions and Answers

Q1. Difference between let, const and var
Ans. 
let, const, and var are all used to declare variables in JavaScript, but they have different scopes and behaviors.
• let: block-scoped variable, can be reassigned

• const: block-scoped variable, cannot be reassigned, but its properties can be modified

• var: function-scoped variable, can be reassigned
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Q1. What's your weakness, strength, tell me more about your last project
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Q1. Managerial Round
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Java programming questions

Q1. What is OOP concept
Ans. 
OOP stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.
• OOP focuses on creating objects that contain data and methods to manipulate that data.

• Encapsulation, inheritance, and polymorphism are key principles of OOP.

• Example: Inheritance allows a class to inherit properties and behaviors from another class.
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Q2. Advantages of oops
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Advantages of OOP include code reusability, modularity, flexibility, and easier maintenance.
• Code reusability allows for the reuse of classes and objects in different parts of the program.

• Modularity helps in organizing code into manageable units, making it easier to understand and maintain.

• Flexibility allows for easy modifications and updates to the code without affecting other parts of the program.

• Easier maintenance is...read more
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Q1. Views on IOT with example
Ans. 
I believe IOT has immense potential to revolutionize various industries by connecting devices and collecting data for analysis.
• IOT can improve efficiency and productivity by automating processes

• It can enhance customer experience by providing personalized services

• IOT can also enable predictive maintenance to reduce downtime

• Example: Smart home devices like thermostats and security cameras that can be controlled remotely
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Q2. Strength and weakness
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Q1. Basic Core java , Angular, Hibernate , SpringBoot
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Q1. Share details of your previous job.
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Q2. Why should we hire you?
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Q3. Why are you looking for a change?
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Q4. Where do you see yourself in 5 years?
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Q5. What are your strengths and weaknesses?
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Q6. Tell me about yourself.
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Q1. Project based questions
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Wide range of aptitude questions including some technical

Q1. Pure technical interview theory + coding
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Q2. WAP to find the 2nd maximum number
Ans. 
WAP to find the 2nd maximum number in an array
• Sort the array in descending order and return the 2nd element

• Iterate through the array and keep track of the maximum and 2nd maximum

• Use a priority queue to find the 2nd maximum
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Q3. Explain design patterns
Ans. 
Design patterns are reusable solutions to common software design problems.
• Design patterns provide a common vocabulary for developers to communicate about solutions to common problems.

• They can improve code readability, maintainability, and scalability.

• Examples include the Singleton pattern, Factory pattern, and Observer pattern.
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Q4. Explain SOLID principles
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SOLID principles are a set of five design principles for writing maintainable and scalable code.
• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Subtypes should be substitutable for their base types.

• I - Interface Segregation Principle: Clients should ...read more
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Q1. Questions related to hobby
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Q2. Career expectations related to
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Q3. Family background discussion
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Q1. Angualr concepts, pipes, services, modules
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Q1. Question about previous company, work to do in Saint gobain
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Q1. C# - OOPs, Static Classes, Explicit Interface, Extension Method, Delegates. MVC - Filters, Partial View, Routing, Action Methods return type. Web Api - Return type, Authentication, Authorization. SQL - CTE...read more
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Q1. What you are expecting from us?
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Q2. What's your strength?
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Q3. How log you willing to work with us?
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Q1. Salary Expectations, and check for your confidence.
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60 Questions 30 Quantitative 20 logical 10 english

60 Questions 15 java 15 .net 15 sql 15 networking