National Engineering Office Interview Questions and Answers

Q1. Explain Compilation process steps?
Ans. 
Compilation process involves several steps to convert source code into executable code.
• Preprocessing: Includes header file inclusion, macro expansion, and conditional compilation.

• Compilation: Translates source code into assembly code.

• Assembly: Converts assembly code into machine code.

• Linking: Combines object files and libraries to create an executable file.

• Loading: Loads the executable file into memory and prepares it
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Quant , Logical REASONING , Java

Q1. Why should we hire you?
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Q2. What is your family background?
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Q3. Tell me about yourself.
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Q1. Could you please share your experiences?
Ans. 
Experienced Senior Engineer with a strong background in software development, project management, and team leadership.
• Led a team of 10 engineers in developing a scalable web application, improving performance by 30%.

• Implemented Agile methodologies, resulting in a 25% increase in project delivery speed.

• Designed and optimized database systems, reducing query response time by 40%.

• Mentored junior engineers, fostering a col...read more
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Q2. Why should Kone hire you?
Ans. 
I bring extensive engineering experience, innovative problem-solving skills, and a passion for enhancing urban mobility solutions.
• Proven track record in designing and implementing advanced elevator systems, improving efficiency by 20%.

• Strong collaboration skills demonstrated through successful cross-functional projects, leading to a 15% reduction in project timelines.

• Expertise in utilizing data analytics to optimize ma...read more
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Q1. Difference between normalisation and de-normalisation?
Ans. 
Normalization is the process of organizing data in a database while denormalization is the process of intentionally introducing redundancy into a database.
• Normalization is used to minimize data redundancy and improve data integrity.

• Denormalization is used to improve query performance by reducing the number of joins needed.

• Normalization involves breaking down a table into smaller tables and establishing relationships be...read more
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Q2. Write code logic for Fibonacci series?
Ans. 
Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Declare variables for first two numbers of the series

• Loop through the series and calculate the next number by adding the previous two

• Store the result in an array or print it

• Repeat until desired number of terms is reached
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Q3. Types of inheritance with real time example?
Ans. 
Types of inheritance include single, multiple, multilevel, hierarchical, hybrid, and multipath inheritance.
• Single inheritance: A child class inherits from a single parent class.

• Multiple inheritance: A child class inherits from multiple parent classes.

• Multilevel inheritance: A child class inherits from a parent class, which in turn inherits from another parent class.

• Hierarchical inheritance: Multiple child classes inher...read more
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Q4. Oops concepts - difference between object and class?
Ans. 
Object is an instance of a class while class is a blueprint for creating objects.
• Class is a template or blueprint for creating objects

• Object is an instance of a class

• Class defines the properties and methods that an object will have

• Object is created from a class using the 'new' keyword

• Multiple objects can be created from a single class
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Q1. What are your strengths and weaknesses?
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Q2. Tell me about yourself.
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