National Engineering Works Interview Questions and Answers

15 minutes on paper coding questions is given

Q1. Java related question
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Q2. Jdk information on java
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Q3. Java interface in actual coding
Ans. 
Java interfaces are used to define a contract for classes to implement, allowing for polymorphism and loose coupling.
• Interfaces in Java are used to define abstract methods that must be implemented by classes that implement the interface.

• Interfaces can also contain constants, default methods, and static methods.

• Example: interface Animal { void eat(); } class Dog implements Animal { public void eat() { System.out.println
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Q4. Object oriented programming langauge
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Q1. Hr round on java
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Basic computer knowledge, English grammar

Q1. Tell me about yourself Common question
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Q2. Tell me about yourself
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Q3. Common topic we say about that topic
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Q4. Testing english knowledge
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Q1. Just observe how we work
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Q1. What is bias variance tradeoff in machine learning
Ans. 
Bias-variance tradeoff is the balance between underfitting and overfitting in machine learning models.
• Bias refers to error from erroneous assumptions in the learning algorithm, leading to underfitting.

• Variance refers to error from sensitivity to small fluctuations in the training set, leading to overfitting.

• The tradeoff involves finding the right level of model complexity to minimize both bias and variance.

• Regularizati...read more
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Q2. Explain your project
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Q3. Write a SQL code to find 2nd highest salary
Ans. 
SQL code to find 2nd highest salary
• Use the MAX() function to find the highest salary

• Use the WHERE clause to exclude the highest salary

• Order the salaries in descending order and limit the result to 1
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Q1. At to nhi hai yrr tum tud ho gya hai kya tumhare liye hai kya tumhare liye hai kya tumhare liye hai kya
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Q2. Tumhare liye hai kya tumhare liye hai kya tumhare liye hai kya tumhare liye hai kya tumhare liye hai kya tumhare
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Q3. Fgtyyyyyy in the tiger Raja Singh and my friend not
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Q4. Your name is not send me the tiger Raja Singh and my friend not your friend not your friend
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Q5. Try to get the tiger Raja Singh and my friend not your friend not your friend not
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Q1. Introduction, salse Related question
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Q2. System Related question
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Q3. Banking Related question
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Q4. Past job Related question
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Online courses provide by company

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Q1. Java ,oops,DBMS,data structure
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Q2. Diff between throw and throws Diff between class and interface
Ans. 
throw vs throws and class vs interface
• throw is used to explicitly throw an exception in a method while throws is used to declare the exception that a method may throw

• class is a blueprint for creating objects while interface is a collection of abstract methods that can be implemented by a class

• throw is followed by an exception object while throws is followed by the name of the exception class

• a class can have constructor...read more
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First round was based on logical questions and was taken on hacker earth

Q1. First question was based on rotating a matrix by 90 degrees
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