Mentor Graphics Technical Staff Member Lead Interview Questions and Answers for Experienced

Round duration - 60 minutes
Round difficulty - Easy

The second round is also written but you need to write programming based on their concept.

Q1. 
Prime Numbers Identification
Given a positive integer N, your task is to identify all prime numbers less than or equal to N.
Explanation:
A prime number is a natural number greater than 1 that has no po...read more
Ans. 
Identify all prime numbers less than or equal to a given positive integer N.
• Iterate from 2 to N and check if each number is prime

• Use the Sieve of Eratosthenes algorithm for better efficiency

• Optimize by only checking up to the square root of N for divisors
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Q2. 
Palindrome String Validation
Determine if a given string 'S' is a palindrome, considering only alphanumeric characters and ignoring spaces and symbols.
Note:
The string 'S' should be evaluated in a case...read more
Ans. 
Check if a given string is a palindrome after removing special characters, spaces, and converting to lowercase.
• Remove special characters and spaces from the string

• Convert the string to lowercase

• Check if the modified string is a palindrome by comparing characters from start and end
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Round duration - 60 minutes
Round difficulty - Easy

Technical round with questions mainly on Java and OOPS concepts.

Q1. What is the difference between static methods and instance methods in Java?
Ans. 
Static methods belong to the class itself, while instance methods belong to individual objects of the class.
• Static methods are called using the class name, while instance methods are called using object references.

• Static methods cannot access instance variables directly, while instance methods can access both static and instance variables.

• Static methods are shared among all instances of the class, while instance method...read more
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Q2. What is the difference between an abstract class and an interface in Java?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, member variables, and methods with implementation.

• Interface can only have abstract methods and constants.

• A class can implement multiple interfaces but can only extend one abstract class.

• Example: Abstract class - Animal with abstract method 'eat', Interface - Flyable with m
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Q3. What is the difference between ClassNotFoundException and NoClassDefFoundError in Java?
Ans. 
ClassNotFoundException occurs when a class is not found during runtime, while NoClassDefFoundError occurs when a class was found during compilation but not during runtime.
• ClassNotFoundException is a checked exception, while NoClassDefFoundError is an Error.

• ClassNotFoundException occurs when a class is not found at runtime, usually due to a missing classpath or incorrect class name.

• NoClassDefFoundError occurs when a cla...read more
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Q4. What is the difference between an Error and an Exception in Java?
Ans. 
Error is a serious issue that cannot be handled at runtime, while Exception is a recoverable issue that can be caught and handled.
• Error is a subclass of Throwable and is usually caused by the environment or system, such as running out of memory or stack overflow.

• Exception is also a subclass of Throwable but is caused by the application code, such as invalid input or file not found.

• Errors are unchecked and are not meant...read more
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Q5. What is SerialVersionUID in Java?
Ans. 
SerialVersionUID is a unique identifier used by Java to ensure the compatibility of serialized objects.
• SerialVersionUID is a static final long variable in a class that implements Serializable interface.

• It is used to ensure that the serialized object can be deserialized correctly even if the class definition has changed.

• If the SerialVersionUID of the serialized object does not match the one in the class, an InvalidClass...read more
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Q6. What are the requirements for creating an immutable class in Java?
Ans. 
Requirements for creating an immutable class in Java
• Make the class final so it cannot be extended

• Make all fields private and final

• Do not provide setter methods, only getter methods

• Ensure that mutable objects are not returned in getter methods

• Override equals() and hashCode() methods for proper comparison

• Consider making defensive copies of mutable fields in constructor or getter methods
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Q1. The question is about the project.
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Q2. Microservice, AWS services related question
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Q1. More on SOLID principals
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Q2. Team lead's Scrum based responsibilities
Ans. 
The team lead's Scrum based responsibilities include facilitating daily stand-ups, sprint planning, backlog grooming, and ensuring the team follows Scrum principles.
• Facilitating daily stand-ups to ensure team members are aligned and aware of each other's progress

• Leading sprint planning meetings to define the scope of work for each sprint

• Organizing backlog grooming sessions to prioritize and refine user stories

• Ensuring ...read more
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Q3. Node.js Interview question
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Q1. Discussion about Skills and interest 9 managerial rounds
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Q1. Have you faced any situation where you stuck in the project and how did you manage it?
Ans. 
Yes, I faced a situation where I was stuck in a project and managed it effectively.
• I encountered a complex technical issue that was impacting the project timeline.

• I sought help from team members and conducted thorough research to find a solution.

• I communicated effectively with stakeholders about the issue and proposed a revised plan to address it.

• I prioritized tasks and delegated responsibilities to ensure smooth progr...read more
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Q2. What was the complex project you have worked on?
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Q1. Reactive forms in angular
Ans. 
Reactive forms in Angular are a way to build forms in a reactive and scalable way.
• Reactive forms use an underlying data model to manage form data.

• They allow for dynamic form creation and validation.

• They can be used with complex form structures and nested forms.

• They provide a more scalable and maintainable approach to form development.

• Example: Creating a reactive form with FormBuilder in Angular.
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Q2. Dependency injection
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Q1. Tell me about yourself, availability, visa-related questions
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Dynamic programming questions, longg time to complete the 2 questions

Problem solving : a clock with 3 hands, no numbers written, guess what it is

1 hour 3 questions easy to medium leetcode.

Q1. Core java, spring boot
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