42Gears Mobility Systems Engineering Manager Interview Questions and Answers

Online code as per the given problem statement

Q1. Design round , system design
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Q1. Previous experience
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Q1. General HR questions
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Q1. General questions to filter.
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Case study and call simulation

Q1. General questions
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Q1. Previous exp in banking domain
Ans. 
Yes, I have 5 years of experience working in the banking domain.
• Managed projects for implementing new banking software systems

• Worked closely with stakeholders to ensure project goals aligned with business objectives

• Led a team of developers to customize banking applications for client needs
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Q1. Real time application
Ans. 
Real time application refers to software that processes data as it is received, providing instant feedback or results.
• Real time applications require low latency for immediate response

• Examples include live chat applications, stock trading platforms, and online gaming

• Data is processed and displayed instantly without delay
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Q2. What domain experience you have
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Q1. Salary negotiation ,company culture
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Some kind of cognitive test. Test was easy but a bit practice is necessary. 40 qstns in 20 mins.
Types of qstns :
1. comparing images and find the odd one.(around 10 qstns).
2. question on ratios.
3. Qstns on pi chart and bar graphs (like what is the percentage of certain portion out of whole).
4. Qstns on average (basic).
Advice: prepare the resources shared by HR.

Q1. Questions on Linux, java threads, tomcat servers, basic java, networking, tcp/ip, osi model,smtp.
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Q1. Techno-managerial round Rapid fire qstns, landed some out of my experience qstns. Again qstns on multithreading, networking, smtp, linux commands, resetting servers?, java threads, dead locks, thread logs...read more
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Q1. Screening of the resume
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Q2. Regarding candidature
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Q1. Related to job profile and technical requirements
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Q1. Salary structure and the part of joining date
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Current affairs - relevant things going on in the world especially financial/Fintech domain

Q1. Guesstimation questions- bursh up on them CV centric questions
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Q2. Agile Data analysis Situation based
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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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