Freelancer.com System Engineer Interview Questions and Answers

It was very easy . Basic concepts were asked just refer face prep ,prep insta , and online study for you from YouTube .It will really help you a lot.

Q1. Why java string are immutable?
Ans. 
Java strings are immutable to ensure security, thread safety, and performance optimization.
• Immutable strings prevent malicious code from modifying the string content.

• Immutable strings can be safely shared across multiple threads without synchronization issues.

• Immutable strings allow for efficient memory allocation and garbage collection.

• String pool in Java is possible because of immutability.

• Examples of immutable class
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Q2. Why java doesn't support multiple inheritance?
Ans. 
Java doesn't support multiple inheritance to avoid the diamond problem.
• Multiple inheritance can lead to the diamond problem where a class inherits from two classes with a common parent.

• This can cause ambiguity in method calls and lead to code complexity.

• Java supports multiple interface inheritance to achieve similar functionality.

• For example, a class can implement multiple interfaces to inherit their methods.

• This allow...read more
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Q3. Simple coding questions
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Python

Good and easy not too difficult

Good not much difficult

Q1. Normal discussion
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Q2. Tell about your self
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Question were from math, reasoning,and coding mcqs

Q1. This was technical cum HR round where I have been asked basics of C and Java interview questions with some basic sql and database questions
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Basic aptitude questions were asked in this round

Q1. What is database
Ans. 
A database is a structured collection of data that is organized and managed to provide efficient retrieval and storage.
• A database is a software system that stores and manages data.

• It provides a way to organize and structure data for easy retrieval and manipulation.

• Databases can be relational, object-oriented, or hierarchical.

• Examples of databases include MySQL, Oracle, and MongoDB.
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Q2. What is quick sort
Ans. 
Quick sort is a sorting algorithm that uses a divide-and-conquer approach to sort an array of elements.
• It selects a pivot element and partitions the array into two sub-arrays, one with elements smaller than the pivot and the other with elements greater than the pivot.

• The process is repeated recursively on the sub-arrays until the entire array is sorted.

• It has an average time complexity of O(n log n) and is widely used
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Q1. What is your current location
Ans. 
I am currently located in New York City.
• New York City

• USA

• East Coast

• Manhattan
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Basic apti questions were asked

Q1. What is sorting
Ans. 
Sorting is the process of arranging elements in a specific order, typically ascending or descending.
• Sorting is used to organize data for easier retrieval and analysis.

• Common sorting algorithms include bubble sort, insertion sort, and quicksort.

• Sorting can be done on various data structures, such as arrays, lists, and trees.

• Example: Sorting an array of strings alphabetically.
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Q2. What is database
Ans. 
A database is a structured collection of data that is organized and managed to provide efficient retrieval and storage.
• A database is a software system that stores and manages data.

• It provides a way to organize and structure data for easy retrieval and manipulation.

• Databases can be relational, object-oriented, or hierarchical, depending on the data model used.

• Examples of databases include MySQL, Oracle, and MongoDB.
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Q1. What is your expectation
Ans. 
My expectation is to work in a challenging and dynamic environment where I can utilize my skills and knowledge to contribute to the success of the organization.
• To work with a team of talented professionals

• Opportunities for professional growth and development

• A supportive and collaborative work culture

• Clear communication and expectations from management

• A fair and competitive compensation package
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It was hard test and very tough

Coding was very hard bro so you have to study nicely

It's all about verbal,quant and puzzle

Q1. What are your strengths?
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Q2. Who can you justify your job?
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