HashRoot Technologies Linux Server Administrator Interview Questions and Answers

Q1. Where do we use BigInteger in java ?
Ans. 
BigInteger is used for mathematical operations involving very large integers in Java.
• BigInteger is used when the range of values supported by primitive data types like int and long is not sufficient.

• It is commonly used in cryptography and security applications.

• It provides methods for arithmetic, bitwise, and logical operations on large integers.

• Example: calculating factorial of a large number, generating large prime nu
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Q2. Merge Sort Algo code in java
Ans. 
Merge Sort Algo code in java
• Divide the array into two halves

• Recursively sort the two halves

• Merge the sorted halves

• Time complexity: O(n log n)
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They give some MCQ question from c#, .net,SQL, angular. Fizz Buzz type coding.

Q1. Basic oops concepts, splitter, 3 highest salary in SQL, procedure and functions difference. Basic questions of c#.
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Q1. Basic questions on testing.
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Q2. Write sample code on some basic queries supplied during interview.
Ans. 
Sample code for basic queries
• Use SELECT statement to retrieve data from a table

• Use WHERE clause to filter data based on conditions

• Use ORDER BY clause to sort data in ascending or descending order

• Use GROUP BY clause to group data based on a column

• Use JOIN clause to combine data from multiple tables
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Q1. Introduction confirmation about the interview schedule.
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Q1. Go through your resume
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Q2. Testing core knowledge on applied domine.
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Q1. About the salary negotiation.
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