HSBC Group Senior System Administrator Interview Questions and Answers

Q1. Array related problem
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Q1. C# oops related deep question
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Q1. Project Design related questions
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Q1. SQL Linq mvc net core related questions
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Asked basic questions .... To check concept and logic

Q1. SQL query for------ deleting duplicate from table
Ans. 
SQL query to delete duplicate records from a table while retaining one instance.
• Use a Common Table Expression (CTE) to identify duplicates.

• Example: WITH CTE AS (SELECT *, ROW_NUMBER() OVER (PARTITION BY column_name ORDER BY id) AS rn FROM table_name) DELETE FROM CTE WHERE rn > 1.

• Alternatively, use a temporary table to store unique records and then replace the original table.

• Example: INSERT INTO temp_table SELECT DIS...read more
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Q2. SQL query for second highest salary
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SQL query to find second highest salary
• Use ORDER BY and LIMIT to get the highest salary

• Use subquery to exclude the highest salary and get the second highest
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Q1. Basic information and documents verification
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Q1. Roles and responsibilities and queries solving .
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Medium leetcode problem on array and linked list. And some theoretical questions

Q1. Core java , collections, object oriented principles . Some small coding questions based on usage of overriding and overloading
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Q1. Multi treading and 1 problem solving question.
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Q1. Discussion with ED : expectations and managerial questions
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Q1. Typical HR questions
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Q1. About microservices and spring boot
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Q1. Internal working of string intern
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String intern is a method in Java that returns a canonical representation of a string object.
• String intern() method returns a canonical representation for the string object.

• If a string with the same contents is already in the string pool, then it returns the reference to that string.

• If not present, it adds the string to the pool and returns the reference.
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Q1. Microservice architecture
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Hackerrank - Coding test

Coding skills dynamic programming

Q1. Coding skills dynamic programming
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Q1. Microservices spring boot
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Technical coding skills

Q1. Java 8 features
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Q2. Transaction management in Java
Ans. 
Transaction management in Java involves managing database transactions to ensure data integrity and consistency.
• Use JDBC or JPA for transaction management

• Begin a transaction with 'beginTransaction()' method

• Commit the transaction with 'commit()' method

• Rollback the transaction with 'rollback()' method
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Q3. Api design using Spring boot
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Api design using Spring boot involves creating RESTful APIs with Spring framework for efficient communication between client and server.
• Use @RestController annotation to define RESTful web services

• Utilize @RequestMapping annotation to map HTTP requests to specific handler methods

• Implement request and response bodies using @RequestBody and @ResponseBody annotations

• Leverage Spring Boot's auto-configuration and embedded s...read more
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Q1. Design patterns and its usages
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Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating flexible, maintainable, and scalable software.

• Some common design patterns include Singleton, Factory, Observer, and Strategy.

• Each design pattern has a specific purpose and can be applied in different scenarios.

• Understanding design patterns can improve code quality and make development more efficient.
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Q2. System design interview questions
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