Mphasis Module Lead Interview Questions and Answers

Q1. Java 8 Features
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Q2. Composition and aggregation
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Q1. How can duplicate characters be identified in a string using a single loop?
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Duplicate characters in a string can be identified using a single loop by utilizing a set to track seen characters.
• Use a Set: Initialize an empty set to keep track of characters that have been seen as you iterate through the string.

• Check for Duplicates: For each character, check if it is already in the set. If it is, it’s a duplicate; if not, add it to the set.

• Example: For the string 'hello', as you loop through, 'h' a...read more
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Q2. Basic oops and scenarios based question
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Basis data structure and algo

Q1. Basic oops and from java 8
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Q2. System design and design principles
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System design involves creating a high-level architecture of a software system based on requirements and design principles.
• System design focuses on structuring software components and their interactions.

• Design principles like SOLID, DRY, and KISS help in creating scalable and maintainable systems.

• Consider factors like performance, scalability, security, and maintainability during system design.

• Use design patterns like ...read more
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Q1. Selenium ,etl,java
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Q2. Irctc website textbox ,find element. reverse string java program, with space in name
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Q3. Fact table and dimension table
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Q4. Sql query for update
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SQL query for updating data in a database table.
• Use the UPDATE statement in SQL to modify existing records in a table.

• Specify the table name, column names, and values to be updated in the query.

• Use WHERE clause to specify the condition for which records to update.

• Example: UPDATE table_name SET column1 = value1, column2 = value2 WHERE condition;
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Q1. What is Indexing in SQL and why do we use Indexing?
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Indexing in SQL is a way to optimize database performance by creating a data structure that allows for faster retrieval of data.
• Indexing is a technique used to quickly locate and access the rows in a database table.

• It works by creating an ordered list of values from one or more columns in a table.

• By using indexes, the database engine can quickly find the rows that match a certain condition without having to scan the en...read more
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Q2. What is a recursive query?
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A recursive query is a query that refers to itself in order to retrieve data from a database.
• A recursive query is used to retrieve hierarchical data such as organizational structures or family trees.

• It typically involves a common table expression (CTE) in SQL.

• The query continues to execute until a specific condition is met, such as reaching the root node in a tree structure.

• Example: Finding all employees and their mana...read more
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Q3. What are the various joins in SQL?
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Various types of joins in SQL include inner join, left join, right join, and full outer join.
• Inner join: Returns rows when there is a match in both tables.

• Left join: Returns all rows from the left table and the matched rows from the right table.

• Right join: Returns all rows from the right table and the matched rows from the left table.

• Full outer join: Returns rows when there is a match in either table.
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Q1. Tell me about yourself.
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Q1. Salary discussion.
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Q1. Every thing in .Net- 1. OOPS 2. C# 3. MVC Life cycle, Filters 4. LINQ. 5. ADO.NET 6. EF 7.MS SQL- SP, JOINS, Indexers, Triggers, Asked to Write Queries using joins, cases.
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Q1. Client Round - technical questions, mainly to check basic knowledge about coding - detailed discussion on constructors. Project related, previous work done.
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