Tech Mahindra Senior Application Support Engineer Interview Questions and Answers

Q1. What is @SpringbootAnnotation and what is difference between @Controller and @RestController.
Ans. 
SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.
• SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.

• @Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to return d...read more
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Q2. What is Stream API write the Stream API Code any code and lambda expression.
Ans. 
Stream API in Java provides a way to process collections of objects in a functional style.
• Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);

• Lambda expressions can be used with Stream API to define behavio...read more
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It was Easy to medium . overall good

It was Medium to tough level

Q1. What is fifo lifo
Ans. 
FIFO (First In, First Out) and LIFO (Last In, First Out) are inventory management methods.
• FIFO: Items that are added first are the first to be removed. Like a queue.

• LIFO: Items that are added last are the first to be removed. Like a stack.
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Q2. Whole data structure concepts
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Q1. What do you want to change in this country if you get a chance
Ans. 
I would focus on improving access to quality education for all citizens.
• Implementing policies to ensure equal opportunities for education

• Investing in infrastructure and resources for schools in underserved areas

• Providing scholarships and financial aid for students from low-income families

• Promoting vocational training programs to address skills gaps in the workforce
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Q2. I don't remember
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Q1. WHAT IS sage FRONT END PROGRAMMING LANGUAGE
Ans. 
Sage is not a front end programming language. It is a popular accounting software.
• Sage is an accounting software used by businesses for financial management.

• It is not a programming language, but rather a software application.

• Front end programming languages include HTML, CSS, and JavaScript.

• Sage may have APIs that allow integration with front end technologies.
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Q2. WHAT ARE THE REGULAR COMPLAINS USERS GET ON SAGE
Ans. 
Users commonly complain about slow performance, errors during updates, and difficulty in customization on Sage.
• Slow performance when running reports or processing large amounts of data

• Errors encountered during software updates or installations

• Difficulty in customizing the software to meet specific business needs

• Issues with integration with other software applications

• Lack of user-friendly interface leading to confusion
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Q1. Mostly asked java 8 update and distinct number in given array and Multithreading
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Q2. 2 program based on java 8, array reverse
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Q1. What is the Java code for comparing two strings for equality?
Ans. 
Use the equals() method in Java to compare two strings for equality.
• Use the equals() method to compare two strings for equality.

• Example: String str1 = "hello"; String str2 = "hello"; if(str1.equals(str2)) { // strings are equal }
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Q1. Basics of SQL and pl sql
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Q2. About project tht you worked
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Q1. Java ,SQL,linix question
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Q1. What are the differences between a procedure and a function?
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Q2. Write a query to find 3rd highest salary from each department
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Q3. What is synonym.
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Q4. What are the indexes you used ? Diff between bitmap and btree index
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Q1. What is bussniess rule ?
Ans. 
A business rule is a specific guideline or constraint that dictates how a business operates or makes decisions.
• Business rules are typically defined by stakeholders or subject matter experts.

• They help ensure consistency, compliance, and efficiency in business processes.

• Examples include age restrictions for purchasing alcohol, pricing strategies, and approval processes for expenses.
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Q2. What is update set?
Ans. 
An update set is a group of changes that can be moved from one instance to another in ServiceNow.
• Update sets are used to transport customizations, such as new fields, tables, or scripts, between instances.

• They help in organizing changes and tracking what customizations are being moved.

• Update sets can be previewed, committed, and rolled back if needed.

• Example: Creating a new field in a development instance and moving it
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