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I applied via Recruitment Consulltant and was interviewed before Jan 2024. There was 1 interview round.
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
Joins are used to retrieve data from multiple tables based on a related column.
Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.
INNER JOIN returns rows when there is at least one match in both tables.
LEFT JOIN returns all rows from the left table and the matched rows from the right table.
RI...
The maximum salary in the employee table can be found by querying the database for the highest salary value.
Query the employee table for the maximum salary using SQL: SELECT MAX(salary) FROM employee;
Check for any outliers or errors in the salary data before determining the maximum value.
Consider any potential bonuses or additional compensation that may affect the salary values.
Common types of microservices include API gateways, service discovery, and event-driven architecture.
API gateways: Acts as a single entry point for multiple microservices, handling authentication, routing, and load balancing.
Service discovery: Allows microservices to find and communicate with each other dynamically, without hardcoding IP addresses.
Event-driven architecture: Microservices communicate through events, ena...
I have used RESTful APIs, SOAP APIs, and GraphQL APIs in my previous projects.
RESTful APIs: Used for creating, updating, reading, and deleting resources over HTTP.
SOAP APIs: Used for exchanging structured information in the implementation of web services.
GraphQL APIs: Used for querying specific data requirements and receiving a predictable response.
ITSM tools are software solutions that help organizations manage and optimize their IT services.
Incident management tools
Change management tools
Problem management tools
Asset management tools
Service catalog tools
Service desk tools
The type of database used is a relational database management system (RDBMS).
Uses tables to store data
Supports SQL for querying and managing data
Examples include MySQL, PostgreSQL, Oracle
VLOOKUP formulas are used in Excel to search for a value in a table and return a corresponding value from another column.
VLOOKUP with exact match: =VLOOKUP(lookup_value, table_array, col_index_num, FALSE)
VLOOKUP with approximate match: =VLOOKUP(lookup_value, table_array, col_index_num, TRUE)
VLOOKUP with wildcard characters: =VLOOKUP(CONCATENATE('*', lookup_value, '*'), table_array, col_index_num, FALSE)
I use Grafana and Kibana dashboards for monitoring purposes.
Grafana is used for visualizing time series data and monitoring metrics.
Kibana is used for analyzing and visualizing logs and other time-series data.
I was interviewed in Jan 2025.
Max diameter of a tree in Java is the longest path between any two nodes in a tree.
The diameter of a tree can be calculated by finding the longest path between any two nodes in the tree.
This can be done by finding the longest path from the root to a leaf node, and then finding the longest path from another leaf node to the root.
The sum of these two paths gives the diameter of the tree.
I applied via Referral and was interviewed in Oct 2024. There were 2 interview rounds.
Merge two sorted linked lists into a single sorted linked list
Create a new linked list to store the merged result
Iterate through both input linked lists and compare nodes to determine the order in which they should be added to the result list
Handle cases where one list is longer than the other
To check if parentheses are balanced, use a stack data structure to keep track of opening and closing parentheses.
Use a stack to push opening parentheses and pop when encountering a closing parenthesis
If stack is empty when encountering a closing parenthesis, return false
After iterating through all parentheses, if stack is empty, return true
The right view of a Binary Search Tree shows the nodes that are visible when viewing the tree from the right side.
The right view of a Binary Search Tree includes the rightmost node at each level.
Nodes at each level that are not visible from the right side are not included in the right view.
Example: For the Binary Search Tree with values 1, 2, 3, 4, 5, the right view would be 1, 3, 5.
I applied via Job Portal and was interviewed in Oct 2024. There was 1 interview round.
OOPS is Object-Oriented Programming, Inheritance is the ability of a class to inherit properties and behavior from another class, Static Binding is resolved at compile time, Dynamic Binding is resolved at runtime.
OOPS stands for Object-Oriented Programming, which is a programming paradigm based on the concept of objects.
Inheritance is a feature in OOP that allows a class to inherit properties and behavior from another ...
PayU Payments interview questions for popular designations
I applied via Approached by Company and was interviewed in Oct 2024. There was 1 interview round.
Get interview-ready with Top PayU Payments Interview Questions
posted on 17 Oct 2024
I applied via Approached by Company and was interviewed in Sep 2024. There were 2 interview rounds.
Case study analysis of your project management skills
I applied via LinkedIn and was interviewed in Nov 2024. There were 2 interview rounds.
Testing an payment flow on the application
I applied via Recruitment Consulltant and was interviewed in Dec 2024. There was 1 interview round.
Lazy loading defers the initialization of an object until it is actually needed, while eager loading initializes the object immediately.
Lazy loading is commonly used in Singleton pattern to delay the creation of the instance until it is requested.
Eager loading initializes the Singleton instance at the time of class loading.
Lazy loading can help improve performance by only creating the instance when needed, while eager ...
Use Spring Boot configuration to connect master and slave instances of a DB
Configure multiple data sources in application.properties or application.yml file
Use @Primary annotation for the master data source and @Qualifier annotation for the slave data source
Define separate DataSource, JdbcTemplate, and EntityManager beans for each data source
Use @Transactional annotation with the appropriate data source to specify whic
Global exception handler in Spring Boot handles all exceptions thrown by the application.
Global exception handler can be implemented using @ControllerAdvice annotation in Spring Boot.
It allows centralized exception handling for all controllers in the application.
You can define methods annotated with @ExceptionHandler to handle specific exceptions.
Global exception handler can return custom error responses or redirect to
I applied via Referral and was interviewed in Jul 2024. There were 2 interview rounds.
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