CPA Global Senior Developer Lead Interview Questions and Answers

Q1. There were two technical and one HR round. Question were scenario based on sql and .net applications.
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Q2. Replication of Databases
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Q1. I was not selected for round two
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Q2. I am not aware of question in 2nd technical
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Q1. I was not selected for HR round
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Q1. Given an array of non-negative integers.Find the length of the longest subsequence such that elements in the subsequence are contiguous integers. The consecutive numbers can be in any order. Example n=7 nu...read more
Ans. 
Find the length of the longest subsequence of contiguous integers in an array.
• Sort the array

• Iterate through the array and check for consecutive integers

• Keep track of the longest subsequence found
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Q2. Get list of pincodes from these objects Employee{ id Long, name String, Addresses : List
} Addresses{ houseNo long, pindcode long, state String, country String, } Ans. Use flatMap to flatten and then use m...read more
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Use flatMap and map to extract list of pincodes from Employee objects
• Use flatMap to flatten the list of Addresses in each Employee object

• Use map to iterate over the flattened list and extract the pincodes

• Example: employeeList.stream().flatMap(emp -> emp.getAddresses().stream()).map(address -> address.getPincode()).collect(Collectors.toList())
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Q3. What is Database Pooling, Hikari and its configurations. Java 8 to current enchancements and current java version Factory and Builder design patterns to explain and code Project expalantion and details, Cr...read more
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Database pooling is a technique used to manage a pool of database connections for efficient resource utilization. HikariCP is a popular database connection pooling library in Java.
• HikariCP is a high-performance database connection pooling library for Java applications.

• It is known for its low latency and high throughput.

• Configurations for HikariCP include settings such as maximum pool size, connection timeout, and idle ...read more
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Q1. What is LMS ?
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LMS stands for Learning Management System, a software application for the administration, documentation, tracking, reporting, and delivery of educational courses or training programs.
• LMS helps organizations deliver online courses and training programs to employees or students.

• It allows for the creation and management of courses, assessments, and learning materials.

• LMS can track learner progress, generate reports, and p...read more
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Q2. What is shadow DOM
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Shadow DOM is a way to encapsulate the styling and structure of a web component, preventing styles from leaking out or clashing with the rest of the page.
• Shadow DOM allows for creating self-contained components with their own styles and markup

• It helps in preventing styles from the main document affecting the component and vice versa

• Shadow DOM can be created using the 'shadowRoot' property of an element
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Q1. What all exceptions you know ?
Ans. 
Some common exceptions in Salesforce development include DMLException, QueryException, and LimitException.
• DMLException: Thrown when an error occurs while performing DML operations like insert, update, delete.

• QueryException: Thrown when an error occurs while querying data from the database.

• LimitException: Thrown when governor limits are exceeded, such as SOQL query limit or CPU time limit.
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Q2. Have you worked on integration ?
Ans. 
Yes, I have worked on integration in Salesforce development.
• I have experience integrating Salesforce with external systems using REST and SOAP APIs.

• I have worked on integrating Salesforce with third-party applications like MailChimp and DocuSign.

• I have implemented custom integrations using tools like Salesforce Connect and MuleSoft.

• I have experience with data mapping, transformation, and synchronization during integrat
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Q1. Why governor limits ?
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Governor limits are in place to ensure efficient use of resources and prevent abuse in Salesforce platform.
• Governor limits help in maintaining system performance and preventing monopolization of resources.

• They ensure fair usage of resources among all users on the platform.

• Examples include limits on number of records retrieved in a single query, number of SOQL queries executed, and CPU time consumed.

• Governor limits also...read more
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Q2. What is challenge you faced ?
Ans. 
One challenge I faced was integrating a third-party API with Salesforce.
• Had to understand the API documentation thoroughly

• Encountered compatibility issues with Salesforce platform

• Implemented custom code to bridge the gap between API and Salesforce
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Q1. Context api, js related qstns, simple programming qstn,
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Q2. Remove duplicates without using set.
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Q1. Basic Java Question
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Q2. Spring Boot related questions
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Q1. Design a rest API and code it.
Ans. 
Design and code a REST API for a software developer interview.
• Define the endpoints and HTTP methods for the API (e.g. GET /users, POST /users)

• Implement authentication and authorization mechanisms (e.g. JWT tokens)

• Use proper status codes for responses (e.g. 200 OK, 401 Unauthorized)

• Include error handling and validation for input data

• Document the API using tools like Swagger or OpenAPI
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Q2. Questions related to JPA HIBERNATE SQL
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Q1. Discussion related to Last company Project and architecture level questions
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Q2. Write code to calculate frequency of a word using Stream API and lambda expressions
Ans. 
Calculate word frequency using Stream API and lambda expressions
• Use Stream API to convert array of strings to stream

• Use Collectors.groupingBy to group words by their frequency

• Use Collectors.counting to count the occurrences of each word
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20 aptitude,20 comunication,4 program questions

General topics . topics about online class vs office line class

Q1. In this round also they mainly check communication.after that basic questions about the what you put on your resume
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Q1. General round. In this round they told about the company and bond
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Q1. What are the traversal conditions for a Doubly Linked List? And write a program to traverse.This was the first question and I had no answer and ended up the interview immediately by asking any questions fo...read more
Ans. 
Traversal conditions for a Doubly Linked List involve moving forward and backward through each node.
• Start at the head node and move to the next node by following the 'next' pointer.

• To traverse backward, start at the tail node and move to the previous node by following the 'prev' pointer.

• Continue this process until reaching the end of the list.
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2 leetcode medium level type problems were given. This was a cut-off test were majority will be cut-off.

Long coding round - Paired with another thoughtworker

Q1. Questions on project
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Q2. Frameworks related
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