Apisero Interview Questions and Answers

Basic questions on generic IT terms

Q1. Questions based on skillset mentioned in resume
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Q2. Questions based on basic computer science knowledge
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Q1. Questions based on skilleset mentioned in resume
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Q2. Questions based on Mulesoft for me
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Q1. One more level up on technical questions
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Q1. Managerial and technical round
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Q1. Previous project discussion Javascript fundamentals. basic SQL queries
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Q1. Tell me something about integration patterns? With examples.
Ans. 
Integration patterns are design patterns used to integrate different systems and applications.
• Point-to-Point: Direct communication between two systems.

• Publish-Subscribe: One-to-many communication where a message is broadcast to multiple recipients.

• Message Broker: Middleware that facilitates communication between different systems.

• Shared Database: Systems share a common database to exchange information.

• File Transfer: Da...read more
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Q1. Preferred working model
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I prefer a collaborative working model where team members communicate openly and work together towards common goals.
• Open communication among team members

• Collaborative decision-making

• Regular team meetings to discuss progress and challenges

• Flexibility to adapt to changing project requirements
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Online aptitude assessment

Online coding test - i wrote it in python

Q1. Coding questions related with pyton, sql and some behavioural question
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Q1. Technical questions related to role
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Q2. JavaScript,Github
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Q1. Another round with senior technical person, Techno managerial kind of round
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Cloud , Big Data , Jenkins , CICD Pipeline

Q1. Computer Basic , Cloud computing , ETL , Java
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Q2. What at is finally block
Ans. 
Finally block is used in try-catch-finally statement to execute code after try and catch blocks.
• Finally block is optional and can be used with try-catch or try-catch-catch statements.

• It is executed regardless of whether an exception is thrown or not.

• It is often used to release resources like file handles, database connections, etc.

• Example: try { //code } catch (Exception e) { //code } finally { //code }
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Q3. How to get second largest salary from a table
Ans. 
To get the second largest salary from a table, you can use the SQL query with the ORDER BY and LIMIT clauses.
• Write a SQL query to select the distinct salaries from the table.

• Order the salaries in descending order using the ORDER BY clause.

• Use the LIMIT clause to retrieve the second row from the result set.
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Q4. What are joins , type of joins and example
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Joins are used to combine data from two or more tables based on a related column.
• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all rows from the left table and matching rows from the right table.

• Right join returns all rows from the right table and matching rows from the left table.

• Full outer join returns all row...read more
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