Apisero Interview Questions, Process, and Tips for Experienced

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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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
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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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Q1. Explain different mechanisms to implement caching in mule apps.
Ans. 
Various mechanisms like object stores, HTTP caching, and in-memory caching can be used to implement caching in Mule apps.
• Object stores can be used to store and retrieve data in key-value pairs for caching purposes.

• HTTP caching can be implemented by setting appropriate cache-control headers in HTTP responses.

• In-memory caching can be achieved using tools like Ehcache or Guava Cache.

• Cache scope in Mule can be used to cach...read more
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Q2. While deploying mule app to cloudhub if API policies are not yet retrieved by the embedded gateway then are the request served or blocked, and who manages this?
Ans. 
Requests are served if API policies are not retrieved by the embedded gateway, managed by the Mule app developer.
• Requests are served by default if API policies are not retrieved by the embedded gateway.

• The Mule app developer manages the deployment process and ensures that API policies are retrieved by the embedded gateway.

• If API policies are critical for the functionality of the app, the developer should ensure they ar
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