Vocso Technologies Interview Questions and Answers

Q1. Basics questions in javascript questions like what is closures, what projects do you have created. How many threads run in React Native.
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Q1. What projects you have developed
Ans. 
I have developed various projects including a mobile app for tracking fitness goals and a web application for managing inventory.
• Developed a mobile app for tracking fitness goals using React Native

• Created a web application for managing inventory using Angular and Node.js

• Implemented a data analytics platform for analyzing user behavior using Python and SQL
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Q2. Have you implemented any Android sdk in the projects
Ans. 
Yes, I have implemented Android SDK in multiple projects.
• I have used Android SDK to develop various features like push notifications, location services, and in-app purchases.

• I have also integrated third-party SDKs like Facebook and Google Maps SDKs in my projects.

• I am familiar with Android Studio and have used it extensively for Android app development.

• I have experience with different versions of Android SDK and have d
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Q3. What is the flow of push notifications
Ans. 
Push notifications are sent from a server to a client device to notify the user of new content or updates.
• The server sends a notification to the push notification service (e.g. Firebase Cloud Messaging)

• The push notification service sends the notification to the client device

• The client device receives the notification and displays it to the user
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Q1. What is the reason for change. How many people are their in your family.
Ans. 
The reason for change can vary based on individual circumstances. The number of people in my family is...
• Reasons for change can include personal growth, career advancement, or seeking new challenges.

• The number of people in my family is [insert number].

• Example: The reason for change in my previous job was the lack of growth opportunities.

• Example: There are 4 people in my family.
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Q1. OOPS concepts with real life example
Ans. 
OOPS concepts are fundamental principles in object-oriented programming that help in organizing and managing code efficiently.
• Encapsulation: Wrapping data and methods into a single unit. Example: A car object with properties like color and methods like start() and stop().

• Inheritance: Reusing code from existing classes. Example: Animal class with properties and methods inherited by Dog and Cat classes.

• Polymorphism: Abil...read more
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Q1. Technical Discussion with higher management
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Simple questions related to simple interest , ratios and proportions

Q1. Basic knowledge of Oops Concepts and SQL And basic program like Pallimdrome Sum of digits of given number etc....
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Q1. Are you willing to work in night shift ?
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Q1. Find missing number form an array
Ans. 
Find missing number from an array of strings
• Convert all strings to integers

• Find the minimum and maximum values in the array

• Iterate through the range of values and check for the missing number
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Q2. Delete duplicate value from table
Ans. 
Use SQL query with DISTINCT keyword to delete duplicate values from a table.
• Use the DELETE statement with a subquery that selects the distinct values from the table.

• Example: DELETE FROM table_name WHERE id NOT IN (SELECT MIN(id) FROM table_name GROUP BY column_name);
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Coding test was based on the basic concepts.

Q1. It was machine test
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