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OnMobile Global Interview Questions and Answers

Updated 16 Aug 2024

Q1. Difference between heap and stack and how memory clean up is done?

Ans.

Heap and stack are two different memory regions in a computer's memory. Heap is used for dynamic memory allocation, while stack is used for static memory allocation.

  • Heap is used for dynamic memory allocation, while stack is used for static memory allocation.

  • Heap memory is allocated at runtime and can be accessed randomly, while stack memory is allocated at compile time and accessed in a last-in-first-out manner.

  • Memory clean up in heap is done manually by the programmer using ...read more

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Q2. Internal working of HashMap?calculation part also

Ans.

HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.

  • HashMap uses an array of linked lists to store key-value pairs.

  • When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

  • If multiple keys hash to the same index (collision), a linked list is used to store all key-value pairs at that index.

  • To retrieve a value, the key is hashed again to find the index and then the linked li...read more

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Q3. Types of synchronization?

Ans.

Types of synchronization include mutual exclusion, semaphores, monitors, and condition variables.

  • Mutual exclusion: Ensures that only one thread can access a resource at a time.

  • Semaphores: Used to control access to a common resource by multiple threads.

  • Monitors: Combines data and procedures into a single unit to control access to shared resources.

  • Condition variables: Allow threads to wait for a certain condition to be met before proceeding.

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Q4. Capacity of SCP?

Ans.

SCP stands for Secure, Contain, Protect. It refers to a fictional organization that secures and contains anomalous objects.

  • SCP Foundation is a fictional organization in the SCP universe that secures and contains anomalous objects

  • The capacity of SCP refers to the organization's ability to contain and manage these anomalous objects

  • SCP Foundation has various containment facilities with different capacities to house different types of anomalies

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Q5. How will you position an app dedicated to children

Ans.

The app will be positioned as a fun and educational tool for children, offering interactive games and learning activities.

  • Focus on the educational benefits of the app, such as improving cognitive skills and creativity

  • Highlight the interactive and engaging features that will keep children entertained

  • Emphasize the safety measures in place to ensure a child-friendly environment

  • Collaborate with child psychologists or educators to ensure the content is age-appropriate and benefici...read more

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Q6. What key features will you add in the product

Ans.

Some key features to add in the product include enhanced user interface, advanced analytics capabilities, and seamless integration with other platforms.

  • Enhanced user interface for better user experience

  • Advanced analytics capabilities for data-driven decision making

  • Seamless integration with other platforms such as CRM systems or social media channels

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Q7. how you will handle customers

Ans.

I will handle customers by actively listening to their needs, providing prompt and accurate responses, and ensuring their satisfaction.

  • Actively listen to customers to understand their needs and concerns

  • Provide prompt and accurate responses to customer inquiries

  • Offer solutions and alternatives to address customer issues

  • Ensure customer satisfaction by following up and resolving any outstanding concerns

  • Maintain a positive and professional attitude when interacting with customers

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Q8. complete gcp cloud

Ans.

Google Cloud Platform (GCP) is a suite of cloud computing services provided by Google.

  • GCP offers services such as computing, storage, databases, machine learning, and networking.

  • Some popular GCP products include Compute Engine, Cloud Storage, BigQuery, and Kubernetes Engine.

  • GCP provides tools for monitoring, logging, and security to help manage cloud resources efficiently.

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Q9. Types of SQL Joins

Ans.

SQL joins are used to combine rows from two or more tables based on a related column between them.

  • Types of SQL 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.

  • RIGHT JOIN returns all rows from the right table and the matched rows from the left table.

  • FULL JOIN returns rows when there is a match in one of ...read more

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