OnMobile Global Interview Questions and Answers

Q1. Linux questions LVM and storage and database
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Q2. Linux security and OS hardening
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Q3. Linux commands and file hierarchy
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Q4. Mysql and network basics
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Q5. Telecom Basics and Storage management
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Q1. 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 educa...read more
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Q2. 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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Coding test with 3 questions

Q1. Questions on Resume Basics of Core Java Java Pseudocode output One math problem on directions
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Q2. 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 m...read more
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Q3. 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 differ...read more
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Q4. 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 ...read more
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Q5. 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 ke...read more
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Overivew of the previous company project, and question about the system design ex LRUCache system and IRCTC DB design

2nd Round -
Basic Interview, Mostly system Design Question.