ProMobi Technologies Technical Support Engineer Interview Questions and Answers

Q1. Design Least recently used cache.
Ans. 
Design a Least Recently Used cache system.
• Implement a doubly linked list to keep track of the order of usage of cache items.

• Use a hashmap to store key-value pairs for quick access to cache items.

• When a new item is accessed, move it to the front of the linked list. If the cache is full, remove the least recently used item from the end of the list.
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Array and Java related questions

Q1. Complete Code for Ludo Game. Sort of Machine coding round.
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Q2. Given an array of intervals and return the minimum number of intervals you need to remove to make the rest of the intervals non-overlapping.
Ans. 
Remove overlapping intervals to minimize removals.
• Sort intervals by end time

• Iterate through intervals, remove overlapping intervals

• Return count of removed intervals
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I was asked to implement lru cache which i did but still didn’t made to next round as apparently i didn’t complete the working code though in my opinion i did

Based on concepts and past experience

Q1. Full day exam on saturday
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Q2. Coding related, dsa, aptitude etc
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Leetcode easy-medium

Q1. What is Cyber Security and information security?
Ans. 
Cyber security is the practice of protecting systems, networks, and data from digital attacks.
• Cyber security involves implementing measures to prevent unauthorized access, data breaches, and other cyber threats.

• It includes technologies, processes, and practices designed to protect networks, devices, programs, and data from attack, damage, or unauthorized access.

• Examples of cyber security measures include firewalls, ant...read more
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Q2. What are the types of encryption?
Ans. 
Types of encryption include symmetric encryption, asymmetric encryption, and hashing.
• Symmetric encryption: Uses the same key for both encryption and decryption, examples include AES and DES.

• Asymmetric encryption: Uses a pair of public and private keys for encryption and decryption, examples include RSA and ECC.

• Hashing: Converts data into a fixed-size string of bytes, examples include MD5 and SHA.
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There are three sections: -
1. Quants
2. English
3. Reasoning
All sections are accessible medium but you have maintained the speed and accuracy.
after that coding snippet are in java/python.

Code snippets are there in coding sections.