Gupshup Lead Engineer Interview Questions and Answers

Q1. Questions regarding javascript
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Q2. Questions regarding php and wordpress
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Q1. Questions regarding Node js
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Q2. Questions regarding wordpress
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Q1. Salary discussion
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Q1. Explain Telco Security alongwith Protocols
Ans. 
Telco security involves protecting telecommunications networks and data from cyber threats. It includes protocols like SSL, IPSec, and VPN.
• Telco security focuses on securing telecommunications networks and data from cyber attacks

• Protocols like SSL (Secure Sockets Layer), IPSec (Internet Protocol Security), and VPN (Virtual Private Network) are commonly used in telco security

• Encryption and authentication are key compone...read more
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Q1. Mostly towards your programming and coding ability. 1. Starting from DS, trees, algorithm, multi threading 2. Ask around strings and arrays
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Q2. 1. longest path from node to node in tree
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The longest path from one node to another in a tree is the maximum number of edges that must be traversed to reach from one node to another.
• The longest path in a tree is also known as the diameter of the tree.

• The diameter of a tree can be found by first finding the farthest leaf node from any arbitrary node, and then finding the farthest leaf node from that leaf node.

• The sum of the distances from the root to the farthe...read more
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Q1. OS, In death problem solving questions, multi threading.
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Q2. 1. Process 2. Dynamic memory 3. segment corrupted recovery 4. design system to take billions of request
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Q1. Explain Oops Concept
Ans. 
Oops Concept is a programming paradigm that focuses on objects and their interactions to solve complex problems.
• Oops Concept stands for Object-Oriented Programming

• It is based on the principles of encapsulation, inheritance, and polymorphism

• Encapsulation allows bundling of data and methods into a single unit called an object

• Inheritance enables the creation of new classes by inheriting properties and behaviors from exist...read more
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Q1. Explain ACID property in SQL
Ans. 
ACID property ensures that database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, and Durability.

• Atomicity ensures that a transaction is treated as a single unit of work, either all or none of its operations are executed.

• Consistency ensures that a transaction brings the database from one valid state to another.

• Isolation ensures that concurrent transactions do not interfere with ...read more
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Q1. Related to Product development
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Q2. Product life cycle
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Reverse Linked List.
Print left view of tree.
Find 3rd highest salary.
Multiple other SQL questions.

Q1. Design parking lot. How you handle scenario when 2 persons trying to take same slot.
Ans. 
Implement a parking lot system to handle scenarios where two persons try to take the same slot.
• Implement a reservation system where slots can be temporarily reserved by users before they actually park their vehicles.

• Use a timestamp to track when a slot was reserved to resolve conflicts between users trying to park in the same slot at the same time.

• Implement a queue system to handle situations where multiple users are w...read more
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Normal question on python, SQL, Data structure, and 2 coding questions on Python & SQL.

This coding round was face-to-face. It was again on hackerrank portal. The interviewer just wants to know how you think and take approaches in terms of time and space complexity. and then you do code.