Opto Marketing Interview Questions and Answers for Experienced

Q1. What are the types of derivatives?
Ans. 
Derivatives are financial instruments that derive their value from an underlying asset or security.
• Types of derivatives include futures, options, swaps, and forwards.

• Futures are contracts to buy or sell an asset at a predetermined price and date.

• Options give the buyer the right, but not the obligation, to buy or sell an asset at a predetermined price and date.

• Swaps involve exchanging cash flows based on different finan...read more
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Round duration - 90 minutes
Round difficulty - Medium

It was a cumulative test

Q1. 
Trapping Rainwater Problem Statement
You are given an array ARR of long type, which represents an elevation map where ARR[i] denotes the elevation of the ith bar. Calculate the total amount of rainwater t...read more
Ans. 
Calculate the total amount of rainwater that can be trapped within given elevation map.
• Iterate through the array to find the maximum height on the left and right of each bar.

• Calculate the amount of water that can be trapped above each bar by taking the minimum of the maximum heights on the left and right.

• Sum up the trapped water above each bar to get the total trapped water for the elevation map.
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Round duration - 90 minutes
Round difficulty - Medium

It was sophisticated in nature and a good brain buster.

Q1. 
Candies Distribution Problem Statement
Prateek is a kindergarten teacher with a mission to distribute candies to students based on their performance. Each student must get at least one candy, and if two s...read more
Ans. 
Determine the minimum number of candies needed to distribute to students based on their performance and ratings.
• Iterate through the array of student ratings and assign 1 candy to each student initially.

• Then iterate from left to right and check if the current student's rating is higher than the previous student, if so, assign candies accordingly.

• Similarly, iterate from right to left to handle cases where the current stu...read more
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Round duration - 1 hour
Round difficulty - Medium

Q1. DBMS
It revolved around basic concepts
Ans. 
DBMS is a software system that manages databases and allows users to interact with data stored in them.
• DBMS stands for Database Management System

• It helps in creating, updating, and managing databases

• Examples of DBMS include MySQL, Oracle, SQL Server

• It ensures data integrity, security, and efficient retrieval
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Round duration - 70 minutes
Round difficulty - Hard

It was a great experience

Round duration - 30 minutes
Round difficulty - Easy

It was in the day time. I was asked the programming language of my choice. It was mostly focused on programming fundamentals. I was asked 2 questions based on Data Structures and Algorithms.

Q1. How can you detect a loop in a linked list?
Ans. 
A loop in a linked list can be detected using Floyd's Cycle Detection Algorithm.
• Use two pointers - slow and fast, where slow moves one step at a time and fast moves two steps at a time.

• If there is a loop, the two pointers will eventually meet at some point within the loop.

• To detect the start of the loop, reset one pointer to the head and move both pointers one step at a time until they meet again.
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Round duration - 30 minutes
Round difficulty - Easy

This round was mostly focused on my resume and projects.

Q1. Tell me about your projects.
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Round duration - 30 minutes
Round difficulty - Easy

It was in the evening. I went to their office in Gurgaon. It was taken by one of the technology director who had a lot of experience. 
 

Moderate level aptitude with basics

Moderate level data structure questions

Competitive Programming

Q1. Java Basics, and related framework basics in depth
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Q1. Design Patterns and Design Principles
Ans. 
Design patterns and principles are essential for creating maintainable and scalable software.
• Design patterns are reusable solutions to common software problems.

• Design principles are guidelines for creating software that is easy to maintain and extend.

• Examples of design patterns include Singleton, Factory, and Observer.

• Examples of design principles include SOLID, DRY, and KISS.
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Q1. How you make yourself up to date with latest technologies
Ans. 
I stay up to date with the latest technologies by attending conferences, reading tech blogs, and participating in online forums.
• Attending conferences and tech events

• Reading tech blogs and articles

• Participating in online forums and communities

• Taking online courses and tutorials

• Experimenting with new technologies in personal projects
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