Teachmint Team Lead Operations Interview Questions and Answers for Experienced

Q1. Whats your profile and experience elaboration?
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Q2. Why you want to go ahead with skill Lync only?
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Got 2 medium level DSA questions in the coding test

Q1. Computer fundamentals
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Q2. System Design Questions
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Q1. What makes you a suitable candidate for this position?
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Q2. Where do you envision yourself in five years?
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Q1. Tell me about your self ?
Ans. First of all thank you so much giving m e this opportunity to introduce my self poonam pandey from amethi in up .
Answered by Poonam Pandey
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Q2. Whats your qualification ?
Ans. I did my graduation my b.com RRPG College in amethi . i have done MBA AKTU in Lucknow . 2021 i am current working in tata capital housing finance.
Answered by Poonam Pandey
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Q1. Why should hare you?
Ans. Every person differnt differnt capabilities .
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Q1. Explain about Android lifecycle
Ans. 
Android lifecycle refers to the series of states that an activity or fragment goes through from creation to destruction.
• Android lifecycle includes states like onCreate, onStart, onResume, onPause, onStop, onDestroy, etc.

• Activities and fragments transition between these states based on user interactions and system events.

• Understanding Android lifecycle is crucial for managing resources, saving state, and handling config...read more
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Q2. Explain about fragment lifecycle
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Fragment lifecycle refers to the series of events that occur in the lifespan of a fragment in an Android app.
• Fragments go through various states like created, started, resumed, paused, stopped, and destroyed.

• Fragment lifecycle methods include onCreate(), onCreateView(), onResume(), onPause(), onStop(), onDestroy(), etc.

• Fragment lifecycle is closely tied to the hosting activity's lifecycle.

• Understanding fragment lifecyc...read more
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Q1. Question on Binary trees: if symmetric, easy string question using hashmap
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Q2. If we are hosting a live test how to show real time ranking, HLD for this and what algorithms can we use
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Q1. Database schema design for a feature where user can be free, gold, platinum.
Ans. 
Use a user table with a column for user type (free, gold, platinum)
• Create a user table with columns for user ID, name, email, user type

• Use a separate table for user types with columns for type ID and type name

• Establish a one-to-many relationship between user and user type tables

• Example: user table - user_id, name, email, type_id; user_type table - type_id, type_name
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Q1. HLD for live rank dashboard for a live test where millions of users are doing test
Ans. 
High-level design for a live rank dashboard for a live test with millions of users.
• Use a scalable architecture to handle millions of users concurrently.

• Implement real-time data processing to update ranks dynamically.

• Utilize caching mechanisms to improve performance and reduce load on the database.

• Design a user-friendly interface with intuitive data visualization.

• Include features for filtering, sorting, and searching to
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Q1. What is DAX and its use in power bi
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DAX (Data Analysis Expressions) is a formula language used in Power BI for data modeling and analysis.
• DAX is used to create calculated columns and measures in Power BI.

• It allows for advanced data analysis, such as time intelligence functions (e.g., YEAR, MONTH).

• Example: A measure to calculate total sales could be defined as: Total Sales = SUM(Sales[Amount]).

• DAX supports filtering and context manipulation, enabling dyna...read more
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Q2. Role of power query in power bi
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Number system,30 min duration

Q1. What is promises
Ans. 
Promises are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used in JavaScript to handle asynchronous operations.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained together using .then() to handle success or failure.

• They help avoid callback hell and make asynchronous code more readable.

• Example: const myPromise = new Promise((res
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Q2. What is html and css
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HTML and CSS are languages used for creating and styling web pages.
• HTML (Hypertext Markup Language) is used for structuring content on a web page.

• CSS (Cascading Style Sheets) is used for styling the appearance of the content.

• HTML uses tags to define elements like headings, paragraphs, images, and links.

• CSS allows for customization of colors, fonts, layouts, and more.

• Both HTML and CSS are essential for creating visually
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