Pattern Technologies Data Engineer Interview Questions and Answers

Q1. What is your experience
Ans. 
I do not have experience in the field of marketing.
• I have primarily focused on software development and engineering roles throughout my career.

• While I have worked closely with marketing teams on projects, my expertise lies in software development.

• I have not directly worked in marketing roles or projects.
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Q1. There werent specific questions
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Q2. Just a code challenge
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Q1. Sql related questions were asked
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Q2. Manual testing questions were asked
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Q3. Joins questions
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Q4. Where clause questions
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Q5. Manual testing questions
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A good DSA question, based on array manipulation and queues. Platform was Zoom call, so you can use any online IDE.

Q1. Question related to previous job Experience
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Q2. Questions related to OOPS concepts
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Q3. Question on System Design and Fundamentals of Language.
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Q1. Past Experience
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Q2. How you tackle with challenges in less time
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Q3. How you handle complete new tech stack?
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Q4. Approach towards trivial puzzles.
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Q1. Compensation Decisions
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Q1. Sorting of an array
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Q2. Bubble sorting algorithm
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Q1. Java oops question
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Q1. API questions related to put and patch api
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Q1. What is content security Policy
Ans. 
Content Security Policy (CSP) is a security standard that helps prevent cross-site scripting (XSS) attacks by allowing website owners to control which resources can be loaded on their site.
• CSP is implemented using an HTTP header that specifies approved sources of content such as scripts, stylesheets, images, fonts, and more.

• It helps protect against XSS attacks by restricting the sources from which certain types of cont...read more
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Q2. React question to have directory sturcture listing
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Combination of cn ,os cloud , SQL and c++

Q1. Java coding round for freshers
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Q2. Java coding round for freshers engineering
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Q1. How to identify if a queue is circular
Ans. 
A circular queue can be identified by checking if the rear pointer is one position behind the front pointer.
• Check if rear pointer is one position behind front pointer

• Check if front pointer is at index 0 and rear pointer is at index n-1 in an array of size n

• Check if front pointer is at index rear+1 modulo n in an array of size n
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Q1. Design notification system
Ans. 
Design a notification system for a software application.
• Identify the types of notifications needed (e.g. email, SMS, in-app)

• Consider the frequency and urgency of notifications

• Implement a notification queue to handle multiple notifications

• Include user preferences for notification settings

• Utilize push notifications for real-time updates
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Write multiple polyfills for array