upGrad Sdet (Software Development Engineer in Test) Interview Questions and Answers

Easy questions, 90 minutes for 30 questions

3 questions, 60 minutes for 3 questions, easy and standard

Q1. Merge overlapping subarrays
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Q1. Automation questions, coding questions
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Q1. Design Instagram hld
Ans. 
Design Instagram's high-level architecture.
• Use a microservices architecture to handle different functionalities like user authentication, image storage, and feed generation.

• Use a NoSQL database like MongoDB to store user data and images.

• Use a content delivery network (CDN) to serve images and videos to users quickly.

• Implement a caching layer to improve performance and reduce database load.

• Use a message broker like Rabb...read more
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Q1. Design Instagram, high level system design
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Design Instagram, a photo and video sharing social media platform.
• Use a scalable architecture with load balancing and caching.

• Store media files in a distributed file system like Amazon S3.

• Use a relational database for storing user data and metadata.

• Implement a content delivery network (CDN) for faster content delivery.

• Use machine learning algorithms for personalized content recommendations.

• Implement security measures l...read more
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Q2. Graph related questions
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Computer programming DBMS network mathematics python

Q1. Mostly covers the Java concepts
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Q1. Java concepts in detail
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Q2. Multithreading and details conpt in java
Ans. 
Multithreading in Java allows multiple threads to execute concurrently, improving performance and responsiveness.
• Multithreading in Java is achieved by extending the Thread class or implementing the Runnable interface.

• Threads share the same memory space, so synchronization is necessary to prevent data corruption.

• Java provides synchronized keyword, locks, and atomic classes for thread synchronization.

• Concurrency issues l...read more
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Q1. Types of testing on the pages Scenario based que
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Q1. Manual testing questions
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Questions were easy and on basic algorithm

Q1. Tell about your self
Ans. 
I am a software engineer with experience in web development and problem-solving.
• I have a Bachelor's degree in Computer Science.

• I have worked on various web development projects using languages like JavaScript, HTML, and CSS.

• I am proficient in using frameworks like React and Angular.

• I have experience in database management using SQL and NoSQL.

• I have strong problem-solving and analytical skills.

• I am a quick learner and a...read more
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Q2. Questions on os and dbms
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