Yahoo DevOps Site Reliability Engineer Interview Questions and Answers

Implement boolean canConstruct(String targetString, String[] dict) which returns true if we can construct the targetString by concatenating the words given in the dictionary

Q1. Implement key value store
Ans. 
Implement a key value store for storing and retrieving data efficiently.
• Use a hash table or a balanced tree data structure to store key-value pairs.

• Implement functions for inserting, updating, deleting, and retrieving key-value pairs.

• Consider implementing features like transactions, concurrency control, and data persistence.

• Example: Implement a simple key value store using a hash table in Python.
Answered by AI
Add your answer

Q1. Focus on algorithms - trees, graphs. Questions on improving algorithm performance. Converting algorithm to code.
Add your answer

45 min round. Similar to Leetcode medium level question.

45 min coding round, 2 question asked

Q1. System design of proximity service
Ans. 
Design a system for proximity service
• Utilize geolocation data to track user locations

• Implement algorithms to calculate proximity between users

• Use real-time updates to notify users of nearby contacts
Answered by AI
Add your answer

Q1. Behavioral questions
Add your answer

Q1. Minimum Knight Moves (LC Medium)
Add your answer
Q2. OS, CN, DB concepts like multithreading, semaphore, tcp vs udp, transaction and ACId properties. Java concepts like stack vs heap(memory), error vs exception. Any 1 Project discussion for 10 mins
Add your answer

Q1. Leetcode island Graph problem
Add your answer

Coding Round 1
ZigZag Level order Traversal of Binary Tree.

I was not able to solve this problem and was not proceeded with next round of Interview.

Q1. Design Instagram feed
Ans. 
Designing Instagram feed involves displaying user's photos and videos in a visually appealing and user-friendly manner.
• Display user's posts in a grid layout with images/videos and captions

• Allow users to like, comment, and share posts

• Implement infinite scrolling to load more posts as user scrolls down

• Include a search bar to search for specific users or hashtags
Answered by AI
Add your answer

Q1. How you can contribute to our team?
Ans. 
I can contribute to the team by leveraging my technical expertise, problem-solving skills, and collaborative mindset.
• I have extensive experience in developing and maintaining complex software systems.

• I excel in problem-solving and troubleshooting issues to ensure smooth operation of software applications.

• I am a team player and enjoy collaborating with colleagues to achieve common goals.

• I am proactive in staying updated...read more
Answered by AI
Add your answer
Q2. What motivate you to join us?
Ans. 
I am motivated to join your team because of your innovative projects and collaborative work environment.
• Exciting projects that align with my interests and skills

• Opportunity to work with a talented and diverse team

• Positive company culture and values

• Room for growth and professional development
Answered by AI
Add your answer