Walmart Engineering Manager Interview Questions and Answers

Q1. Sys design for A scalable storage
Ans. 
Design a scalable storage system to handle increasing data volume and user traffic.
• Use distributed file systems like HDFS or GlusterFS for storing large amounts of data across multiple nodes.

• Implement sharding to distribute data across multiple servers to improve performance and scalability.

• Utilize caching mechanisms like Redis or Memcached to reduce latency and improve read/write speeds.

• Consider using cloud storage so...read more
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Q1. What is accrual and it's entry
Ans. 
Accrual is an accounting method where revenue or expenses are recognized when earned or incurred, regardless of when payment is received or made.
• Accrual accounting is the opposite of cash accounting

• Accruals are recorded as adjusting entries in the general ledger

• Examples of accruals include interest expense, salaries payable, and accounts receivable

• The entry for an accrual involves debiting an expense account and credit
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Q2. What is contingency liability
Ans. 
Contingency liability is a potential liability that may occur in the future based on certain events or circumstances.
• It is a liability that is not certain but may occur in the future

• It is based on certain events or circumstances

• Examples include lawsuits, warranties, and environmental cleanup costs
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Q1. No any questions due COVID
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Q1. Details about experience and some OOPs questions
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OOPs, polymorphism, SOLID principle, threads, concurrency, unit tests, coverage, testing

Q1. Turn a matrix by 90 degrees.
Ans. 
To turn a matrix by 90 degrees, transpose the matrix and then reverse each row.
• Transpose the matrix by swapping elements across the diagonal

• Reverse each row of the transposed matrix
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