HCL Group MS SQL DBA Interview Questions and Answers

Q1. Difference between logshipping mirroring, tempdb corruption, master db corruption, agents used in replication
Ans. 
Explanation of differences between logshipping, mirroring, tempdb corruption, master db corruption, and agents used in replication
• Logshipping involves copying and restoring transaction logs from one server to another for disaster recovery.

• Mirroring involves maintaining an exact copy of a database on a secondary server for failover purposes.

• Tempdb corruption can occur due to hardware failures, software bugs, or other is...read more
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Q1. WHAT IS YOUR EXPIRENCE?
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Q2. WHAT IS YOUR HIGHER GRADUATION PERIOD.
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Q1. What is pull request
Ans. 
A pull request is a method of submitting contributions to a project on GitHub for review and merging.
• Pull requests are commonly used in version control systems like Git to propose changes to a codebase.

• They allow developers to collaborate and discuss changes before merging them into the main branch.

• Pull requests typically include a description of the changes, related issues, and any necessary tests or documentation.

• Rev...read more
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Q1. What is sateful set
Ans. 
Stateful set is a Kubernetes controller that manages the deployment and scaling of a set of pods with persistent storage.
• Stateful set ensures that each pod in the set has a unique identity and stable network identity.

• Stateful set pods are created in order and are not replaced until they are deleted.

• Stateful set is commonly used for stateful applications like databases where each pod requires persistent storage.

• Example:...read more
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Q1. Dba backups in sql
Ans. 
DBA backups in SQL are essential for data protection and disaster recovery.
• Regularly schedule full, differential, and transaction log backups to ensure data is protected.

• Store backups in secure locations to prevent data loss in case of hardware failure or corruption.

• Test backups regularly to ensure they can be restored successfully in case of emergency.
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Q2. Dba replication
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Q1. Tell me about urself
Ans. 
I am a dedicated and experienced MS SQL DBA with a strong background in database administration and performance tuning.
• Over 5 years of experience working as a MS SQL DBA

• Proficient in database administration tasks such as backup and recovery, performance tuning, and security

• Skilled in troubleshooting and resolving database-related issues

• Experience with SQL Server Integration Services (SSIS) and SQL Server Reporting Serv...read more
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Q2. Strengths and weakness
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Q1. SQL patching, migration
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Q1. Discuss 4 case study related to supply chain management.
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Round duration - 140 minutes
Round difficulty - Medium

Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.

Q1. 
Sum of Two Numbers Represented as Arrays
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...read more
Ans. 
Given two numbers represented as arrays, calculate their sum and return the result as an array.
• Iterate through the arrays from right to left, adding digits and carrying over if necessary

• Handle cases where one array is longer than the other by considering the remaining digits

• Ensure the final sum array does not have any leading zeros
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Round duration - 20 minutes
Round difficulty - Easy

The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.

Round duration - 8 minutes
Round difficulty - Easy

This round was conducted right after finishing and clearing the technical round at the same place and on the same day.