phData Hadoop Administrator Interview Questions and Answers

Q1. What you did to learn new technology?
Ans. 
I keep myself updated by attending conferences, reading blogs, and taking online courses.
• Attend conferences and workshops to learn from experts

• Read blogs and articles to stay updated on latest trends

• Take online courses and tutorials to gain practical knowledge

• Experiment with new technology by building projects

• Collaborate with peers to learn from their experiences
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Q1. Can you tell us about your experience managing and optimizing databases?
Ans. 
I have extensive experience in managing and optimizing SQL databases for performance and reliability.
• Implemented indexing strategies that improved query performance by 30%.

• Conducted regular database health checks and maintenance tasks, such as updating statistics and rebuilding indexes.

• Utilized SQL Server Profiler to identify slow-running queries and optimize them, resulting in reduced execution time.

• Automated backup a...read more
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Q2. How do you handle database security and protect sensitive data from breaches?
Ans. 
Implementing robust security measures is essential to protect sensitive data in databases from breaches.
• Use encryption for sensitive data both at rest and in transit (e.g., AES for data at rest).

• Implement role-based access control (RBAC) to restrict data access based on user roles.

• Regularly update and patch database systems to protect against vulnerabilities.

• Conduct regular security audits and vulnerability assessments...read more
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Q3. Describe a time when you had to troubleshoot a critical database issue under pressure. How did you resolve it?
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Q1. What's your education?
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Q2. What's your past experience?
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Me very waste

Very good

GENERAL APTITITUDE TEST - GENERAL AND NUMERICAL QUESTIONS.

GLOBAL RECESSIONS- ITS EFFECTS

Q1. TECHNICAL QUESTIONS ABOUT JOBS
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Q1. What is the full form of ETL?
Ans. 
ETL stands for Extract, Transform, Load. It is a process used in data warehousing to extract data from various sources, transform it into a consistent format, and load it into a target database.
• ETL stands for Extract, Transform, Load

• Extract: Involves extracting data from various sources such as databases, applications, and files

• Transform: Involves cleaning, filtering, and transforming the extracted data into a consiste...read more
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Q2. ETL Full form is Exact, Transform, Load.
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