Hitachi Systems Technical Engineer Interview Questions and Answers

Q1. Basic knowledge of your skills
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Q2. Scenario based questions.
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Q1. Scenario based questions
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Q2. SQL technical question.
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Q1. Salary Discussion, joining date negotiation and Joining Bonus.
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Q1. Tell us about yourself
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Q2. Lot of questions on SQL and Linux commands
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Q1. Tell us about yourself
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Q2. It was a manager round combined with some technical questions
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Q1. Introduce yourself, including what' s your roles and responsibility and what's your day to day task
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Q2. Given a scenario, suppose there is slowness in system, and there is no APM tool then how will you identify the issue and solve it.
Ans. 
Identify potential causes through system analysis, logs, and monitoring tools. Implement troubleshooting steps to resolve the issue.
• Analyze system performance metrics such as CPU usage, memory usage, disk I/O, and network traffic to identify bottlenecks.

• Check system logs for any error messages or warnings that could indicate the source of the slowness.

• Review application logs to see if there are any specific requests or...read more
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Q3. Question on thread dump, in what case it should be taken, how many thread dumps are required and at what interval.
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Q4. If there is slowness in system and you have thread dump, what analysis you will do from it
Ans. 
I would analyze the thread dump to identify any bottlenecks or issues causing the system slowness.
• Identify any threads that are in a blocked or waiting state

• Look for any threads consuming excessive CPU or memory

• Check for any deadlocks or resource contention issues

• Analyze the stack traces to pinpoint the root cause of the slowness
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Q5. Do study about all web and app server and also respective logs
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Q1. Mix of coding, theory and design questions
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Write a program on priority queue

Q1. Questions on network protocol
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Q2. Question on non-blocking socket
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Q3. Question on linked list
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Q1. Interview with cliient directly similar questions like round 2
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Q1. Builder design pattern in java
Ans. 
Builder design pattern is a creational design pattern used to construct complex objects step by step.
• Builder pattern separates the construction of a complex object from its representation.

• It allows the same construction process to create different representations of the object.

• Useful when there are multiple ways to construct an object or when the object creation process is complex.

• Example: StringBuilder in Java allows ...read more
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Q2. Docker, MQ series involved
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Q3. JOIN Query with country , emp name
Ans. 
JOIN query to retrieve country and employee name
• Use JOIN keyword to combine data from multiple tables

• Specify the columns to select from each table

• Use ON keyword to specify the relationship between the tables
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Q1. About the coding and resume questions
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Q1. Bond and salary package
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