Maersk Senior Data Engineer Interview Questions and Answers

Q1. The interviewer asked about the projects that i have done.
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Q2. Tell me about some of the projects that you have done.
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Q1. Previous project discussion
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Q2. Sql amd python tabluea excel
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Q1. Your experience
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Q2. Where do you live and how much salary do you accept?
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Q1. Tell me about spark internal memory management?
Ans. 
Spark internal memory management involves allocating memory for storage, execution, and caching.
• Spark uses a unified memory management system that dynamically allocates memory between storage and execution.

• Memory is divided into regions for storage (cache) and execution (task memory).

• Spark also uses a spill mechanism to write data to disk when memory is full, preventing out-of-memory errors.

• Users can configure memory a...read more
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Q2. Difference between heap and non heap memory?
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Heap memory is used for dynamic memory allocation, while non-heap memory is used for static memory allocation.
• Heap memory is used for storing objects created at runtime, while non-heap memory is used for storing class files and method information.

• Heap memory is managed by garbage collector for automatic memory management, while non-heap memory is managed by the JVM.

• Examples of heap memory include objects created using ...read more
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Q1. Questions about kubernetes and dockerfile
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Q1. Questions about your past experience
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Q1. It was in general discussion round
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Q1. General discussion round
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Q1. About yourself what about your working?
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Q1. Data entry opretor logistics supply chain solution
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Q2. Received and secondry distbution
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Q3. Ricevied matiriali inbound
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Q4. Despatch materials outbound
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Despatch materials outbound involves preparing and sending out materials to customers or other locations.
• Organize materials for shipment

• Prepare shipping labels and documentation

• Coordinate with shipping carriers

• Track shipments to ensure timely delivery

• Communicate with customers regarding shipment status
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Opretion and logistics supply chain solution werehouse and data entry opretor

Q1. What is Transformer and it's type
Ans. 
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Transformers are used to increase or decrease the voltage in electrical power transmission and distribution systems.

• There are two main types of transformers: step-up transformers and step-down transformers.

• Step-up transformers increase the voltage, while step-down transformers decrease t...read more
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Q2. What is motor and it's type
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A motor is a device that converts electrical energy into mechanical energy. There are various types of motors.
• Motors are used in various applications such as fans, pumps, and vehicles.

• Types of motors include DC motors, AC motors, stepper motors, and servo motors.

• DC motors are commonly used in household appliances and electric vehicles.

• AC motors are used in industrial applications such as conveyor belts and compressors.

• ...read more
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Q3. Transmission line
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Q4. Plc (programable logics controller)
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Q5. Other question related electrical
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