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Maersk Line Interview Questions and Answers

Updated 7 Aug 2024

Q1. How does spark join operation happens.

Ans.

Spark join operation combines two datasets based on a common key.

  • Join operation is performed on two RDDs or DataFrames.

  • The common key is used to match the records in both datasets.

  • There are different types of join operations like inner join, outer join, left join, right join.

  • Join operation is an expensive operation and requires shuffling of data across the cluster.

  • Example: val joinedData = data1.join(data2, data1("key") === data2("key"))

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Q2. Describe instances when have pirates on board

Ans.

Instances of pirates on board are rare but can be dangerous and require immediate action.

  • Pirates may attempt to hijack the ship for ransom or theft

  • Crew and passengers may be taken hostage or harmed

  • Security protocols and emergency procedures must be followed to ensure safety

  • Authorities and naval forces may be contacted for assistance

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Q3. What are the rules of master marine

Ans.

Master Marine rules are guidelines and regulations that must be followed by technicians working in the marine industry.

  • Master Marine rules include safety protocols for working on boats and ships.

  • Technicians must adhere to environmental regulations when performing maintenance or repairs.

  • Proper documentation and record-keeping are essential in compliance with Master Marine rules.

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Q4. Different rules for sailing Geography (oceans)

Ans.

Different rules for sailing depend on the geography of the oceans.

  • Different regions have specific regulations and guidelines for sailing.

  • Some areas may have restrictions on speed limits, navigation routes, or environmental protection measures.

  • Examples include the International Regulations for Preventing Collisions at Sea (COLREGs) and the Polar Code for Arctic and Antarctic waters.

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Q5. Example of onground projects

Ans.

As a Vendor Operations Manager, I have led several onground projects such as...

  • Organizing vendor meetups to improve communication and collaboration

  • Implementing a new inventory management system to streamline operations

  • Launching a pilot program to test a new vendor onboarding process

  • Coordinating with local authorities to obtain necessary permits for a new warehouse

  • Leading a team to conduct a physical inventory count and reconcile discrepancies

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Q6. Explain project life cycle

Ans.

Project life cycle is the series of phases a project goes through from initiation to completion.

  • Initiation: Define project goals, scope, and stakeholders.

  • Planning: Create a detailed project plan, schedule, and budget.

  • Execution: Implement the project plan and deliver the project deliverables.

  • Monitoring and Controlling: Track project progress, manage changes, and ensure quality.

  • Closing: Finalize all project activities, hand over deliverables, and evaluate project success.

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Q7. Explain refractive index?

Ans.

Refractive index is a measure of how much light is bent when passing through a medium.

  • Refractive index is the ratio of the speed of light in a vacuum to the speed of light in a specific medium.

  • It determines how much light is bent or refracted when passing from one medium to another.

  • Higher refractive index means light travels slower in that medium.

  • Common examples include glass having a refractive index of around 1.5 and water around 1.33.

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Q8. Explain OTC cycle

Ans.

OTC cycle refers to the process of over-the-counter trading of securities without the need for a centralized exchange.

  • OTC trading involves direct transactions between buyers and sellers

  • Securities traded in OTC markets are not listed on formal exchanges

  • OTC markets provide liquidity for securities that may not meet exchange listing requirements

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Q9. Explain mirage ?

Ans.

Mirage is an optical phenomenon where light is refracted to produce a displaced image of distant objects.

  • Mirage occurs due to the bending of light rays in layers of air at different temperatures.

  • It is commonly seen in deserts, where the hot ground heats the air above it, causing light to bend and create false images of water or objects.

  • Mirages can also occur on roads during hot days, making it appear as if there is water on the road surface.

  • The displaced image in a mirage is ...read more

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