TCS Interview Questions and Answers

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"))

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

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.

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.

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

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.

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.

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