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I applied via Job Portal and was interviewed in Sep 2023. There were 3 interview rounds.
Easy only so prepare well that's it
I use a combination of programming languages, tools, and frameworks to analyze and process large datasets.
Utilize programming languages like Python, Java, or Scala for data processing
Leverage tools like Hadoop, Spark, or Kafka for distributed computing
Implement frameworks like MapReduce or Apache Flink for data analysis
Use SQL or NoSQL databases for data storage and retrieval
Implemented a real-time data processing system using Apache Kafka and Spark for analyzing customer behavior.
Developed data pipelines to ingest, process, and analyze large volumes of data
Utilized Apache Kafka for real-time data streaming
Implemented machine learning algorithms for predictive analytics
Optimized data storage and retrieval for faster query performance
External tables are stored outside the database while internal tables are stored within the database.
External tables are created using the LOCATION clause to specify the data location.
Internal tables are created using the CREATE TABLE statement.
External tables can be accessed by multiple databases while internal tables are specific to a single database.
External tables are not managed by the database and can be deleted ...
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I applied via Referral and was interviewed before Jan 2024. There was 1 interview round.
Lineage tracks the history of data transformations, while DAG is a graph structure with nodes representing tasks and edges representing dependencies.
Lineage focuses on the history of data transformations, showing how data has been derived or modified.
DAG is a graph structure where nodes represent tasks and edges represent dependencies between tasks.
Lineage helps in understanding the data flow and ensuring data quality ...
I have utilized optimization techniques such as indexing, caching, and parallel processing in my projects.
Implemented indexing on large datasets to improve query performance
Utilized caching to store frequently accessed data and reduce load times
Implemented parallel processing to speed up data processing tasks
Cache is temporary storage used to store frequently accessed data for quick retrieval, while persistence refers to storing data permanently.
Cache is temporary and volatile, while persistence is permanent and non-volatile
Cache is typically faster to access than persistence
Examples of cache include browser cache, CPU cache, and in-memory cache systems like Redis
Examples of persistence include databases like MySQL, Postgr
TCS interview questions for designations
I applied via Naukri.com and was interviewed in Sep 2022. There were 2 interview rounds.
Hive metastore is a central repository that stores metadata for Hive tables, including schema and location.
Hive metastore is used to manage metadata for Hive tables.
It stores information about the schema, location, and other attributes of tables.
The metastore can be configured to use different databases, such as MySQL or PostgreSQL.
It allows for sharing metadata across multiple Hive instances.
The metastore can be acces...
Spark architecture is a distributed computing framework that consists of a cluster manager, a distributed storage system, and a processing engine.
Spark architecture is based on a master-slave architecture.
The cluster manager is responsible for managing the resources of the cluster.
The distributed storage system is used to store data across the cluster.
The processing engine is responsible for executing the tasks on the ...
Get interview-ready with Top TCS Interview Questions
I applied via Campus Placement and was interviewed before Aug 2023. There were 4 interview rounds.
General maths and English
Basic program coding
I applied via Walk-in and was interviewed before May 2023. There was 1 interview round.
Tuples are immutable and fixed in size, while lists are mutable and can change in size.
Tuples are created using parentheses, while lists are created using square brackets.
Tuples are faster than lists for iteration and accessing elements.
Tuples are used for heterogeneous data types, while lists are used for homogeneous data types.
I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.
Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
OOPs stands for Object-Oriented Programming System
Java is a class-based OOPs language
Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs
Objects have state and behavior
Java supports interfaces, which allow for multiple inheritance
Example: A car can be represented as an object wit...
Java solves machine dependency by using bytecode and virtual machine.
Java code is compiled into bytecode which is platform-independent
The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific
JVM translates bytecode into machine code for the specific platform
This allows Java code to run on any platform with a JVM installed
Example: A Java program compiled on Windows can run on Linux or Mac as
I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.
The medium level questions are present
There was no gd
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Numerical ability and logical reasoning followed by some coding mcqs
Printing 1 to 100 without for loop
Use recursion to print numbers from 1 to 99
Print 100 outside the recursion
Use a base case to stop recursion at 100
Some of the top questions asked at the TCS Big Data Engineer interview -
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