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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 Referral and was interviewed in Nov 2020. There were 5 interview rounds.
I appeared for an interview before Jul 2021.
Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were of the same class.
Polymorphism is achieved through method overriding and method overloading.
Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.
Method overloading is when a class has two or more methods with the ...
Dependency Injection is a design pattern where the dependencies of an object are injected into it rather than created within it.
It helps in achieving loose coupling between objects
It makes testing easier as dependencies can be mocked or stubbed
There are three types of Dependency Injection - Constructor Injection, Setter Injection, and Interface Injection
Example: In a web application, the database connection object can ...
Garbage Collection in .Net automatically manages memory by freeing up unused objects.
Garbage Collector runs in the background and periodically checks for unused objects.
It frees up memory by deallocating objects that are no longer being used.
GC can be configured using different modes like Server, Workstation, Concurrent, etc.
GC can also be manually triggered using GC.Collect() method.
GC.SuppressFinalize() method can be...
Some of the top questions asked at the TCS Big Data Engineer interview -
based on 6 interviews
1 Interview rounds
based on 49 reviews
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