Birlasoft Interview Questions and Answers for Freshers

Optimizers are algorithms or tools that enhance performance by improving resource allocation and execution efficiency in various systems.

• Query Optimization: In databases, optimizers determine the most efficient way to execute a query, such as using indexes to speed up data retrieval.

• Compiler Optimization: Compilers optimize code during the compilation process to improve execution speed and reduce resource usage, l...read more

An activation function determines the output of a neural network node, introducing non-linearity to the model.

• Purpose: Activation functions help neural networks learn complex patterns by introducing non-linearities.

• Types: Common activation functions include Sigmoid, ReLU (Rectified Linear Unit), and Tanh.

• Sigmoid: Outputs values between 0 and 1, useful for binary classification problems.

• ReLU: Outputs the input dire...read more

TF-IDF is a statistical measure used to evaluate the importance of a word in a document relative to a collection of documents.

• Term Frequency (TF): Measures how frequently a term appears in a document. For example, if 'data' appears 5 times in a document of 100 words, TF = 5/100 = 0.05.

• Inverse Document Frequency (IDF): Measures how important a term is across a collection of documents. If 'data' appears in 10 out of...read more

var and const are variable declarations in JavaScript with different scopes and behaviors.

• var is function-scoped or globally scoped, while const is block-scoped.

• Example of var: function test() { var x = 10; if (true) { var x = 20; } console.log(x); } // Outputs 20

• Example of const: function test() { const y = 10; if (true) { const y = 20; } console.log(y); } // Outputs 10

• const must be initialized at the time of dec...read more

A C program to generate Fibonacci series

• Use a loop to calculate Fibonacci numbers

• Store the numbers in an array

• Print the Fibonacci series

I drive value for customers by prioritizing their needs, providing timely solutions, and ensuring their satisfaction.

• Understanding customer requirements and expectations

• Communicating effectively and promptly

• Taking ownership of issues and following through to resolution

• Seeking feedback and continuously improving processes

• Going above and beyond to exceed customer expectations

The .py extension is used for Python source code files, while py files can refer to any file with the py extension.

• The .py extension is commonly used for Python scripts and modules.

• py files can refer to any file with the py extension, including Python source code files, but also other types of files such as text files or data files.

• The .py extension is recognized by Python interpreters and can be executed directly...read more

Spark is faster than MapReduce due to in-memory processing and DAG execution model.

• Spark uses in-memory processing while MapReduce uses disk-based processing.

• Spark has DAG (Directed Acyclic Graph) execution model while MapReduce has Map and Reduce phases.

• Spark supports real-time processing while MapReduce is batch-oriented.

• Spark has a higher level of abstraction and supports multiple languages while MapReduce is l...read more