Find Interview Questions for Xoriant Solutions Pvt Ltd

Right Answer:
Analyzing tables helps optimize query performance by updating statistics about the data distribution, which the SQL Server query optimizer uses to create efficient execution plans.

Right Answer:
User identification is the process of recognizing a user by their unique identifier, such as a username or ID. Authentication, on the other hand, is the process of verifying that the user is who they claim to be, typically through a password or other credentials.

Right Answer:
Exploratory Data Analysis (EDA) is the process of analyzing and summarizing datasets to understand their main characteristics, often using visual methods. It helps identify patterns, trends, and anomalies in the data before applying formal modeling techniques.

Right Answer:
A pivot table is a data processing tool that summarizes and analyzes data in a spreadsheet, like Excel. You use it by selecting your data range, then inserting a pivot table, and dragging fields into rows, columns, values, and filters to organize and summarize the data as needed.

Right Answer:
Regression analysis is a statistical method used to examine the relationship between one dependent variable and one or more independent variables. It is used to predict outcomes, identify trends, and understand the strength of relationships in data.

Right Answer:
Some common data visualization techniques include:

1. Bar Charts
2. Line Graphs
3. Pie Charts
4. Scatter Plots
5. Histograms
6. Heat Maps
7. Box Plots
8. Area Charts
9. Tree Maps
10. Bubble Charts

Right Answer:
Classification analysis is a data analysis technique used to categorize data into predefined classes or groups. It works by using algorithms to learn from a training dataset, where the outcomes are known, and then applying this learned model to classify new, unseen data based on its features. Common algorithms include decision trees, logistic regression, and support vector machines.

Right Answer:

An AMI (Amazon Machine Image) is a pre-configured template used to create virtual machines (EC2 instances) in AWS. It contains the operating system, application server, and applications needed to launch an instance.

Right Answer:

Availability Zones are isolated locations within a Region that provide high availability and fault tolerance. A Region is a geographical area that contains multiple Availability Zones, allowing for resource distribution and redundancy across different physical locations.

Right Answer:

An Elastic Load Balancer (ELB) is a service that automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, and IP addresses, to ensure high availability and reliability of applications.

Right Answer:

AWS Lambda is a serverless computing service that allows you to run code in response to events without provisioning or managing servers. It automatically scales and charges only for the compute time consumed.

Right Answer:

Auto Scaling is a feature in AWS that automatically adjusts the number of EC2 instances in a group based on demand, ensuring optimal performance and cost efficiency.