10+ Equifax Interview Questions and Answers

The question is asking for the current time and the angles formed by the hour and minute hands on a clock.

• The angle between the hour and minute hands of a clock can be calculated using the formula: angle = |(30*hour - (11/2)*minutes)|

• At 3:00, the angle between the hour and minute hands is 90 degrees.

• At 6:00, the angle between the hour and minute hands is 180 degrees.

• At 9:00, the angle between the hour and minute hands is 90 degrees.

CloudFormation and Terraform are both infrastructure as code tools, while blue-green release management is a deployment strategy.

• CloudFormation is a service provided by AWS for creating and managing AWS resources using templates written in JSON or YAML.

• Terraform is an open-source tool by HashiCorp that allows you to define and provision infrastructure using a declarative configuration language.

• Blue-green deployment is a strategy where you have two identical production environ...read more

Docker is a platform for developing, shipping, and running applications using containers. Images are templates for containers, multistage builds optimize Dockerfiles, and Terraform state backend stores infrastructure state.

• Docker is a platform that allows developers to package applications and their dependencies into containers for easy deployment and scalability.

• Images are read-only templates used to create containers. They include the application code, runtime, libraries, a...read more

Tuples are immutable sequences of elements. A string can be converted to a tuple using the tuple() function.

• Tuples are similar to lists but are immutable

• Elements of a tuple are enclosed in parentheses ()

• A string can be converted to a tuple using the tuple() function

• Each character in the string becomes an element in the tuple

Left join is a type of join operation in SQL that returns all the rows from the left table and matching rows from the right table.

• Left join is performed using the 'left join' keyword in SQL

• In Python, left join can be performed using the 'merge' function from the pandas library

• Syntax: pd.merge(left_dataframe, right_dataframe, how='left', on='key_column')

• Example: pd.merge(df1, df2, how='left', on='id')

Inner join returns only the rows that have matching values in both tables, while left join returns all rows from the left table and the matched rows from the right table.

• Inner join: returns rows where there is a match in both tables

• Left join: returns all rows from the left table and the matched rows from the right table

• Example: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id

• Example: Left join - SELECT * FROM table1 LEFT JOIN table2 ON table1.id = ...read more

Mutating tables refer to tables that are being modified by an ongoing transaction.

• Mutating tables occur when a trigger or a stored procedure tries to read or modify a table that is already being modified by the same transaction.

• This can lead to errors like ORA-04091: table is mutating, trigger/function may not see it.

• To avoid mutating table errors, you can use autonomous transactions, compound triggers, or row-level triggers.

• For example, if a trigger tries to update a table t...read more

Managing managers involves clear communication, setting expectations, providing support, and building trust.

• Establish clear communication channels with managers to ensure alignment on goals and expectations.

• Set clear expectations for performance and provide regular feedback to help managers improve.

• Provide support and resources to help managers succeed in their roles.

• Build trust by being transparent, fair, and consistent in your interactions with managers.

• Encourage open commu...read more

Equifax can make profit by offering credit monitoring services, selling data analytics to businesses, and providing identity theft protection.

• Offering credit monitoring services to individuals and businesses

• Selling data analytics to businesses for targeted marketing

• Providing identity theft protection services to consumers

• Charging fees for credit reports and credit scores