Fiserv Interview Questions and Answers

A configuration store management system to store and manage application configurations.

• Use a centralized database to store configuration data

• Implement version control to track changes and rollback if needed

• Provide access control to limit who can modify configurations

• Support different formats for configuration data (e.g. JSON, YAML)

• Include an API for applications to retrieve configurations

Designing a payment system involves creating a secure and efficient platform for processing transactions.

• Implement secure payment gateways to handle transactions

• Include multiple payment options such as credit/debit cards, digital wallets, and bank transfers

• Ensure compliance with PCI DSS standards for data security

• Implement fraud detection mechanisms to prevent unauthorized transactions

• Provide users with transaction history and receipts for transparency

I closely align with values related to Bookings such as accuracy, timeliness, and transparency.

• Accuracy in recording and reporting bookings

• Timeliness in updating booking information

• Transparency in communicating booking details to stakeholders

Rotate array by d places

• Create a temporary array to store elements to be rotated

• Shift elements in the original array to the left by d places

• Copy elements from the temporary array to the original array at the end

Cross charges refer to the allocation of costs or expenses from one department or entity to another.

• Cross charges are used to distribute costs fairly among different departments or entities.

• They help in accurately reflecting the true cost of goods or services provided.

• Examples include allocating IT costs to different business units based on their usage, or charging marketing expenses to specific product lines.

• Cross charges are often based on predetermined allocation methods o...read more