Infosys Lead Interview Questions and Answers

Adapters are devices that allow different types of connectors or interfaces to be connected together.

• There are various types of adapters such as USB adapters, HDMI adapters, power adapters, etc.

• Adapters can also include converters that change the signal type or format, such as VGA to HDMI adapters.

• Some adapters are specific to certain devices or brands, like Apple Lightning to 3.5mm headphone jack adapters.

• Adapters can...read more

SQL operations include SELECT, INSERT, UPDATE, DELETE, JOIN, and more.

• SELECT: Retrieve data from a database

• INSERT: Add new records to a table

• UPDATE: Modify existing records in a table

• DELETE: Remove records from a table

• JOIN: Combine rows from two or more tables based on a related column

Authentication is the process of verifying the identity of a user or system before granting access to resources.

• Authentication can be achieved through passwords, biometrics, or security tokens.

• Examples include logging into a bank account with a password or using a fingerprint scanner on a smartphone.

• Multi-factor authentication (MFA) enhances security by requiring two or more verification methods.

• Single Sign-On (SSO) al...read more

Paging is a technique to divide large datasets into smaller, manageable chunks for efficient data retrieval.

• Define page size: Determine how many records to display per page (e.g., 10 records).

• Calculate total pages: Use total records divided by page size (e.g., 100 records / 10 = 10 pages).

• Implement navigation: Provide controls for users to navigate between pages (e.g., 'Next', 'Previous').

• Fetch data: Retrieve only the ...read more