BIZ-METRIC INDIA Interview Questions and Answers

Find the second largest string from a given sentence

• Split the sentence into an array of strings

• Sort the array based on string length

• Return the second last element in the sorted array

AWS CloudFront is a content delivery network (CDN) service, while AWS CloudFormation is an infrastructure as code service.

• CloudFront is used to deliver content to end users with low latency and high data transfer speeds.

• CloudFormation is used to automate the deployment of infrastructure resources in a repeatable and predictable manner.

• CloudFront is a CDN service that caches content at edge locations to reduce latency, while CloudFormation is a service that allows you to defin...read more

To improve performance in React JS, optimize rendering, minimize re-renders, use virtualization, lazy loading, code splitting, and memoization.

• Optimize rendering by using shouldComponentUpdate or React.memo for functional components

• Minimize re-renders by using PureComponent or memoization techniques like useMemo or useCallback

• Use virtualization for long lists or tables to render only the visible items

• Implement lazy loading for components or data that are not immediately neede...read more

Declare trigger is used to execute a set of actions when a specific event occurs, while declare index is used to improve query performance by creating an index on a table column.

• Declare trigger is used to perform actions like updating other tables or sending notifications when a specific event occurs.

• Declare index is used to speed up query performance by creating an index on a column in a table.

• Triggers are executed in response to events like insert, update, or delete operati...read more

Finally is a block of code that always executes, while Finalize is a method used for cleanup before an object is garbage collected.

• Finally block is used in exception handling to ensure certain code is always executed, regardless of whether an exception is thrown or not.

• Finalize method is called by the garbage collector before an object is reclaimed.

• Finally block is used in try-catch-finally blocks, while Finalize method is a part of the Object class.

• Example: try { // code } c...read more

Designing a product page for an ecommerce website

• Include high-quality images of the product from different angles

• Provide detailed product description including features, specifications, and dimensions

• Include customer reviews and ratings for social proof

• Add related products or accessories for upselling opportunities

• Include prominent 'Add to Cart' and 'Buy Now' buttons for easy purchasing

Difference between @requestbody and @responsebody annotations in Spring MVC

• The @RequestBody annotation is used to bind the HTTP request body to a method parameter in Spring MVC controller

• The @ResponseBody annotation is used to bind the return value of a method to the HTTP response body in Spring MVC

• Example: @RequestBody User user - binds the request body to a User object parameter

• Example: @ResponseBody String hello() - binds the return value of hello() method to the response ...read more

Program to find unique strings in an array of strings

• Create a set to store unique strings

• Iterate through the array and add each string to the set

• Return the set of unique strings