Pyome Infra Solutions Interview Questions and Answers

Abstract class can have implementation while interface only has method signatures.

• Abstract class can have constructors while interface cannot.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract class can have non-public members while interface only has public members.

• Abstract class is used for creating a base class while interface is used for implementing a contract.

• Example of abstract class: Animal with abstract method 'makeSound'....read more

The core element of On-Page SEO is optimizing website content and HTML source code to improve search engine rankings.

• Keyword optimization in title tags, meta descriptions, and headers

• Quality content creation with relevant keywords

• Optimizing images with alt text and file names

• Internal linking to improve site structure and navigation

Node.js uses an event-driven, non-blocking I/O model to handle concurrent activity in a single-threaded environment.

• Node.js uses an event loop to handle I/O operations asynchronously.

• Callbacks are used to handle events and execute code when an event occurs.

• Node.js also uses worker threads to handle CPU-intensive tasks in parallel.

• The single-threaded nature of Node.js allows for efficient use of system resources.

• Node.js also provides modules like cluster to enable multi-proces...read more

CWV, or Core Web Vitals, are a set of metrics that measure the user experience on a website.

• CWV help in understanding how fast a website loads, how quickly it becomes interactive, and how stable it is as it loads.

• Google uses CWV as a ranking factor for search results, making it important for SEO.

• Improving CWV can lead to better user engagement, higher conversion rates, and improved overall performance of a website.

setTimeout and setImmediate are async functions used to delay the execution of code.

• setTimeout delays the execution of a function by a specified amount of time in milliseconds.

• setImmediate schedules a function to be executed in the next iteration of the event loop.

• Other async functions include setInterval, process.nextTick, and Promise.then.

• These functions are useful for handling time-consuming tasks without blocking the main thread.