please answer it's urgent please
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please answer it's urgent please
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Pls, MARK AS BRAINLIEST, I did the best to give the answer.
1. Information retrieval (IR) is the activity of obtaining information system resources that are relevant to an information need from a collection of those resources. Searches can be based on full-text or other content-based indexing. Web search engines are the most visible IR applications.
2.E-banking is a product designed for the purposes of online banking that enables you to have easy and safe access to your bank account. E-banking is a safe, fast, easy and efficient electronic service that enables you access to bank account and to carry out online banking services, 24 hours a day, and 7 days a week.
3.Online shopping is a form of electronic commerce which allows consumers to directly buy goods or services from a seller over the Internet using a web browser. When an online store is set up to enable businesses to buy from another businesses, the process is called business-to-business (B2B) online shopping.
4.E - reservation also known as electronic reservation refers to making the appointments online, which means by using the internet. A person can only check the availability of seats in a bus, ferry or aircraft by using E- reservation
5. E-group is a feature in many social network services which allows users to create, post, comment to and read from their own interest- and niche-specific forums, often within the realm of virtual communities