Used by a search engine to find information.

1. Web crawling and web spiders

2. Indexing

1. MS to monitor all changes in the document. Track Changes features are used in Word 2010.

2. Track Changes is a way for Microsoft Word to keep track of changes you make to your text.

To delete a sentence from a document, you would use highlight and delete.

1. A web browser is software used to view websites.

2. When a user requests a web page from a particular website, the browser retrieves its files from the web server and then displays that page on the user's screen.

3. Browsers are used on multiple devices, including desktops, laptops, tablets, and smartphones.

4. Some of the famous internet browsers in the world are – Google Chrome, Microsoft Edge, Microsoft Internet Explorer, Mozilla Firefox, Opera, Apple Safari, and Amazon Silk.

There is a table in MS Excel which contains numbers from 0 to 10. If you have to add numbers greater than 5 in that table, then the formula =SUMIF (A2:A8,”>0″) is suitable.

1. Mail Merge is a facility in MS Word using multiple or different letters, invitation cards, and personal letters that can be sent to many people in a minimum time.

2. This feature is more useful in a situation when a user has to deliver a letter or invitation card to thousands of people.

3. We can understand mail merge with an example. Suppose we have to send a letter or card to 1000 different people with their names and addresses, in that case, we will have to copy and paste that letter 1000 times for all those people, and then a lot of time will be wasted. A database will be created which will contain the names, addresses and other information of all the recipients. This database file is in MS Excel or MS Access.

1. We live in an eCommerce-centric world where all types of business models are growing at a rapid pace.

2. This model involves electronic transactions between two customers. Typically, they transact through a third party that provides a platform to those two customers. Websites selling second-hand items are examples of the C2C eCommerce model.

1. Icons are small pictures that represent a program, folder, or program function and are displayed in the user's user interface when they are double-clicked.