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.

Used by a search engine to find information.

1. Web crawling and web spiders

2. Indexing

1. GUI or graphic user interface has nothing to do with graphic files because it is a type of interface that interacts through visual indicators such as graphical icons and secondary notation, unlike text-based interfaces, type command labels or text navigation. Provides facility to do.

All statements are correct

Statement 1: Optical fiber uses glass (or plastic) threads (fibres) to transmit data.

Statement 2: In twisted pair wire, two wires are twisted around each other to reduce crosstalk and electromagnetic induction.