The search engine performs the following tasks-

1. Web crawling: Search engines search all web pages on the web using a crawler. A crawler is a program that finds new web pages by following links on the web.

2. Indexing: Once the crawler finds all the web pages, the search engine indexes them in a database. The index contains information for each web page, such as title, URL, and content.

3. Searching: When a user types a search query, the search engine searches all the web pages in the index that may be related to the query.

Actually, a nibble consists of 4 bits, not 3. In computing, a nibble is a unit of data that consists of 4 bits, which can represent 16 different values (2^4). Each nibble can be expressed as a single hexadecimal digit (0 to F, where F represents 15 in decimal) and is half of a byte, which consists of 8 bits. So, 4 bits make up one nibble.

Both the statements are correct-

Statement 1: Using the 'Shift + Delete' keyboard keys deletes the file/folder permanently and it is also not available in Recycle Bin.

Statement 2: Windows 10 allows individual user accounts to have unique settings and preferences (such as the desktop background screensaver) for each user.

Ink-jet printers or band printers are classified based on the printing method.

Laser printer resolution is specified in terms of DPI, which stands for Dots Per Inch. DPI refers to the number of dots a printer can place within one square inch of space on a printed page. Higher DPI values generally result in sharper and more detailed printouts. Laser printers typically offer higher DPI resolutions, such as 600 DPI or 1200 DPI, leading to high-quality text and graphics output.

Actually, in MS PowerPoint (and most other word processing applications), the key combination to move down one paragraph is "Enter". Pressing the "Enter" key moves the cursor to the next paragraph. If you want to move the cursor down one line within the same paragraph, you can use the "Down Arrow" key. There isn't a specific default key combination to move down one paragraph in PowerPoint; it's more about using the "Enter" key to start a new paragraph.

1. The horizontal lines displayed in the plot area of a chart in MS Excel 2010 are called gridlines.

2. Types of Grid Lines in MS Excel 2010 –

- Main grid lines: These show the key values of the data ranges. They have usually displayed every 5 or 10 values.

Secondary grid lines: These show the intervals between data ranges. They usually appear after every 1 or 2 values.