1. Android OS is a mobile operating system based on a modified version of the Linux kernel.

2. It is an open-source software, primarily designed for touchscreen mobile devices like smartphones and tablets.

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.

1. The file extension in PowerPoint 2010 is .pptx.

2. It is an open XML (Open XML) format used in PowerPoint 2007 and later versions.

3. .pptx files can also be opened with other presentation software, such as OpenOffice Impress, Google Slides, and Apple Keynote.

1. What is the Shift + F3 shortcut key used in MS Excel 2010 to insert the insert function?

2. In the Function window, you can see all the functions available in Excel.

1. In MS PowerPoint, CTRL+M is a shortcut key used to insert a blank slide after the currently selected slide.

2. MS PowerPoint is a presentation program used to display data with the use of pictures, graphs, etc. in the form of slides.

3. It was created by Robert Gaskins and Dennis Austin.

The types of attempts made by individuals to obtain confidential information by misrepresenting their identity are commonly referred to as "Phishing Scams." Phishing scams involve sending deceptive emails, messages, or websites that appear to be from a trustworthy source, such as a bank or government agency. These messages typically request sensitive information like passwords, credit card numbers, or social security numbers, with the intention of tricking individuals into revealing their confidential data. Phishing scams can also involve phone calls and text messages, and they often aim to exploit people's trust in order to commit fraud or identity theft.

1. Full form of IRCTC is Indian Railway Catering and Tourism Corporation.

2. The website https://www.irctc.co.in belongs to Indian Railways.

3. IRCTC has revolutionized the lives of the common man traveling by Indian Railways.

4. IRCTC online ticket booking system is a boon for the common man, empowering him through technology.