Computer Science

Format Painter in PowerPoint is used to copy the formatting of one object, text, or shape and apply the same formatting to another object. It helps maintain consistent design throughout the presentation.

F1 through F12 keys on a keyboard are known as Function keys. They perform specific tasks depending on the software or operating system, such as F1 for Help, F2 for renaming files, etc.

In Microsoft Word, footnotes, endnotes, and indexes are all inserted as fields, which are special elements that Word uses to manage dynamic content. These are not bookmarks, cross-references, or hyperlinks.

In Microsoft Word, Headers and Footers are inserted through the Insert menu/tab. This option allows users to add page numbers, dates, titles, and other repeating content at the top or bottom of pages.

Google was founded in 1998 by Larry Page and Sergey Brin at Stanford University in California, USA. It is headquartered in Mountain View, California, and operates as an American multinational technology company under Alphabet Inc.

4G mobile technology is designed to support high-speed data transmission for both voice calls and non-voice (data) services. This enables advanced features like full-motion video, high-speed internet, and video conferencing seamlessly.

A byte consists of 8 bits. Half of a byte is therefore 4 bits, which is known as a nibble (sometimes spelled nybble). This term is commonly used in computing and digital electronics.

FORTRAN is one of the oldest high-level programming languages. The name FORTRAN is derived from 'Formula Translation'. It was developed by IBM in the 1950s primarily for scientific and engineering calculations.

GUI stands for Graphical User Interface. It is a type of software interface that allows users to interact with computers or devices using graphical elements like icons, windows, and menus instead of text-based commands.

Good passwords should contain a combination of alphanumeric characters (letters and numbers) and ideally also include symbols to improve security. Using only alphabets or only numbers makes passwords easier to guess and less secure. Modern password guidance emphasizes length, uniqueness, and complexity including letters, numbers, and symbols for strong passwords. Therefore, the best choice among the given options is 'Alphanumeric characters' which implies a mix of letters and numbers, though ideally symbols should also be included.