math & puzzles Online Quiz - 80

Enclosing a search query in double quotes tells Google to search for that exact phrase in that specific order. Full stops and spaces are treated as regular characters or delimiters and do not trigger a specific phrase search.

A modem (modulator-demodulator) converts digital signals from a computer into analog signals for transmission over telephone lines and vice versa. It does not generate electricity or serve as a primary data storage device.

MPEG (Moving Picture Experts Group) is a standard for lossy compression of video and audio. JPEG is a format for still images, and TXT is for plain text files. Therefore, MPEG is the only video format listed.

HTML (HyperText Markup Language) is the standard markup language used to create the structure and content of web pages. SQL is for database queries, and GWBASIC is an old programming language not used for modern web development.

A protocol is a standardized set of rules and conventions that govern communication between devices on a network. In the context of the internet, protocols like HTTP, FTP, and TCP/IP define how computers exchange data reliably. Option A refers to transfer time, which is a performance metric, not a communication standard. Option C refers to email attachment size, which is unrelated to protocols.

In binary computing standards, 1 Gigabyte (GB) is defined as 1024 Megabytes (MB), based on powers of two (2^10). While decimal systems use 1000, computer memory and storage typically follow the binary convention where 1024 is the standard multiplier.

Hypertext refers to text displayed on a computer that contains links to other text or pages. A clickable word or phrase that directs you to another location is a hyperlink, which is the core component of hypertext.

URL stands for Uniform Resource Locator, which is the formal technical term for a web address. HTTP is the protocol used to transfer data, and FTP is for file transfers. GRL is not a standard web term.

The 'Drafts' folder is specifically designed to store email messages that have been started but not yet sent. The Outbox holds messages waiting to be transmitted, and the Inbox holds received messages.

Bookmarking a page saves the URL to a list within your browser, allowing you to return to it easily without having to memorize the address. Refreshing just reloads the current page, and saving the page stores the content locally.

The 'Stop' button (typically represented by an X) in web browsers halts the loading of the current page. This is useful when a page is loading slowly, when you've changed your mind, or when you realize you don't need the full content. The Refresh button reloads the page, Go navigates to a URL, and Home takes you to your start page.

LOL is a widely used internet acronym that stands for 'Laughing Out Loud'. It is used to indicate amusement in informal digital communication. The other options are incorrect fabrications.

In internet etiquette (netiquette), writing in ALL CAPITAL LETTERS is conventionally interpreted as shouting. It's considered aggressive or rude because it's harder to read and visually loud. This convention dates back to early online communication systems and persists in modern messaging.

Email attachments are the most common vector for computer viruses. When a user opens an infected file attached to an email, the malicious code executes. Simply visiting a URL is generally safer, though not entirely risk-free.

The 'History' feature in a web browser maintains a chronological log of all websites visited. Bookmarks are for saved favorites, and the Edit menu is for text manipulation. History is the specific tool for tracking past browsing activity.

BCC stands for Blind Carbon Copy. When you put an address in the BCC field, that recipient receives the email, but their address is not visible to the primary recipient (To) or the CC recipients.

Scientists estimate that there are approximately 8.7 million species on Earth, with about 1.2-1.5 million species formally described and classified. The answer '1.5 million' represents the approximate number of described animal species. The other options are orders of magnitude too low.

Herbivores are animals that consume only plant material. They have specialized digestive systems adapted to breaking down cellulose found in plants. Carnivores eat meat, omnivores eat both plants and animals, and 'vegetarian' is a dietary choice for humans, not a biological classification for animals.

The giraffe is the tallest living terrestrial animal. Adult males can reach heights of 5.5 metres (about 18 feet). Elephants are the heaviest, but they do not reach the height of a giraffe.

The Quagga was a subspecies of the plains zebra that lived in South Africa and became extinct in the late 19th century. Raccoons, hippos, and anteaters are all extant (currently living) species.