Computer and Internet Technology Quiz

Vitamin A deficiency is a leading cause of preventable blindness in children, particularly night blindness (nyctalopia). Vitamin A is essential for the formation of rhodopsin, the pigment in rod cells that enables vision in low-light conditions. Deficiency also causes dry eyes (xerophthalmia) and can lead to complete blindness if untreated.

Beri-beri is caused by Vitamin B1 (thiamine) deficiency. There are two forms: wet beri-beri (cardiovascular) and dry beri-beri (nervous system). Thiamine is essential for carbohydrate metabolism and nerve function. The condition is still seen in populations with polished rice diets and in alcoholics with poor nutrition.

Mozilla Firefox has always been free and open-source, making it the most consistently free browser among the options. Netscape Navigator was free only for non-commercial use, while Internet Explorer was bundled with Windows but not standalone free. The term 'free internet browser' refers to browsers available at no cost to users.

Yahoo! indeed stands for 'Yet Another Hierarchical Officious Oracle'. The name was coined by founders Jerry Yang and David Filo in 1994, reflecting its early purpose as a hierarchical directory of web pages. This well-known expansion is a classic piece of internet trivia.

Archie (1990) is widely recognized as the first internet search engine, created by Alan Emtage at McGill University. It predated the World Wide Web and searched FTP archives. ARPANET was the network itself, not a search engine, while Internet Explorer and Bing came much later.

iGoogle was Google's personalized homepage service (2005-2013) that allowed users to customize their start page with widgets, news feeds, weather, and other content. The name 'iGoogle' followed the naming convention of Apple's 'i' products, denoting a personalized, individualized experience.

MPEG stands for Moving Picture Experts Group, which is a family of standards used for compressing audio and video data. The key words are "Moving" and "Experts" - not "modular" or "motivation". MPEG formats are commonly used for digital video and audio.

AVI stands for Audio Video Interleave, a multimedia container format introduced by Microsoft. The key elements are "Audio" and "Video" - both words appear correctly, and "interleave" means they're mixed together. It's not "automated" or an "interface".