Domains begins on hy

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hydrological hydrologically hydrologists hydrology hydrolysis hydromagnetic hydromechanics hydrophobia hydrophobic hydroponically hydrosphere hydrostatic hydrostatics hydrothermal hydrous hydroxide hydroxides hyena hyenas hygiene hygienic hygienically hygienist hygienists hygroscopic hymen hymens hymn hymnal hymnbook hymns hype hyperactive hyperactivity hyperbola hyperbolas hyperbole hyperbolic hyperboloid

hyperboloids hypercholesterolaemia hypercube hypercubes hyperfine hyperinflation hypermarket hypermarkets hyperplane hyperplanes hypersensitive hypersensitiveness hypersensitivity hypersonic hyperspace hypersphere hypertension hypertext hypertonic hyperventilated hyperventilating hyperventilation hyphen hyphenate hyphenated hyphenates hyphenating hyphenation hyphenations hyphened hyphens hypnosis hypnotherapists hypnotherapy hypnotic hypnotically hypnotise hypnotised hypnotises

hypnotising hypnotism hypnotist hypochondria hypochondriac hypochondriacal hypochondriacs hypocrisies hypocrisy hypocrite hypocrites hypocritical hypocritically hypodermic hypoglycaemia hypoglycaemic hypotension hypothalamus hypothermia hypotheses hypothesis hypothesise hypothesised hypothesiser hypothesises hypothesising hypothetical hypothetically hypoxia hyssop hysterectomy hysteresis hysteria hysteric hysterical hysterically hysterics

What is DNS (Domain Name System)?

The domain name system (DNS) stores and associates many types of information with domain names, but most importantly, it translates domain names (computer hostnames) to IP addresses. It also lists mail exchange servers accepting e-mail for each domain. In providing a worldwide keyword-based redirection service, DNS is an essential component of contemporary Internet use.

Useful for several reasons, the DNS pre-eminently makes it possible to attach easy-to-remember domain names (such as "wikipedia.org") to hard-to-remember IP addresses (such as 66.30.200.105). Humans take advantage of this when they recite URLs and e-mail addresses. In a subsidiary function, the domain name system makes it possible for people to assign authoritative names without needing to communicate with a central registrar each time. From Wikipedia, the free encyclopedia