{"id":3351,"date":"2021-05-18T14:23:00","date_gmt":"2021-05-18T12:23:00","guid":{"rendered":"https:\/\/www.wifivmhd.cz\/nepostradatelna-wi-fi-aneb-13-veci-ktere-jste-o-ni-mozna-ani-nevedeli\/"},"modified":"2025-04-01T15:23:32","modified_gmt":"2025-04-01T13:23:32","slug":"nepostradatelna-wi-fi-alebo-13-veci-ktore-ste-o-nej-mozno-ani-nevedeli","status":"publish","type":"post","link":"https:\/\/www.wifivmhd.cz\/sk\/nepostradatelna-wi-fi-alebo-13-veci-ktore-ste-o-nej-mozno-ani-nevedeli\/","title":{"rendered":"Nepostr\u00e1date\u013en\u00e1 Wi-Fi alebo 13 vec\u00ed, ktor\u00e9 ste o nej mo\u017eno ani nevedeli"},"content":{"rendered":"\n
Pre\u010do sa Wi-Fi hovor\u00ed Wi-Fi a ako to cel\u00e9 funguje? \u010co vlastne o nej vieme? Pre\u010d\u00edtajte si p\u00e1r faktov zo z\u00e1kulisia tohto \u0161ikovn\u00e9ho zariadenia, ktor\u00e9 sa za roky svojho p\u00f4sobenia stalo nepostr\u00e1date\u013enou s\u00fa\u010das\u0165ou n\u00e1\u0161ho ka\u017edodenn\u00e9ho \u017eivota.<\/p>\n\n\n\n
Wi-Fi je tu u\u017e 30 rokov!<\/strong><\/h3>\n\n\n\n
Verili by ste, \u017ee tento \u0161ikovn\u00fd vyn\u00e1lez za\u017eil svoj hviezdny boom u\u017e v septembri roku 1990? \u00c1no, \u00e1no, od svojho v\u00fdvoja je tu s nami fakt u\u017e vy\u0161e 30 rokov.<\/p>\n\n\n\n
2.Meno nie je podstatn\u00e9, ale\u2026<\/strong><\/h3>\n\n\n\n
S nie pr\u00edli\u0161 chyt\u013eav\u00fdm \u0161tartovac\u00edm n\u00e1zvom IEEE 802.11, ktor\u00fd odkazuje na s\u00fabor \u0161tandardov a definuje komunik\u00e1ciu pre bezdr\u00f4tov\u00e9 miestne siete, to chcelo zmenu, to mus\u00edte uzna\u0165. Jednoducho nie\u010do zapam\u00e4tate\u013en\u00e9, jednoduch\u00e9. A tak v roku 1999 prich\u00e1dzaj\u00fa v\u00fdvoj\u00e1ri na trh s nov\u00fdm n\u00e1zvom, ktor\u00fd m\u00e1me u\u017e za tie roky zakorenen\u00fd v pam\u00e4ti ako Wi-Fi (pozn. nejedn\u00e1 sa o skratku Wireless Fidelity). Novinkou je, \u017ee p\u00f4vodn\u00fd v\u00fdraz s poml\u010dkou postupom \u010dasu v hovorovej re\u010di ustupuje. M\u00e1te radi Wi-Fi alebo ste fan\u00fa\u0161ikom WiFi? Nap\u00edsan\u00e9 tak \u010di tak, ani jedno nie je zle!<\/p>\n\n\n\n
3.\u00a0Na svete je u\u017e viac ako 400 mili\u00f3nov zariaden\u00ed Wi-Fi!<\/strong><\/h3>\n\n\n\n
Ku koncu roka 2016 bolo celosvetovo v obehu viac ako 90 m\u00ed\u013e. Wi-Fi zariadenie. S ka\u017ed\u00fdm prib\u00fadaj\u00facim rokom a s v\u00fdvojom technol\u00f3gi\u00ed sa postupne dost\u00e1vame k neuverite\u013enej hodnote cez 400 m\u00ed\u013e. hotspotov a do roku 2022 odhady o\u010dak\u00e1vaj\u00fa e\u0161te o 10 m\u00ed\u013e. viac! Uff, to u\u017e je skuto\u010dne gigantick\u00e9 \u010d\u00edslo!<\/p>\n\n\n\n<\/figure>\n\n\n\n
Wi-Fi technol\u00f3gia funguje na princ\u00edpe r\u00e1diov\u00fdch v\u013an, ktor\u00e9 vyu\u017e\u00edva na prenos inform\u00e1ci\u00ed z jedn\u00e9ho zariadenia do druh\u00e9ho. V\u010faka tomu m\u00f4\u017eu na\u0161e po\u010d\u00edta\u010de a \u010fal\u0161ie pr\u00edstroje fungova\u0165 na internete bez k\u00e1blov. Proste komfort na nezaplatenie!<\/p>\n\n\n\n<\/figure>\n\n\n\n
5. Wi-Fi je vysoko senzit\u00edvny na ru\u0161iv\u00e9 elementy<\/strong><\/h3>\n\n\n\n
Nie je ni\u010d viac frustraj\u00faceho, ne\u017e ke\u010f sledujeme zauj\u00edmav\u00fd online obsah alebo streamujeme film a vypadne Wi-Fi. OMG! Pokles sily sign\u00e1lu m\u00f4\u017ee by\u0165 sp\u00f4soben\u00fd interferenciou. To znamen\u00e1, \u017ee sa r\u00e1diov\u00e9 vlny z Wi-Fi stretn\u00fa s in\u00fdmi r\u00e1diov\u00fdmi vlnami na podobn\u00fdch frekvenci\u00e1ch a kolaps je tu!<\/p>\n\n\n\n
Pri tak obrovskom mno\u017estve vyu\u017e\u00edvan\u00fdch Wi-Fi zariaden\u00ed sa ani nie je \u010domu divi\u0165. \u010cast\u00fdmi zdrojmi ru\u0161enia m\u00f4\u017eu by\u0165 chytr\u00e9 TV, mikrovlnn\u00e9 r\u00fary, mobiln\u00e9 telef\u00f3ny, zariadenia s Bluetooth alebo dokonca akv\u00e1rium! V\u017edy z\u00e1le\u017e\u00ed na materi\u00e1li prek\u00e1\u017eky, ke\u010f napr\u00edklad kov, na rozdiel od dreva, je siln\u00fdm naru\u0161ite\u013eom sign\u00e1lu Wi-Fi!<\/p>\n\n\n\n
6<\/strong>. Eliminujte ru\u0161enie a \u201eru\u0161i\u010de\u201c Wi-Fi odpojte<\/strong><\/h3>\n\n\n\n
Ak chcete ma\u0165 hladk\u00fd sign\u00e1l bez ru\u0161enia, sk\u00faste vypn\u00fa\u0165 a odpoji\u0165 TV, tla\u010diarne, detsk\u00e9 pest\u00fanky a nezabudnite na mikrovlnku! \u010eal\u0161ou mo\u017enos\u0165ou je tie\u017e zmena kan\u00e1lov v bezdr\u00f4tovej sieti alebo jednoducho a jednoducho presu\u0148te Wi-Fi bli\u017e\u0161ie k PC.<\/p>\n\n\n\n
Vedeli ste, \u017ee najv\u00e4\u010d\u0161\u00edm blok\u00e1torom sign\u00e1lu je voda? Pokia\u013e teda sed\u00edte medzi routerom a po\u010d\u00edta\u010dom, va\u0161e telo tvoren\u00e9 v 75% z vody m\u00f4\u017ee v\u00fdrazne ovplyvni\u0165 silu sign\u00e1lu Wi-Fi. Ale st\u00e1le je to ten lep\u0161\u00ed variant, ne\u017e keby bolo va\u0161e telo z kovu, tam by bol pokles sign\u00e1lu ove\u013ea cite\u013enej\u0161\u00ed.<\/p>\n\n\n\n
Routery s ant\u00e9nou vy\u017earuj\u00fa vysokofrekven\u010dn\u00fa energiu, ktor\u00e1 vyzer\u00e1 ako donut. Ide samozrejme o pomyseln\u00fd donat, ale lahod\u00ed to oku aj uchu, \u010do hovor\u00edte?<\/p>\n\n\n\n
9. Frekvencia Wi-Fi sa l\u00ed\u0161i<\/strong><\/h3>\n\n\n\n
Wi-Fi be\u017ene vysiela na frekvencii 2,4 GHz alebo 5 GHz, \u010do je ove\u013ea vy\u0161\u0161ia frekvencia ako pre mobiln\u00fd prenos. V praxi to znamen\u00e1, \u017ee \u010d\u00edm vy\u0161\u0161ia frekvencia, t\u00fdm viac prenesen\u00fdch d\u00e1t. \u010co si teda vyberte, v\u00e4\u010d\u0161\u00ed dosah alebo viac prenesen\u00fdch d\u00e1t?<\/p>\n\n\n\n
10. Wi-Fi d\u00f4le\u017eitej\u0161ie ako ra\u0148ajky<\/strong><\/h3>\n\n\n\n
Ke\u010f u\u017e sme spomenuli tie \u0161i\u0161ky a v\u00fdhody Wi-Fi, dali by ste prednos\u0165 dobr\u00fdm ra\u0148ajk\u00e1m alebo Wi-Fi pripojeniu? Americk\u00fd hotelov\u00fd re\u0165azec Red Roof Inn vykonal v\u00fdskumn\u00e9 vy\u0161etrovanie, kde oslovil 800 obchodn\u00fdch cestuj\u00facich s ot\u00e1zkou, ak\u00e9 d\u00f4le\u017eit\u00e9 je pre nich konkr\u00e9tne vybavenie hotela. Z\u00e1very uk\u00e1zali, \u017ee Wi-Fi na izbe je pre cestuj\u00facich ove\u013ea d\u00f4le\u017eitej\u0161ie ako komfortn\u00e1 poloha parkovania \u010di dokonca ra\u0148ajky zadarmo! 80 % z osloven\u00fdch dokonca uviedlo, \u017ee bezplatn\u00e1 Wi-Fi pre nich predstavuje obrovsk\u00fa pridan\u00fa hodnotu slu\u017eby.<\/p>\n\n\n\n<\/figure>\n\n\n\n
11. Viete, \u017ee existuje viacero druhov Wi-Fi?<\/strong><\/h3>\n\n\n\n
O p\u00f4vodnom ozna\u010den\u00ed 802.11 sme sa u\u017e zmienili, ale to iba jedna z verzi\u00ed Wi-Fi. V skuto\u010dnosti existuje e\u0161te nieko\u013eko \u010fal\u0161\u00edch variantov. Origin\u00e1l je z roku 1997 a u\u017e sa nepou\u017e\u00edva, ale odvtedy postupne vznikli \u0161tandardy 802.11b, 802.11a, 802.11g, 802.11n, 802.11ac, 802.11ad.<\/p>\n\n\n\n
\u010cert, aby sa v takom mno\u017estve typov vyznal! Faktom v\u0161ak je, \u017ee nov\u0161ie verzie Wi-Fi s\u00fa sp\u00e4tne kompatibiln\u00e9 so star\u0161\u00edmi a na rozdiel od star\u0161\u00edch variantov zoh\u013ead\u0148uj\u00fa aspekty ako r\u00fdchlos\u0165, dojazd alebo cena.<\/p>\n\n\n\n
12. Kde sa Wi-Fi zrodila?<\/strong><\/h3>\n\n\n\n
N\u00e1zory sa r\u00f4znia, ale koluje historka, \u017ee Wi-Fi sa p\u00f4vodne zrodila v roku 1971 na Havaji pod ozna\u010den\u00edm ALOHAnet. Malo \u00eds\u0165 o priekopn\u00edcky po\u010d\u00edta\u010dov\u00fd sie\u0165ov\u00fd syst\u00e9m vyvinut\u00fd na Havajskej univerzite.<\/p>\n\n\n\n
O dve desa\u0165ro\u010dia nesk\u00f4r potom americk\u00e1 NCR Corporation a AT&T Corporation vyna\u0161li WaveLAN, ktor\u00fd je pova\u017eovan\u00fd za skuto\u010dn\u00e9ho a jedin\u00e9ho predchodcu Wi-Fi, kedy v roku 1997 bola vydan\u00e1 prv\u00e1 verzia bezdr\u00f4tov\u00e9ho protokolu IEEE 802.11.<\/p>\n\n\n\n
Ke\u010f pominieme ist\u00fa kontroverziu okolo vzniku Wi-Fi, n\u00e1zov ALOHAnet tie\u017e nie je \u00faplne na zahodenie, \u010do hovor\u00edte?<\/p>\n\n\n\n
Verili by ste, \u017ee do roku 2016 mala najr\u00fdchlej\u0161\u00ed internet na svete krajina pobaltsk\u00e9ho regi\u00f3nu-Litva? To u\u017e ale d\u00e1vno nie je pravda av s\u00fa\u010dasnej dobe svoje prvenstvo v najr\u00fdchlej\u0161om internete hrdo zauj\u00edma Singapur.<\/p>\n\n\n\n
ZHRNUT\u00c9 A PODTR\u017dEN\u00c9<\/strong><\/h3>\n\n\n\n
Ak pl\u00e1nujete alebo u\u017e prev\u00e1dzkujete verejn\u00fa dopravu, vedzte, \u017ee vysokor\u00fdchlostn\u00e1 bezplatn\u00e1 Wi-Fi je t\u00fdm prav\u00fdm n\u00e1strojom, ako motivova\u0165 svojich z\u00e1kazn\u00edkov. Sk\u00f4r ne\u017e pohodln\u00e9 sedadlo, noviny alebo k\u00e1va za jazdy ocenia va\u0161i cestuj\u00faci pr\u00e1ve free internet!\u00a0<\/strong>Postupne sa toti\u017e Wi-Fi st\u00e1va pre verejnos\u0165 neodmyslite\u013en\u00fdm \u0161tandardom, ktor\u00fd zauj\u00edma svoju k\u013e\u00fa\u010dov\u00fa poz\u00edciu v rebr\u00ed\u010dku pre hodnotenie \u00farovne a kvality verejn\u00fdch slu\u017eieb.<\/p>\n\n\n\n<\/figure>\n\n\n\n
Pre\u010do sa Wi-Fi hovor\u00ed Wi-Fi a ako to cel\u00e9 funguje? \u010co vlastne o nej vieme? Pre\u010d\u00edtajte si p\u00e1r faktov zo z\u00e1kulisia tohto \u0161ikovn\u00e9ho zariadenia, ktor\u00e9 sa za roky svojho p\u00f4sobenia stalo nepostr\u00e1date\u013enou s\u00fa\u010das\u0165ou n\u00e1\u0161ho ka\u017edodenn\u00e9ho \u017eivota. Wi-Fi je tu u\u017e 30 rokov! Verili by ste, \u017ee tento \u0161ikovn\u00fd vyn\u00e1lez za\u017eil svoj hviezdny boom u\u017e v […]<\/p>\n","protected":false},"author":2,"featured_media":3352,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-3351","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-sk"],"acf":[],"yoast_head":"\n
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