{"id":38,"date":"2022-01-02T17:14:29","date_gmt":"2022-01-02T16:14:29","guid":{"rendered":"http:\/\/yb-isn.fr\/snt\/?page_id=38"},"modified":"2022-01-09T15:54:56","modified_gmt":"2022-01-09T14:54:56","slug":"internet","status":"publish","type":"page","link":"https:\/\/yb-isn.fr\/snt\/?page_id=38","title":{"rendered":"Internet"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">1)&nbsp; Internet<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1.1)&nbsp; D\u00e9finitions -historique<\/h2>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Le web ou world wide web est une application d\u2019internet parmi tant d\u2019autres. On parle de toile d\u2019araign\u00e9e mondiale. <\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Il ne faut donc pas confondre web et internet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-1.png\" alt=\"\" class=\"wp-image-72\" width=\"406\" height=\"182\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-1.png 541w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-1-300x134.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-1-360x161.png 360w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\" \/><\/figure>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Internet est un r\u00e9seau physique&nbsp;: r\u00e9seau de r\u00e9seaux C\u2019est un ensemble d\u2019\u00e9quipements (routeurs ,c\u00e2bles , fibres optiques ordinateurs switches\u2026) reli\u00e9s entre eux pour \u00e9changer des informations.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image.png\" alt=\"\" class=\"wp-image-70\" width=\"200\" height=\"143\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image.png 399w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-300x215.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-360x258.png 360w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/figure>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">L\u2019information se pr\u00e9sente sous forme de bits.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-14.png\" alt=\"\" class=\"wp-image-131\" width=\"233\" height=\"84\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-14.png 311w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-14-300x108.png 300w\" sizes=\"auto, (max-width: 233px) 100vw, 233px\" \/><\/figure>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Le bit est l\u2019unit\u00e9 d\u2019information \u00e9l\u00e9mentaire manipulable par un ordinateur, ayant la valeur 1 ou 0.<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">On parle alors de donn\u00e9es num\u00e9riques.<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Pour transmettre des donn\u00e9es il faut un canal (une ligne de transmission)entre des machines.<\/p>\n\n\n\n<p><strong>Quelques d\u00e9bits:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-15.png\" alt=\"\" class=\"wp-image-134\" width=\"335\" height=\"230\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-15.png 669w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-15-300x206.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-15-360x248.png 360w\" sizes=\"auto, (max-width: 335px) 100vw, 335px\" \/><\/figure>\n\n\n\n<p>Vous pouvez mesurer le d\u00e9bit de votre connexion et la latence :<a href=\"https:\/\/www.journaldunet.fr\/web-tech\/dictionnaire-du-webmastering\/1487601-test-debit-internet\/\">Mesure du d\u00e9bit<\/a><\/p>\n\n\n\n<p>Ci-dessous des mesures effectu\u00e9es sur mes \u00e9quipements.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-29.png\" alt=\"\" class=\"wp-image-233\" width=\"510\" height=\"339\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-29.png 1019w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-29-300x200.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-29-768x511.png 768w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-29-360x240.png 360w\" sizes=\"auto, (max-width: 510px) 100vw, 510px\" \/><\/figure>\n\n\n\n<p>Deux grandeurs importantes  le d\u00e9bit et la latence.<\/p>\n\n\n\n<p>La latence est le temps que met le message \u00e0 arriver. \u00ab\u00a0Vous ouvrez le robinet et vous mesurez le temps pour que l&rsquo;eau commence \u00e0 couler.\u00a0\u00bb<\/p>\n\n\n\n<p>Le d\u00e9bit est le nombre de bit par seconde. \u00ab\u00a0L&rsquo;eau commence \u00e0 couler et vous mesurez le nombre de litres qui s&rsquo;\u00e9coulent en 1 seconde\u00a0\u00bb<\/p>\n\n\n\n<p><strong>Quelques rep\u00e8res historiques<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-30.png\" alt=\"\" class=\"wp-image-239\" width=\"511\" height=\"276\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-30.png 1021w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-30-300x162.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-30-768x414.png 768w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-30-360x194.png 360w\" sizes=\"auto, (max-width: 511px) 100vw, 511px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-sciences-numeriques-et-technologie wp-block-embed-sciences-numeriques-et-technologie\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"N1jiW841Rj\"><a href=\"https:\/\/yb-isn.fr\/snt\/?p=195\">Du t\u00e9l\u00e9graphe au t\u00e9l\u00e9phone filaire<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u00ab\u00a0Du t\u00e9l\u00e9graphe au t\u00e9l\u00e9phone filaire\u00a0\u00bb &#8212; Sciences Num\u00e9riques et technologie\" src=\"https:\/\/yb-isn.fr\/snt\/?p=195&#038;embed=true#?secret=6lbQFdGXu0#?secret=N1jiW841Rj\" data-secret=\"N1jiW841Rj\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-sciences-numeriques-et-technologie wp-block-embed-sciences-numeriques-et-technologie\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"OMA7pxP4jC\"><a href=\"https:\/\/yb-isn.fr\/snt\/?p=151\">C\u00e2bles sous marins<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u00ab\u00a0C\u00e2bles sous marins\u00a0\u00bb &#8212; Sciences Num\u00e9riques et technologie\" src=\"https:\/\/yb-isn.fr\/snt\/?p=151&#038;embed=true#?secret=mbNbszzJHF#?secret=OMA7pxP4jC\" data-secret=\"OMA7pxP4jC\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.2)&nbsp; Adressage IP<\/h2>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Les adresses IP sont les num\u00e9ros qui permettent aux ordinateurs et aux objets connect\u00e9s de communiquer les uns avec les autres sur internet.<\/p>\n\n\n\n<p>regarder les 4 premi\u00e8res minutes.<\/p>\n\n\n\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/5o8CwafCxnU?start=0\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"361\" height=\"211\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-2.png\" alt=\"\" class=\"wp-image-76\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-2.png 361w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-2-300x175.png 300w\" sizes=\"auto, (max-width: 361px) 100vw, 361px\" \/><\/figure>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Les blocs d&rsquo;adresses priv\u00e9es commencent par 10, 172 ou 192.Les autres sont publiques.<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">La croissance du nombre d&rsquo;utilisateurs et de serveurs sur Internet s&rsquo;accompagne d&rsquo;un \u00e9puisement des adresses IPv4.<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">IPV4 permettait de distinguer (2<sup>32<\/sup>) 4 milliards d\u2019adresses<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">IPV6 permet de distinguer (2<sup>128<\/sup>)100 milliards de milliard de milliard de milliard d\u2019adresses.<\/p>\n\n\n\n<p class=\"has-cyan-bluish-gray-color has-text-color\">Si chaque IP \u00e9tait un grains de sable de sable on aurait une masse tr\u00e8s sup\u00e9rieur \u00e0 celle de la terre!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.2)&nbsp; Adresse symbolique<\/h2>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Le syst\u00e8me DNS (Domain Name System) transforme une adresse symbolique plus facile \u00e0 retenir en adresse IP num\u00e9rique.<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Il est r\u00e9alis\u00e9 par un grand nombre d\u2019ordinateurs r\u00e9partis (de fa\u00e7on hi\u00e9rarchis\u00e9e)  dans le monde et constamment mis \u00e0 jour.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=5o8CwafCxnU&amp;t=249s\">https:\/\/www.youtube.com\/watch?v=5o8CwafCxnU&amp;t=249s<\/a><\/p>\n\n\n\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/5o8CwafCxnU?start=249\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-3.png\" alt=\"\" class=\"wp-image-91\" width=\"491\" height=\"278\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-3.png 491w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-3-300x170.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-3-360x204.png 360w\" sizes=\"auto, (max-width: 491px) 100vw, 491px\" \/><\/figure><\/div>\n\n\n\n<p>Le cache DNS est le stockage de l\u2019IP sur une machine ou un serveur pour acc\u00e9l\u00e9rer l\u2019acc\u00e8s \u00e0 site d\u00e9j\u00e0 visit\u00e9.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-4.png\" alt=\"\" class=\"wp-image-92\" width=\"446\" height=\"265\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-4.png 446w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-4-300x178.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-4-360x214.png 360w\" sizes=\"auto, (max-width: 446px) 100vw, 446px\" \/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">1.4)&nbsp; Protocole TCP\/IP et routage<\/h2>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Le routage est le m\u00e9canisme par lequel des chemins sont s\u00e9lectionn\u00e9s dans un r\u00e9seau pour acheminer les donn\u00e9es d\u2019un exp\u00e9diteur jusqu\u2019\u00e0 un ou plusieurs destinataires. Les r\u00e9seaux informatiques ont mis beaucoup de temps \u00e0 d\u00e9ployer le routage dans toute sa dimension en raison des monopoles dans les t\u00e9l\u00e9communications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.4.1)&nbsp; Protocole IP <\/h3>\n\n\n\n<p>L\u2019adresse de l\u2019\u00e9metteur et du destinataire sont transmises avec chacune des portions du message d\u00e9coup\u00e9 en paquets.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"563\" height=\"350\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-5.png\" alt=\"\" class=\"wp-image-107\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-5.png 563w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-5-300x187.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-5-360x224.png 360w\" sizes=\"auto, (max-width: 563px) 100vw, 563px\" \/><\/figure>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Le protocole IP  est insuffisant<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Il ne v\u00e9rifie pas les donn\u00e9es<\/li><li>Ne num\u00e9rote pas les paquets<\/li><li>Ne fait rien en cas de perte de donn\u00e9es<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">1.4.2)&nbsp; Protocole TCP <\/h3>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">Le protocole TCP assure le transport des paquets<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Num\u00e9rotant les paquets<\/li><li>Classant les paquets<\/li><li>Assurant l\u2019\u00e9mission d\u2019accus\u00e9s de r\u00e9ception<\/li><li>Le renvoi de paquets si n\u00e9cessaire donc pas de perte de paquets<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"550\" height=\"184\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-6.png\" alt=\"\" class=\"wp-image-114\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-6.png 550w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-6-300x100.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-6-360x120.png 360w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">1.4.3)&nbsp; Le routage des paquets<\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"738\" height=\"289\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-7.png\" alt=\"\" class=\"wp-image-115\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-7.png 738w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-7-300x117.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-7-360x141.png 360w\" sizes=\"auto, (max-width: 738px) 100vw, 738px\" \/><\/figure>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">La communication entre deux r\u00e9seaux peut s\u2019\u00e9tablir \u00e0 travers un routeur.<br>Pour d\u00e9terminer le chemin que doit emprunter un paquet pour arriver \u00e0 destination, le routeur s\u2019appuie sur une table de routage.<br>Dans des petits r\u00e9seaux, cette table est statique et mise \u00e0 jour manuellement. Dans les r\u00e9seaux plus grands ces tables sont mises \u00e0 jour de fa\u00e7on dynamique \u00e0 l\u2019aide de protocoles sp\u00e9cifiques.<br>La table de routage n\u2019a pas besoin de d\u00e9finir tous les chemins du r\u00e9seau.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.5)&nbsp; Gouvernance<\/h2>\n\n\n\n<p class=\"has-vivid-red-color has-text-color\">La gouvernance d\u2019Internet est l\u2019\u00e9laboration et l\u2019application conjointes, par les \u00c9tats, le secteur priv\u00e9, la soci\u00e9t\u00e9 civile et les organisations internationales, dans le cadre de leurs r\u00f4les respectifs, de principes, normes, r\u00e8gles, proc\u00e9dures de prise de d\u00e9cision et programmes propres \u00e0 fa\u00e7onner l\u2019\u00e9volution et l\u2019usage de l&rsquo;Internet (selon la d\u00e9finition donn\u00e9e par le groupe de travail sur la gouvernance d&rsquo;Internet).<\/p>\n\n\n\n<p>Internet Engineering Task Force (IETF) : d\u00e9veloppement et promotion des standards de communication<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"153\" height=\"87\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-8.png\" alt=\"\" class=\"wp-image-119\"\/><\/figure>\n\n\n\n<p>Internet Society (ISOC) : promotion du d\u00e9veloppement, de l&rsquo;\u00e9volution et de l&rsquo;usage de l&rsquo;Internet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-9.png\" alt=\"\" class=\"wp-image-121\" width=\"215\" height=\"88\"\/><\/figure>\n\n\n\n<p>Internet Corporation for Assigned Names and Numbers (ICANN)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"154\" height=\"123\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-10.png\" alt=\"\" class=\"wp-image-122\"\/><\/figure>\n\n\n\n<p>(Internet Assigned Numbers Authority),Ressources de num\u00e9ros, Noms de domaine. Affectations de protocoles.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"197\" height=\"76\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-11.png\" alt=\"\" class=\"wp-image-123\"\/><\/figure>\n\n\n\n<p>Registre internet r\u00e9gional pour la zone Europe<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"311\" height=\"104\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-12.png\" alt=\"\" class=\"wp-image-124\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-12.png 311w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-12-300x100.png 300w\" sizes=\"auto, (max-width: 311px) 100vw, 311px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-13-1024x490.png\" alt=\"\" class=\"wp-image-125\" width=\"768\" height=\"368\" srcset=\"https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-13-1024x490.png 1024w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-13-300x144.png 300w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-13-768x367.png 768w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-13-360x172.png 360w, https:\/\/yb-isn.fr\/snt\/wp-content\/uploads\/2022\/01\/image-13.png 1041w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>1)&nbsp; Internet 1.1)&nbsp; D\u00e9finitions -historique Le web ou world wide web est une application d\u2019internet parmi tant d\u2019autres. On parle de toile d\u2019araign\u00e9e mondiale. Il ne faut donc pas confondre web et internet. Internet est un r\u00e9seau physique&nbsp;: r\u00e9seau de&hellip;&nbsp;<a href=\"https:\/\/yb-isn.fr\/snt\/?page_id=38\" class=\"more-link\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":70,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-38","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=\/wp\/v2\/pages\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=38"}],"version-history":[{"count":50,"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=\/wp\/v2\/pages\/38\/revisions"}],"predecessor-version":[{"id":261,"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=\/wp\/v2\/pages\/38\/revisions\/261"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=\/wp\/v2\/media\/70"}],"wp:attachment":[{"href":"https:\/\/yb-isn.fr\/snt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}