{"id":6660,"date":"2026-04-13T11:50:48","date_gmt":"2026-04-13T11:50:48","guid":{"rendered":"http:\/\/the-codest.localhost\/dictionary\/subnet-mask\/"},"modified":"2026-04-13T11:50:50","modified_gmt":"2026-04-13T11:50:50","slug":"undarnetgrima","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/is\/dictionary\/subnet-mask\/","title":{"rendered":"Undarnetsgr\u00edma"},"content":{"rendered":"

Undarnetsgr\u00edma<\/h1>\n

Undarnetmaski er t\u00f6lulegur k\u00f3\u00f0i<\/a> notu\u00f0 \u00ed netverkum samkv\u00e6mt internetpr\u00f3t\u00f3kollinum (IP) til a\u00f0 greina nethlutann \u00ed IP-netfangi. H\u00fan er 32 bita talan sem notu\u00f0 er til a\u00f0 skipta IP-netfangi \u00ed tvo hluta, netfang og h\u00fdsilfang. Undirnetmaskinn er nota\u00f0ur samhli\u00f0a IP-netfanginu til a\u00f0 \u00e1kvar\u00f0a hva\u00f0a hluti netfangsins er nota\u00f0ur til a\u00f0 bera kennsl \u00e1 neti\u00f0 og hva\u00f0a hluti er nota\u00f0ur til a\u00f0 bera kennsl \u00e1 h\u00fdsilinn.<\/p>\n

Undarnetgr\u00edman er notu\u00f0 til a\u00f0 \u00e1kvar\u00f0a st\u00e6r\u00f0 netsins, sem er mikilv\u00e6gt fyrir lei\u00f0s\u00f6gn og samskipti milli t\u00e6kja. H\u00fan er einnig notu\u00f0 til a\u00f0 \u00e1kvar\u00f0a fj\u00f6lda h\u00fdsilna sem geta tengst neti. Undarnetgr\u00edman er t\u00e1knu\u00f0 \u00ed punkt-t\u00f6lustafakerfi, sem er r\u00f6\u00f0 fj\u00f6gurra talna a\u00f0skildra me\u00f0 punktum. Hver tala t\u00e1knar 8 bita \u00ed undarnetgr\u00edmunni og t\u00f6lurnar liggja \u00e1 bilinu 0 til 255.<\/p>\n

Undarnetgr\u00edman er notu\u00f0 \u00e1samt IP-t\u00f6lu til a\u00f0 \u00e1kvar\u00f0a netfangi\u00f0. Netfangi\u00f0 er s\u00e1 hluti IP-t\u00f6lunnar sem au\u00f0kennir neti\u00f0. H\u00fdsilfangi\u00f0 er s\u00e1 hluti IP-t\u00f6lunnar sem au\u00f0kennir einstaka t\u00e6ki \u00e1 netinu. Undarnetgr\u00edman er notu\u00f0 til a\u00f0 \u00e1kvar\u00f0a hva\u00f0a hluti IP-t\u00f6lunnar er nota\u00f0ur til a\u00f0 au\u00f0kenna neti\u00f0 og hva\u00f0a hluti er nota\u00f0ur til a\u00f0 au\u00f0kenna h\u00fdsilinn.<\/p>\n

Undarnetgr\u00edman er mikilv\u00e6gur hluti af IP-netverki. H\u00fan er notu\u00f0 til a\u00f0 greina nethlutann \u00ed IP-netfangi, sem er nau\u00f0synlegur fyrir lei\u00f0s\u00f6gn og samskipti milli t\u00e6kja. H\u00fan \u00e1kvar\u00f0ar einnig st\u00e6r\u00f0 netsins og fj\u00f6lda h\u00fdsilna sem h\u00e6gt er a\u00f0 tengja vi\u00f0 \u00fea\u00f0. A\u00f0 skilja undarnetgr\u00edmur er nau\u00f0synlegt fyrir alla sem vinna me\u00f0 IP-netverk og er grundvallaratri\u00f0i \u00ed t\u00f6lvunetverkum.<\/p>","protected":false},"excerpt":{"rendered":"

L\u00e6r\u00f0u um undarnetsgr\u00edmur \u00ed IP-netverkun. Skildu hvernig \u00fe\u00e6r bera kennsl \u00e1 nethlutann \u00ed IP-netfangi og \u00e1kvar\u00f0a st\u00e6r\u00f0 netsins og fj\u00f6lda h\u00fdsilna.<\/p>","protected":false},"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6660","dictionary","type-dictionary","status-publish","hentry"],"acf":[],"yoast_head":"\nSubnet Mask - The Codest<\/title>\n<meta name=\"description\" content=\"Learn about subnet masks in IP networking. 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