1.0A Level Computer Sciencehttps://learnlearn.uk/alevelcslearnlearnadminhttps://learnlearn.uk/alevelcs/author/learnlearnadmin/rich600338<blockquote class="wp-embedded-content" data-secret="Tp18PvgTsQ"><a href="https://learnlearn.uk/alevelcs/subnet-masks/">Subnetworks & Subnet Masks</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://learnlearn.uk/alevelcs/subnet-masks/embed/#?secret=Tp18PvgTsQ" width="600" height="338" title="“Subnetworks & Subnet Masks” — A Level Computer Science" data-secret="Tp18PvgTsQ" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> Subnet Masks A subnet mask is a way of splitting a network up into smaller mini networks without wasting IP addresses. In a standard home/small office network your router can normally support up to 250 devices and you can use subnetting to separate parts of the network from each other, whilst still allowing all devices… Read More »https://learnlearn.uk/alevelcs/wp-content/uploads/sites/20/2021/02/subnet-mask-diagram-cie-alevel-9618.png