1.0IB Computer Sciencehttps://learnlearn.uk/ibcslearnlearnadminhttps://learnlearn.uk/ibcs/author/learnlearnadmin/rich600338<blockquote class="wp-embedded-content" data-secret="Kk9SKc8eLR"><a href="https://learnlearn.uk/ibcs/automatic-repeat-requests-arqs/">Automatic Repeat Requests (ARQs)</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://learnlearn.uk/ibcs/automatic-repeat-requests-arqs/embed/#?secret=Kk9SKc8eLR" width="600" height="338" title="“Automatic Repeat Requests (ARQs)” — IB Computer Science" data-secret="Kk9SKc8eLR" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://learnlearn.uk/ibcs/wp-includes/js/wp-embed.min.js </script> Automatic Repeat Request Protocol This is a protocol for error control over unreliable or noisy network connections. For each frame sent an acknowledgement is sent from the receiver to indicate that the frame has been successfully used. Checksums / check-digits are used to check the data integrity and timeouts are used if not reply is… Read More »https://learnlearn.uk/igcsecs/wp-content/uploads/sites/23/2021/03/Stop-and-wait-ARQ-1.jpg