{"id":6928,"date":"2019-10-07T10:54:41","date_gmt":"2019-10-07T10:54:41","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=6928"},"modified":"2020-05-28T10:19:10","modified_gmt":"2020-05-28T10:19:10","slug":"networking-and-engineer-interview-questions-and-answer-part-1","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/networking-and-engineer-interview-questions-and-answer-part-1\/","title":{"rendered":"Networking and Engineer Interview Questions and Answer &#8211; Part 1"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li>What is IPv6 ? Why should we care?<\/li><li>How does ping work ? What about traceroute ?<\/li><li>I type&nbsp;<a href=\"http:\/\/www.yahoo.com\/\" target=\"_blank\" rel=\"noopener\">http:\/\/www.yahoo.com<\/a>&nbsp;in my browser\u2019s URL bar and I press enter. What happens ? (discuss at every OSI layer &#8211; Physical, data link, network, transport, session, presentation, application)<ul><li>DNS &amp; anycast, IP, UDP, routing, BGP, TCP, HTTP, transparent proxy<\/li><li>What is BGP?<\/li><li>What\u2019s a PTR in DNS? Why should we care?<\/li><\/ul><\/li><li>What if I change from&nbsp;<a href=\"http:\/\/www.yahoo.com\/\" target=\"_blank\" rel=\"noopener\">http:\/\/www.yahoo.com<\/a>&nbsp;to&nbsp;<a href=\"https:\/\/www.yahoo.com\/\" target=\"_blank\" rel=\"noopener\">https:\/\/www.yahoo.com<\/a>&nbsp;?<ul><li>Public\/private certificates, CAs, proxying, MiTM, etc.<\/li><\/ul><\/li><li>What happens when I press the send button in my email client ?<\/li><li>How do we prevent bots crawling ? How would you deal with a syn flood ?<\/li><li>How many hosts in a \/24 network? What about a \/22 ?<\/li><li>What is the difference between DNAT and SNAT ? When do you use either ?<\/li><li>What is a virtual IP address? What is a cluster?<\/li><li>What is IPv6 ? Why should we care?<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>What is IPv6 ? Why should we care? How does ping work ? What about traceroute ? I type&nbsp;http:\/\/www.yahoo.com&nbsp;in my browser\u2019s URL bar and I press enter. What happens ? (discuss at every OSI layer &#8211; Physical, data link, network, transport, session, presentation, application) DNS &amp; anycast, IP, UDP, routing, BGP, TCP, HTTP, transparent proxy&#8230;<\/p>\n","protected":false},"author":1,"featured_media":7813,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","_joinchat":[],"footnotes":""},"categories":[541],"tags":[],"class_list":["post-6928","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-networking"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6928","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=6928"}],"version-history":[{"count":1,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6928\/revisions"}],"predecessor-version":[{"id":6929,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/6928\/revisions\/6929"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media\/7813"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=6928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=6928"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=6928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}