{"id":57082,"date":"2024-04-16T00:55:53","date_gmt":"2024-04-16T00:55:53","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=57082"},"modified":"2024-04-16T00:55:53","modified_gmt":"2024-04-16T00:55:53","slug":"which-of-the-following-is-not-a-messaging-mode-in-coap","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/","title":{"rendered":"Which of the following is not a messaging mode in CoAP?"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;Confirmable&#8221; option2=&#8221;Separate&#8221; option3=&#8221;Direct&#8221; option4=&#8221;Piggyback&#8221; correct=&#8221;option4&#8243;]<!--more--><\/p>\n<p>The correct answer is D. Piggyback.<\/p>\n<p>CoAP is a lightweight, binary application-layer protocol for constrained devices and low-power networks. It is designed to be an efficient alternative to HTTP for machine-to-machine (M2M) and Internet of Things (IoT) applications.<\/p>\n<p>CoAP defines four messaging modes:<\/p>\n<ul>\n<li>Confirmable (CON): A message is sent with a request for a response. The sender will wait for a response before continuing.<\/li>\n<li>Non-confirmable (NON): A message is sent without a request for a response. The sender will not wait for a response.<\/li>\n<li>ACK: A message is sent to acknowledge the receipt of a CON or NON message.<\/li>\n<li>PING: A message is sent to check the reachability of a peer.<\/li>\n<\/ul>\n<p>Piggyback is not a messaging mode in CoAP. It is a technique that can be used to send a small amount of data with a larger message. For example, a device could send a PING message with a small amount of data, such as the device&#8217;s current temperature.<\/p>\n<p>Here is a brief explanation of each option:<\/p>\n<ul>\n<li>Confirmable (CON): A message is sent with a request for a response. The sender will wait for a response before continuing. This is the most reliable messaging mode, but it is also the most expensive.<\/li>\n<li>Non-confirmable (NON): A message is sent without a request for a response. The sender will not wait for a response. This is the least reliable messaging mode, but it is also the most efficient.<\/li>\n<li>ACK: A message is sent to acknowledge the receipt of a CON or NON message. This is necessary to ensure that the sender knows that the message was received.<\/li>\n<li>PING: A message is sent to check the reachability of a peer. This is useful for keeping track of the availability of devices on a network.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;Confirmable&#8221; option2=&#8221;Separate&#8221; option3=&#8221;Direct&#8221; option4=&#8221;Piggyback&#8221; correct=&#8221;option4&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[728],"tags":[],"class_list":["post-57082","post","type-post","status-publish","format-standard","hentry","category-cloud-computing","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which of the following is not a messaging mode in CoAP?<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which of the following is not a messaging mode in CoAP?\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;Confirmable&#8221; option2=&#8221;Separate&#8221; option3=&#8221;Direct&#8221; option4=&#8221;Piggyback&#8221; correct=&#8221;option4&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-16T00:55:53+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Which of the following is not a messaging mode in CoAP?","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/","og_locale":"en_US","og_type":"article","og_title":"Which of the following is not a messaging mode in CoAP?","og_description":"[amp_mcq option1=&#8221;Confirmable&#8221; option2=&#8221;Separate&#8221; option3=&#8221;Direct&#8221; option4=&#8221;Piggyback&#8221; correct=&#8221;option4&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-16T00:55:53+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/","name":"Which of the following is not a messaging mode in CoAP?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-16T00:55:53+00:00","dateModified":"2024-04-16T00:55:53+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/which-of-the-following-is-not-a-messaging-mode-in-coap\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"Cloud computing","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/cloud-computing\/"},{"@type":"ListItem","position":4,"name":"Which of the following is not a messaging mode in CoAP?"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/57082","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=57082"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/57082\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=57082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=57082"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=57082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}