{"id":1266,"date":"2024-02-17T16:25:24","date_gmt":"2024-02-17T10:55:24","guid":{"rendered":"https:\/\/lotusarise.com\/qna\/?p=1266"},"modified":"2024-04-03T07:19:37","modified_gmt":"2024-04-03T01:49:37","slug":"q-consider-the-following-communication-technologies","status":"publish","type":"post","link":"https:\/\/lotusarise.com\/qna\/upsc\/q-consider-the-following-communication-technologies","title":{"rendered":"Q.\u00a0Consider the following communication technologies:"},"content":{"rendered":"\n<ol class=\"wp-block-list\">\n<li>Closed-circuit Television<\/li>\n\n\n\n<li>Radio Frequency Identification<\/li>\n\n\n\n<li>Wireless Local Area Network<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Which of the above are considered of the&nbsp;<strong>Short-Range<\/strong>&nbsp;devices\/technologies?<\/p>\n\n\n\n<ul class=\"mcq wp-block-list\">\n<li>1 and 2 only.<\/li>\n\n\n\n<li>2 and 3 only<\/li>\n\n\n\n<li>1 and 3 only<\/li>\n\n\n\n<li>1, 2 and 3<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>Answer: (d) 1, 2 and 3<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"short-range-devices-srd\"><strong>Short Range Devices (SRD)<\/strong><\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Short Range Devices (SRD) are&nbsp;<strong>radio devices that offer a low risk of interference with other radio services<\/strong>, usually because of their transmitted power, and hence their range&nbsp;is low.<\/li>\n\n\n\n<li>The definition \u2018Short Range Device\u2019 may be applied to many different types of wireless equipment including various forms of:\n<ul class=\"wp-block-list\">\n<li>Access control (including door and gate openers).<\/li>\n\n\n\n<li>Alarms and movement detectors<\/li>\n\n\n\n<li>Cordless audio devices, including wireless microphones.<\/li>\n\n\n\n<li><strong>Closed-circuit television (CCTV):&nbsp;<\/strong>CCTV (closed-circuit television) is a TV system in which signals are not publicly distributed but are monitored, primarily for surveillance and security purposes.&nbsp;<\/li>\n\n\n\n<li><strong>Wireless Local Area Networks (WLAN):&nbsp;<\/strong>A wireless local area network (WLAN) is a wireless distribution method for two or more devices.\n<ul class=\"wp-block-list\">\n<li>WLANs use high-frequency radio waves and often include an access point to the Internet.<\/li>\n\n\n\n<li>A WLAN allows users to move around the coverage area, often a home or small office, while maintaining a network connection.<\/li>\n\n\n\n<li>A WLAN is sometimes called a local area wireless network (LAWN).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Radio Frequency Identification&nbsp;(RFID):&nbsp;<\/strong>Radio Frequency Identification (RFID) is a technology that uses radio waves to passively identify a tagged object.\n<ul class=\"wp-block-list\">\n<li>It is used in several commercial and industrial applications, from tracking items along a supply chain to keeping track of items checked out of a library.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Cordless audio devices, including wireless microphones<\/li>\n\n\n\n<li>Industrial control<\/li>\n\n\n\n<li>Medical implants<\/li>\n\n\n\n<li>Metering devices<\/li>\n\n\n\n<li>Remote control<\/li>\n\n\n\n<li>Road Transport Telematics<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lotusarise.com\/wp-content\/uploads\/2023\/12\/Short-Range-devices-1024x817.png\" alt=\"Short-Range devices\" class=\"wp-image-47370\" title=\"\"><figcaption class=\"wp-element-caption\">Short-Range devices<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lotusarise.com\/wp-content\/uploads\/2023\/12\/Short-Range-Communication-Tech-1024x573.jpeg\" alt=\"Short Range Communication Tech\" class=\"wp-image-47371\" title=\"\"><\/figure>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"near-field-communication-nfc-technology\"><strong>Near Field Communication (NFC) Technology<\/strong><\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>NFC is a short-range wireless connectivity technology<\/strong>&nbsp;that&nbsp;<strong>allows NFC-enabled devices to communicate with each other and transfer information quickly and easily with a single touch<\/strong>&nbsp;\u2013 whether to pay bills, exchange business cards, download coupons, or share a document.<\/li>\n\n\n\n<li>NFC&nbsp;<strong>transmits data through electromagnetic radio fields,<\/strong>&nbsp;to enable communication between two devices. Both devices must contain NFC chips, as transactions take place within a very short distance.<\/li>\n\n\n\n<li>NFC-enabled devices must be either physically touching or within a few centimetres from each other for data transfer to occur.<\/li>\n\n\n\n<li>In 2004, consumer electronics companies, Nokia, Philips and Sony together formed the NFC Forum, which outlined the architecture for NFC technology to create powerful new consumer-driven products.\n<ul class=\"wp-block-list\">\n<li>Nokia released the first NFC-enabled phone in 2007.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Applications<\/strong>:\n<ul class=\"wp-block-list\">\n<li>It is used in contactless banking cards to perform money transactions or to generate contact-less tickets for public transport.<\/li>\n\n\n\n<li>Contactless cards and readers use NFC in several applications from securing networks and buildings to monitoring inventory and sales, preventing auto theft, and running unmanned toll booths.<\/li>\n\n\n\n<li>It is present in speakers, household appliances, and other electronic devices that are controlled through smartphones.<\/li>\n\n\n\n<li>It also has an application in healthcare, to monitor patient stats through NFC-enabled wristbands. NFC is used in wireless charging too.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Which of the above are considered of the&nbsp;Short-Range&nbsp;devices\/technologies? Answer: (d) 1, 2 and 3 Short Range Devices (SRD) Near Field Communication (NFC) Technology<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_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":"","footnotes":""},"categories":[1,3],"tags":[44],"years":[51],"class_list":["post-1266","post","type-post","status-publish","format-standard","hentry","category-upsc","category-prelims","tag-science-and-tech","years-51"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"UPSC"},{"value":3,"label":"Prelims"}],"post_tag":[{"value":44,"label":"Science and Tech"}],"years":[{"value":51,"label":"2022"}]},"featured_image_src_large":false,"author_info":{"display_name":"LotusArise","author_link":"https:\/\/lotusarise.com\/qna\/author\/team-lotusarise"},"comment_info":0,"category_info":[{"term_id":1,"name":"UPSC","slug":"upsc","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":1269,"filter":"raw","cat_ID":1,"category_count":1269,"category_description":"","cat_name":"UPSC","category_nicename":"upsc","category_parent":0},{"term_id":3,"name":"Prelims","slug":"prelims","term_group":0,"term_taxonomy_id":3,"taxonomy":"category","description":"","parent":1,"count":1251,"filter":"raw","cat_ID":3,"category_count":1251,"category_description":"","cat_name":"Prelims","category_nicename":"prelims","category_parent":1}],"tag_info":[{"term_id":44,"name":"Science and Tech","slug":"science-and-tech","term_group":0,"term_taxonomy_id":44,"taxonomy":"post_tag","description":"","parent":0,"count":167,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/comments?post=1266"}],"version-history":[{"count":1,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1266\/revisions"}],"predecessor-version":[{"id":1285,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/posts\/1266\/revisions\/1285"}],"wp:attachment":[{"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/media?parent=1266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/categories?post=1266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/tags?post=1266"},{"taxonomy":"years","embeddable":true,"href":"https:\/\/lotusarise.com\/qna\/wp-json\/wp\/v2\/years?post=1266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}