{"id":58371,"date":"2024-04-16T01:18:20","date_gmt":"2024-04-16T01:18:20","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=58371"},"modified":"2024-04-16T01:18:20","modified_gmt":"2024-04-16T01:18:20","slug":"the-original-ieee-802-mac-address-comes-from","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-original-ieee-802-mac-address-comes-from\/","title":{"rendered":"The original IEEE 802 MAC address comes from . . . . . . . ."},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a9802275d1a2\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    mac address                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    ip address                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"true\">\r\n                    ethernet address                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    http                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>C. Ethernet address<\/strong><\/p>\n<p>An Ethernet address, also known as a MAC address, is a unique identifier assigned to network interfaces for communications on the physical network segment. It is a 12-digit hexadecimal number, written in the form of six pairs of hexadecimal digits separated by colons, for example: 00:11:22:33:44:55.<\/p>\n<p>The first three pairs of digits are assigned by the Institute of Electrical and Electronics Engineers (IEEE) to identify the manufacturer of the network interface card (NIC). The last three pairs of digits are assigned by the manufacturer to identify the specific NIC.<\/p>\n<p>Ethernet addresses are used in the <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> Media Access Control (MAC) sublayer of the Data <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> Link Layer of the Open Systems Interconnection (OSI) model. They are used to identify devices on a network and to control access to the network.<\/p>\n<p>MAC addresses are often used in conjunction with IP addresses to identify devices on a network. For example, when a computer sends a packet of data to another computer on the same network, it will include the destination computer&#8217;s MAC address in the packet header. The network router will then use the destination computer&#8217;s MAC address to forward the packet to the correct computer.<\/p>\n<p>MAC addresses are also used in some security protocols, such as MAC filtering. MAC filtering allows network administrators to control which devices are allowed to connect to a network by specifying a list of allowed MAC addresses.<\/p>\n<hr \/>\n<p>Option A is incorrect because a MAC address is not the same as an IP address. An IP address is a 32-bit number that is used to identify devices on a network. MAC addresses are 12-digit hexadecimal numbers that are used to identify devices on a physical network segment.<\/p>\n<p>Option B is incorrect because an IP address is not the same as an Ethernet address. An IP address is a 32-bit number that is used to identify devices on a network. Ethernet addresses are 12-digit hexadecimal numbers that are used to identify devices on a physical network segment.<\/p>\n<p>Option C is the correct answer because an Ethernet address is a unique identifier assigned to network interfaces for communications on the physical network segment.<\/p>\n<p>Option D is incorrect because HTTP is a protocol that is used to transfer data over the World Wide Web. It is not related to MAC addresses.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[730],"tags":[],"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>The original IEEE 802 MAC address comes from . . . . . . . .<\/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\/the-original-ieee-802-mac-address-comes-from\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The original IEEE 802 MAC address comes from . . 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