{"id":15175,"date":"2024-04-15T04:44:32","date_gmt":"2024-04-15T04:44:32","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=15175"},"modified":"2024-04-15T04:44:32","modified_gmt":"2024-04-15T04:44:32","slug":"the-necessary-conditions-needed-before-deadlock-can-occur-a-no-mutual-exclusion-hold-and-wait-preemption-circular-wait-b-mutual-exclusion-no-hold-and-wait-preemption-circular-wait-c-mutual-e","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-necessary-conditions-needed-before-deadlock-can-occur-a-no-mutual-exclusion-hold-and-wait-preemption-circular-wait-b-mutual-exclusion-no-hold-and-wait-preemption-circular-wait-c-mutual-e\/","title":{"rendered":"The necessary conditions needed before deadlock can occur? A. No Mutual Exclusion, Hold and wait, Preemption, Circular Wait B. Mutual Exclusion, No Hold and wait, Preemption, Circular Wait C. Mutual Exclusion, Hold and wait, No Preemption, Circular Wait D. Mutual Exclusion, Hold and wait, Preemption, No Circular Wait"},"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_6a9ccccc99fde\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    No Mutual Exclusion, Hold and wait, Preemption, Circular Wait                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Mutual Exclusion, No Hold and wait, Preemption, Circular Wait                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Mutual Exclusion, Hold and wait, No Preemption, Circular Wait                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"true\">\r\n                    Mutual Exclusion, Hold and wait, Preemption, No Circular Wait                <\/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 D. Mutual Exclusion, Hold and wait, Preemption, No Circular Wait.<\/p>\n<p>Mutual exclusion is a condition where only one process can access a resource at a time. Hold and wait is a condition where a process is holding a resource and waiting for <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> another resource. Preemption is a condition where a process can be interrupted and its resources taken away. Circular wait is a condition where a process is waiting for a resource that is being held by another process, which is waiting for a resource that is being held by the first process, and so on.<\/p>\n<p>If any of these conditions are not met, deadlock cannot occur. For example, if there is no mutual exclusion, then multiple processes can access resources at the <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> same time, and there is no risk of deadlock. If there is no hold and wait, then a process cannot hold a resource and wait for another resource. If there is no preemption, then a process cannot be interrupted and its resources taken away. If there is circular wait, then there is a risk of deadlock.<\/p>\n<p>Deadlock is a situation in which two or more processes are waiting for each other to release a resource that they are currently holding. This can lead to a system crash or a loss of data. There are a number of ways to prevent deadlock, such as using resource allocation algorithms, deadlock detection and recovery, and avoiding circular wait.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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":[670],"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 necessary conditions needed before deadlock can occur? A. No Mutual Exclusion, Hold and wait, Preemption, Circular Wait B. Mutual Exclusion, No Hold and wait, Preemption, Circular Wait C. Mutual Exclusion, Hold and wait, No Preemption, Circular Wait D. 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