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0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a></figure></div><ul><li><p><span>Week 1: </span><a href="https://www.codereliant.io/p/sre-interview-prep-plan-week-1">Fundamentals of SRE</a><span> (This post)</span></p></li><li><p><span>Week 2: </span><a href="https://www.codereliant.io/p/sre-interview-prep-plan-week-2">Automation &amp; Scripting</a></p></li><li><p><span>Week 3: </span><a href="https://www.codereliant.io/p/sre-interview-prep-plan-week-3">Monitoring, Logging, and Alerting</a></p></li><li><p><span>Week 4: </span><a href="https://www.codereliant.io/p/sre-interview-prep-plan-week-4">Incident Management Lifecycle</a></p></li><li><p><span>Week 5: </span><a href="https://www.codereliant.io/p/sre-interview-prep-plan-week-5">Scalability, Performance, &amp; System Design</a></p></li><li><p><span>Week 6: </span><a href="https://www.codereliant.io/p/sre-interview-prep-plan-week-6">Mock Interviews and Revision</a></p></li></ul><p>The idea of interviewing for an SRE role can seem intimidating. These jobs are highly competitive in the current market and you need to demonstrate skills across a ton of technical areas.</p><p>This 6-week plan we've put together will help guide you through the process so you can really excel in those interviews. We'll spend each week focusing on building up your expertise in the key areas SREs need to know, like automation, monitoring, incident response, etc.</p><p>The structured plan enables both aspiring and seasoned engineers to gradually develop a robust SRE foundation. Novices can learn core concepts while professionals can transition roles. By the end of the 6 weeks, participants will gain deeper understanding to ace interviews. The roadmap polishes problem-solving and prepares candidates to shine technically and behaviorally in SRE interviews through a progressive plan.</p><h2 class="header-anchor-post">Days 1-2: Introduction to SRE<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§days-1-2-introduction-to-sre" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/days-1-2-introduction-to-sre" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h2><p>First 2 days are mainly about understanding what the SRE role is about, the value that an SRE bring to a product, team, and organization. In addition, the various problems SREs help solve, and they fit in the software engineering puzzle.</p><h3 class="header-anchor-post">Resources<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§resources" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/resources" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h3><ul><li><p><a href="https://sre.google/workbook/how-sre-relates/">How SRE Relates to Devops</a></p></li><li><p><a href="https://sre.google/sre-book/introduction/">Intro to SRE</a></p></li><li><p><a href="https://sre.google/sre-book/embracing-risk/">Managing &amp; Embracing Risk</a></p></li><li><p><a href="https://sre.google/sre-book/eliminating-toil/">Eliminating Toil</a></p></li><li><p><a href="https://sre.google/sre-book/communication-and-collaboration/">Communication &amp; Collaboration in SRE</a></p></li></ul><h3 class="header-anchor-post">SRE Questions &amp; Problems:<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§sre-questions-and-problems" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/sre-questions-and-problems" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h3><ul><li><p><span>Can you describe to me the </span><strong>role</strong><span> of an SRE?</span></p></li><li><p><span>How does an SRE </span><strong>differs</strong><span> from a system </span><strong>admin</strong><span> or a </span><strong>devops</strong><span> engineer?</span></p></li><li><p><span>What is Site Reliability Engineering and how does it differ from </span><strong>traditional IT</strong><span> operations?</span></p></li><li><p><span>SRE are known as </span><strong>gatekeepers</strong><span>. How can they balance reliability and the pace of </span><strong>innovation</strong><span>?</span></p></li><li><p><span>How would you explain the principle of &quot;</span><strong>Automation</strong><span> over Manual Work&quot; in SRE? Can you provide an example where </span><strong>automation</strong><span> significantly improved </span><strong>operational efficiency</strong><span>?</span></p></li><li><p><span>In your opinion, what are the key </span><strong>skills</strong><span> and </span><strong>traits</strong><span> an SRE should possess? How have you demonstrated these in your previous </span><strong>experiences</strong><span>?</span></p></li><li><p><span>Explain the concept of &quot;</span><strong>Toil</strong><span>&quot; in SRE. How can toil be </span><strong>measured</strong><span> and </span><strong>reduced</strong><span> in an operational environment?</span></p></li><li><p><span>Describe a </span><strong>challenging</strong><span> technical problem you encountered in your previous role. How did you approach the problem, and what </span><strong>steps</strong><span> did you take to </span><strong>resolve</strong><span> it?</span></p></li></ul><h2 class="header-anchor-post">Days 3-4: Linux/Unix Systems<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§days-3-4-linuxunix-systems" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/days-3-4-linuxunix-systems" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h2><p>this section is tailored to gauge the understanding and practical experience of candidates with system administration, particularly in Unix/Linux environments. it covers a range of topics from basic system operations, troubleshooting, to automation and system security, which are all critical aspects of an SRE's role.</p><h3 class="header-anchor-post">Resources<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§resources" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/resources" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h3><ul><li><p><a href="https://www.redhat.com/sysadmin/skills-linux-sysadmin">10 skills every system administrator should know</a></p></li><li><p><a href="https://www.digitalocean.com/community/tutorials/linux-commands">Top 50+ linux commands you must know</a></p></li><li><p><a href="https://www.thegeekstuff.com/2011/02/linux-boot-process/">Linux boot process</a></p></li><li><p><a href="https://www.amazon.com/How-Linux-Works-Brian-Ward/dp/1718500408">How Linux Works</a><span> (book)</span></p></li><li><p><a href="https://www.amazon.com/Linux-Command-Line-2nd-Introduction/dp/1593279523">The linux Command Line</a><span> (book)</span></p></li></ul><h3 class="header-anchor-post">SRE Questions &amp; Problems:<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§sre-questions-and-problems" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/sre-questions-and-problems" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h3><ul><li><p><span>What are the key </span><strong>responsibilities</strong><span> of a System Administrator in </span><strong>maintaining</strong><span> a </span><strong>reliable</strong><span> and efficient infrastructure?</span></p></li><li><p><span>Describe the Linux </span><strong>boot</strong><span> process. What are the key </span><strong>stages</strong><span> and what happens at each stage?</span></p></li><li><p><span>How would you </span><strong>monitor</strong><span> system </span><strong>performance</strong><span> on a Linux server? Mention any </span><strong>tools</strong><span> or </span><strong>commands</strong><span> you would use.</span></p></li><li><p><span>Explain the difference between </span><strong>hard</strong><span> and </span><strong>soft</strong><span> links in Unix/Linux. Provide a scenario where one would be </span><strong>preferred</strong><span> over the other.</span></p></li><li><p><span>What are some common performance </span><strong>bottlenecks</strong><span> in a Unix/Linux system and how would you </span><strong>diagnose</strong><span> and address them?</span></p></li><li><p><span>Describe a </span><strong>situation</strong><span> where you had to </span><strong>troubleshoot</strong><span> a critical issue on a Linux server. What steps did you take to </span><strong>identify</strong><span> and </span><strong>resolve</strong><span> the issue?</span></p></li><li><p><span>Explain the importance of user and group </span><strong>permissions</strong><span> in Unix/Linux. How would you </span><strong>set</strong><span> or modify file permissions from the </span><strong>command</strong><span> line?</span></p></li><li><p><span>What are the key differences between </span><strong>process</strong><span>, </span><strong>thread</strong><span>, and </span><strong>task</strong><span> in the context of Unix/Linux </span><strong>operating</strong><span> systems?</span></p></li><li><p><span>Describe your experience with </span><strong>automation</strong><span> in system administration tasks. What tools or </span><strong>scripts</strong><span> have you used to automate </span><strong>repetitive</strong><span> tasks?</span></p></li><li><p><span>How would you set up a </span><strong>backup</strong><span> and </span><strong>recovery</strong><span> plan for critical systems in a Unix/Linux environment? What </span><strong>considerations</strong><span> would you take into account?</span></p></li></ul><h2 class="header-anchor-post">Days 5-7: Networking Fundamentals<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§days-5-7-networking-fundamentals" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/days-5-7-networking-fundamentals" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h2><p>The last 3 days in the first week aim to strengthen the foundational knowledge and practical experience in networking, which is a critical aspect of Site Reliability Engineering. Networking fundamentals covers a range topics from basic networking principles, troubleshooting network issues, to implementing network security measures, all crucial for ensuring reliable and efficient system operations in an SRE role.</p><div class="captioned-image-container"><figure><a target="_blank" href="https://substackcdn.com/image/fetch/$s_!iYjo!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg" data-component-name="Image2ToDOM" class="image-link image2 is-viewable-img can-restack"><div class="image2-inset"><picture><source type="image/webp" srcset="https://substackcdn.com/image/fetch/$s_!iYjo!,w_424,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 424w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_848,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 848w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1272,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1272w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1456,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1456w" sizes="100vw"/><img src="https://substackcdn.com/image/fetch/$s_!iYjo!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg" width="1526" height="926" data-attrs="{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:926,&quot;width&quot;:1526,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:null,&quot;alt&quot;:&quot;HTTP/1 vs HTTP/2 vs HTTP/3&quot;,&quot;title&quot;:null,&quot;type&quot;:null,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:null,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}" alt="HTTP/1 vs HTTP/2 vs HTTP/3" title="HTTP/1 vs HTTP/2 vs HTTP/3" srcset="https://substackcdn.com/image/fetch/$s_!iYjo!,w_424,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 424w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_848,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 848w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1272,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1272w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1456w" sizes="100vw" loading="lazy" class="sizing-normal"/></picture><div class="image-link-expand"><div class="pencraft pc-display-flex pc-gap-8 pc-reset"><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container restack-image"><svg aria-hidden="true" width="20" height="20" viewBox="0 0 20 20" fill="none" stroke-width="1.5" stroke="var(--color-fg-primary)" stroke-linecap="round" stroke-linejoin="round" xmlns="http://www.w3.org/2000/svg"><g><path d="M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882"></path></g></svg></button><button tabindex="0" type="button" class="pencraft pc-reset pencraft icon-container view-image"><svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-maximize2 lucide-maximize-2"><polyline points="15 3 21 3 21 9"></polyline><polyline points="9 21 3 21 3 15"></polyline><line x1="21" x2="14" y1="3" y2="10"></line><line x1="3" x2="10" y1="21" y2="14"></line></svg></button></div></div></div></a><figcaption class="image-caption">HTTP/1 vs HTTP/2 vs HTTP/3</figcaption></figure></div><h3 class="header-anchor-post">Resources<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§resources" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/resources" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h3><ul><li><ul><li><p><a href="https://github.com/alex/what-happens-when">What happens When you type google.com into your browser</a></p></li><li><p><a href="https://www.digitalocean.com/community/tutorials/http-1-1-vs-http-2-what-s-the-difference">HTTP/1.1 vs HTTP/2</a></p></li><li><p><a href="https://grpc.io/docs/guides/">Grpc guides</a></p></li><li><p><a href="https://www.youtube.com/watch?v=27r4Bzuj5NQ&amp;ab_channel=ByteByteGo">DNS crash course</a></p></li><li><p><a href="http://www.tcpipguide.com/free/index.htm">The TCP/IP Guide</a><span> (book)</span></p></li><li><p><a href="https://www.amazon.com/HTTP-2-Action-Barry-Pollard/dp/1617295167">HTTP/2 in Action</a><span> (book)</span></p></li></ul></li></ul><h3 class="header-anchor-post">SRE Questions &amp; Problems<div class="pencraft pc-display-flex pc-alignItems-center pc-position-absolute pc-reset header-anchor-parent"><div class="pencraft pc-display-contents pc-reset pubTheme-yiXxQA"><div id="§sre-questions-and-problems" class="pencraft pc-reset header-anchor offset-top"></div><button tabindex="0" type="button" aria-label="Link" data-href="https://www.codereliant.io/i/154340188/sre-questions-and-problems" class="pencraft pc-reset pencraft iconButton-mq_Et5 iconButtonBase-dJGHgN buttonBase-GK1x3M buttonStyle-r7yGCK size_sm-G3LciD priority_secondary-S63h9o"><svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-link"><path d="M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71"></path><path d="M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71"></path></svg></button></div></div></h3><ul><li><p><span>Explain the </span><strong>OSI</strong><span> Model and how it's relevant to </span><strong>troubleshooting</strong><span> network issues.</span></p></li><li><p><span>Describe the difference between </span><strong>TCP</strong><span> and </span><strong>UDP</strong><span>. Can you provide a scenario where one would be </span><strong>preferred</strong><span> over the other?</span></p></li><li><p><span>How would you diagnose and troubleshoot a network </span><strong>latency</strong><span> issue in a </span><strong>distributed</strong><span> system? What </span><strong>tools</strong><span> or </span><strong>techniques</strong><span> would you use?</span></p></li><li><p><span>Explain the concept of </span><strong>subnetting</strong><span>, and why it's important in network </span><strong>design</strong><span>. Can you provide an example?</span></p></li><li><p><span>Describe a time you had to troubleshoot a </span><strong>complex</strong><span> networking issue. What </span><strong>steps</strong><span> did you take to </span><strong>identify</strong><span> and </span><strong>resolve</strong><span> the problem?</span></p></li><li><p><span>What is the </span><strong>role</strong><span> of </span><strong>DNS</strong><span> in a network, and how does it </span><strong>work</strong><span>?</span></p></li><li><p><span>Describe any experience you have with </span><strong>configuring</strong><span> or </span><strong>troubleshooting</strong><span> </span><strong>firewalls</strong><span> and/or </span><strong>load balancers</strong><span>.</span></p></li><li><p>Explain the difference between HTTP/1.1 &amp; HTTP/2?</p></li><li><p><span>List and describe patterns of </span><strong>fault tolerance</strong><span> that help with various networking problems like </span><strong>packet loss</strong><span> or </span><strong>overloaded</strong><span> networks?</span></p></li></ul><p>In the first week of this journey, we jump into core of Site Reliability Engineering (SRE) by exploring its basics, alongside an introduction to System Administration and Networking Fundamentals. The expectations are set high but with a structured approach; understanding the mysteries of Unix/Linux systems and grasping the essentials of networking will be an engaging endeavor.</p><p>For instance, you may encounter problems like diagnosing a misconfigured Linux service or troubleshooting network connectivity issues between servers. Each challenge faced is a stepping stone towards becoming adept SRE. As you navigate through the intricacies of system and network operations, you are not merely preparing for interviews but also building a robust foundation for your SRE career.</p><div><hr/></div><p>As you navigate through the the first week questions and resources, know that more learning awaits you in the weeks to come. 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class=\\\"lucide lucide-maximize2 lucide-maximize-2\\\"><polyline points=\\\"15 3 21 3 21 9\\\"></polyline><polyline points=\\\"9 21 3 21 3 15\\\"></polyline><line x1=\\\"21\\\" x2=\\\"14\\\" y1=\\\"3\\\" y2=\\\"10\\\"></line><line x1=\\\"3\\\" x2=\\\"10\\\" y1=\\\"21\\\" y2=\\\"14\\\"></line></svg></button></div></div></div></a></figure></div><ul><li><p>Week 1: <a href=\\\"https://www.codereliant.io/p/sre-interview-prep-plan-week-1\\\">Fundamentals of SRE</a> (This post)</p></li><li><p>Week 2: <a href=\\\"https://www.codereliant.io/p/sre-interview-prep-plan-week-2\\\">Automation &amp; Scripting</a></p></li><li><p>Week 3: <a href=\\\"https://www.codereliant.io/p/sre-interview-prep-plan-week-3\\\">Monitoring, Logging, and Alerting</a></p></li><li><p>Week 4: <a href=\\\"https://www.codereliant.io/p/sre-interview-prep-plan-week-4\\\">Incident Management Lifecycle</a></p></li><li><p>Week 5: <a href=\\\"https://www.codereliant.io/p/sre-interview-prep-plan-week-5\\\">Scalability, Performance, &amp; System Design</a></p></li><li><p>Week 6: <a href=\\\"https://www.codereliant.io/p/sre-interview-prep-plan-week-6\\\">Mock Interviews and Revision</a></p></li></ul><p>The idea of interviewing for an SRE role can seem intimidating. These jobs are highly competitive in the current market and you need to demonstrate skills across a ton of technical areas.</p><p>This 6-week plan we've put together will help guide you through the process so you can really excel in those interviews. We'll spend each week focusing on building up your expertise in the key areas SREs need to know, like automation, monitoring, incident response, etc.</p><p>The structured plan enables both aspiring and seasoned engineers to gradually develop a robust SRE foundation. Novices can learn core concepts while professionals can transition roles. By the end of the 6 weeks, participants will gain deeper understanding to ace interviews. The roadmap polishes problem-solving and prepares candidates to shine technically and behaviorally in SRE interviews through a progressive plan.</p><h2>Days 1-2: Introduction to SRE</h2><p>First 2 days are mainly about understanding what the SRE role is about, the value that an SRE bring to a product, team, and organization. In addition, the various problems SREs help solve, and they fit in the software engineering puzzle.</p><h3>Resources</h3><ul><li><p><a href=\\\"https://sre.google/workbook/how-sre-relates/\\\">How SRE Relates to Devops</a></p></li><li><p><a href=\\\"https://sre.google/sre-book/introduction/\\\">Intro to SRE</a></p></li><li><p><a href=\\\"https://sre.google/sre-book/embracing-risk/\\\">Managing &amp; Embracing Risk</a></p></li><li><p><a href=\\\"https://sre.google/sre-book/eliminating-toil/\\\">Eliminating Toil</a></p></li><li><p><a href=\\\"https://sre.google/sre-book/communication-and-collaboration/\\\">Communication &amp; Collaboration in SRE</a></p></li></ul><h3>SRE Questions &amp; Problems:</h3><ul><li><p>Can you describe to me the <strong>role</strong> of an SRE?</p></li><li><p>How does an SRE <strong>differs</strong> from a system <strong>admin</strong> or a <strong>devops</strong> engineer?</p></li><li><p>What is Site Reliability Engineering and how does it differ from <strong>traditional IT</strong> operations?</p></li><li><p>SRE are known as <strong>gatekeepers</strong>. How can they balance reliability and the pace of <strong>innovation</strong>?</p></li><li><p>How would you explain the principle of \\\"<strong>Automation</strong> over Manual Work\\\" in SRE? Can you provide an example where <strong>automation</strong> significantly improved <strong>operational efficiency</strong>?</p></li><li><p>In your opinion, what are the key <strong>skills</strong> and <strong>traits</strong> an SRE should possess? How have you demonstrated these in your previous <strong>experiences</strong>?</p></li><li><p>Explain the concept of \\\"<strong>Toil</strong>\\\" in SRE. How can toil be <strong>measured</strong> and <strong>reduced</strong> in an operational environment?</p></li><li><p>Describe a <strong>challenging</strong> technical problem you encountered in your previous role. How did you approach the problem, and what <strong>steps</strong> did you take to <strong>resolve</strong> it?</p></li></ul><h2>Days 3-4: Linux/Unix Systems</h2><p>this section is tailored to gauge the understanding and practical experience of candidates with system administration, particularly in Unix/Linux environments. it covers a range of topics from basic system operations, troubleshooting, to automation and system security, which are all critical aspects of an SRE's role.</p><h3>Resources</h3><ul><li><p><a href=\\\"https://www.redhat.com/sysadmin/skills-linux-sysadmin\\\">10 skills every system administrator should know</a></p></li><li><p><a href=\\\"https://www.digitalocean.com/community/tutorials/linux-commands\\\">Top 50+ linux commands you must know</a></p></li><li><p><a href=\\\"https://www.thegeekstuff.com/2011/02/linux-boot-process/\\\">Linux boot process</a></p></li><li><p><a href=\\\"https://www.amazon.com/How-Linux-Works-Brian-Ward/dp/1718500408\\\">How Linux Works</a> (book)</p></li><li><p><a href=\\\"https://www.amazon.com/Linux-Command-Line-2nd-Introduction/dp/1593279523\\\">The linux Command Line</a> (book)</p></li></ul><h3>SRE Questions &amp; Problems:</h3><ul><li><p>What are the key <strong>responsibilities</strong> of a System Administrator in <strong>maintaining</strong> a <strong>reliable</strong> and efficient infrastructure?</p></li><li><p>Describe the Linux <strong>boot</strong> process. What are the key <strong>stages</strong> and what happens at each stage?</p></li><li><p>How would you <strong>monitor</strong> system <strong>performance</strong> on a Linux server? Mention any <strong>tools</strong> or <strong>commands</strong> you would use.</p></li><li><p>Explain the difference between <strong>hard</strong> and <strong>soft</strong> links in Unix/Linux. Provide a scenario where one would be <strong>preferred</strong> over the other.</p></li><li><p>What are some common performance <strong>bottlenecks</strong> in a Unix/Linux system and how would you <strong>diagnose</strong> and address them?</p></li><li><p>Describe a <strong>situation</strong> where you had to <strong>troubleshoot</strong> a critical issue on a Linux server. What steps did you take to <strong>identify</strong> and <strong>resolve</strong> the issue?</p></li><li><p>Explain the importance of user and group <strong>permissions</strong> in Unix/Linux. How would you <strong>set</strong> or modify file permissions from the <strong>command</strong> line?</p></li><li><p>What are the key differences between <strong>process</strong>, <strong>thread</strong>, and <strong>task</strong> in the context of Unix/Linux <strong>operating</strong> systems?</p></li><li><p>Describe your experience with <strong>automation</strong> in system administration tasks. What tools or <strong>scripts</strong> have you used to automate <strong>repetitive</strong> tasks?</p></li><li><p>How would you set up a <strong>backup</strong> and <strong>recovery</strong> plan for critical systems in a Unix/Linux environment? What <strong>considerations</strong> would you take into account?</p></li></ul><h2>Days 5-7: Networking Fundamentals</h2><p>The last 3 days in the first week aim to strengthen the foundational knowledge and practical experience in networking, which is a critical aspect of Site Reliability Engineering. Networking fundamentals covers a range topics from basic networking principles, troubleshooting network issues, to implementing network security measures, all crucial for ensuring reliable and efficient system operations in an SRE role.</p><div class=\\\"captioned-image-container\\\"><figure><a class=\\\"image-link image2 is-viewable-img\\\" target=\\\"_blank\\\" href=\\\"https://substackcdn.com/image/fetch/$s_!iYjo!,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg\\\" data-component-name=\\\"Image2ToDOM\\\"><div class=\\\"image2-inset\\\"><picture><source type=\\\"image/webp\\\" srcset=\\\"https://substackcdn.com/image/fetch/$s_!iYjo!,w_424,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 424w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_848,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 848w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1272,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1272w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1456,c_limit,f_webp,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1456w\\\" sizes=\\\"100vw\\\"><img src=\\\"https://substackcdn.com/image/fetch/$s_!iYjo!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg\\\" width=\\\"1526\\\" height=\\\"926\\\" data-attrs=\\\"{&quot;src&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg&quot;,&quot;srcNoWatermark&quot;:null,&quot;fullscreen&quot;:null,&quot;imageSize&quot;:null,&quot;height&quot;:926,&quot;width&quot;:1526,&quot;resizeWidth&quot;:null,&quot;bytes&quot;:null,&quot;alt&quot;:&quot;HTTP/1 vs HTTP/2 vs HTTP/3&quot;,&quot;title&quot;:null,&quot;type&quot;:null,&quot;href&quot;:null,&quot;belowTheFold&quot;:true,&quot;topImage&quot;:false,&quot;internalRedirect&quot;:null,&quot;isProcessing&quot;:false,&quot;align&quot;:null,&quot;offset&quot;:false}\\\" class=\\\"sizing-normal\\\" alt=\\\"HTTP/1 vs HTTP/2 vs HTTP/3\\\" title=\\\"HTTP/1 vs HTTP/2 vs HTTP/3\\\" srcset=\\\"https://substackcdn.com/image/fetch/$s_!iYjo!,w_424,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 424w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_848,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 848w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1272,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1272w, https://substackcdn.com/image/fetch/$s_!iYjo!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F354b589d-327c-4cef-a1d4-e73b3b00f8c9_1526x926.jpeg 1456w\\\" sizes=\\\"100vw\\\" loading=\\\"lazy\\\"></picture><div class=\\\"image-link-expand\\\"><div class=\\\"pencraft pc-display-flex pc-gap-8 pc-reset\\\"><button tabindex=\\\"0\\\" type=\\\"button\\\" class=\\\"pencraft pc-reset pencraft icon-container restack-image\\\"><svg aria-hidden=\\\"true\\\" width=\\\"20\\\" height=\\\"20\\\" viewBox=\\\"0 0 20 20\\\" fill=\\\"none\\\" stroke-width=\\\"1.5\\\" stroke=\\\"var(--color-fg-primary)\\\" stroke-linecap=\\\"round\\\" stroke-linejoin=\\\"round\\\" xmlns=\\\"http://www.w3.org/2000/svg\\\"><g><path d=\\\"M2.53001 7.81595C3.49179 4.73911 6.43281 2.5 9.91173 2.5C13.1684 2.5 15.9537 4.46214 17.0852 7.23684L17.6179 8.67647M17.6179 8.67647L18.5002 4.26471M17.6179 8.67647L13.6473 6.91176M17.4995 12.1841C16.5378 15.2609 13.5967 17.5 10.1178 17.5C6.86118 17.5 4.07589 15.5379 2.94432 12.7632L2.41165 11.3235M2.41165 11.3235L1.5293 15.7353M2.41165 11.3235L6.38224 13.0882\\\"></path></g></svg></button><button tabindex=\\\"0\\\" type=\\\"button\\\" class=\\\"pencraft pc-reset pencraft icon-container view-image\\\"><svg xmlns=\\\"http://www.w3.org/2000/svg\\\" width=\\\"20\\\" height=\\\"20\\\" viewBox=\\\"0 0 24 24\\\" fill=\\\"none\\\" stroke=\\\"currentColor\\\" stroke-width=\\\"2\\\" stroke-linecap=\\\"round\\\" stroke-linejoin=\\\"round\\\" class=\\\"lucide lucide-maximize2 lucide-maximize-2\\\"><polyline points=\\\"15 3 21 3 21 9\\\"></polyline><polyline points=\\\"9 21 3 21 3 15\\\"></polyline><line x1=\\\"21\\\" x2=\\\"14\\\" y1=\\\"3\\\" y2=\\\"10\\\"></line><line x1=\\\"3\\\" x2=\\\"10\\\" y1=\\\"21\\\" y2=\\\"14\\\"></line></svg></button></div></div></div></a><figcaption class=\\\"image-caption\\\">HTTP/1 vs HTTP/2 vs HTTP/3</figcaption></figure></div><h3>Resources</h3><ul><li><ul><li><p><a href=\\\"https://github.com/alex/what-happens-when\\\">What happens When you type google.com into your browser</a></p></li><li><p><a href=\\\"https://www.digitalocean.com/community/tutorials/http-1-1-vs-http-2-what-s-the-difference\\\">HTTP/1.1 vs HTTP/2</a></p></li><li><p><a href=\\\"https://grpc.io/docs/guides/\\\">Grpc guides</a></p></li><li><p><a href=\\\"https://www.youtube.com/watch?v=27r4Bzuj5NQ&amp;ab_channel=ByteByteGo\\\">DNS crash course</a></p></li><li><p><a href=\\\"http://www.tcpipguide.com/free/index.htm\\\">The TCP/IP Guide</a> (book)</p></li><li><p><a href=\\\"https://www.amazon.com/HTTP-2-Action-Barry-Pollard/dp/1617295167\\\">HTTP/2 in Action</a> (book)</p></li></ul></li></ul><h3>SRE Questions &amp; Problems</h3><ul><li><p>Explain the <strong>OSI</strong> Model and how it's relevant to <strong>troubleshooting</strong> network issues.</p></li><li><p>Describe the difference between <strong>TCP</strong> and <strong>UDP</strong>. Can you provide a scenario where one would be <strong>preferred</strong> over the other?</p></li><li><p>How would you diagnose and troubleshoot a network <strong>latency</strong> issue in a <strong>distributed</strong> system? What <strong>tools</strong> or <strong>techniques</strong> would you use?</p></li><li><p>Explain the concept of <strong>subnetting</strong>, and why it's important in network <strong>design</strong>. Can you provide an example?</p></li><li><p>Describe a time you had to troubleshoot a <strong>complex</strong> networking issue. What <strong>steps</strong> did you take to <strong>identify</strong> and <strong>resolve</strong> the problem?</p></li><li><p>What is the <strong>role</strong> of <strong>DNS</strong> in a network, and how does it <strong>work</strong>?</p></li><li><p>Describe any experience you have with <strong>configuring</strong> or <strong>troubleshooting</strong> <strong>firewalls</strong> and/or <strong>load balancers</strong>.</p></li><li><p>Explain the difference between HTTP/1.1 &amp; HTTP/2?</p></li><li><p>List and describe patterns of <strong>fault tolerance</strong> that help with various networking problems like <strong>packet loss</strong> or <strong>overloaded</strong> networks?</p></li></ul><p>In the first week of this journey, we jump into core of Site Reliability Engineering (SRE) by exploring its basics, alongside an introduction to System Administration and Networking Fundamentals. The expectations are set high but with a structured approach; understanding the mysteries of Unix/Linux systems and grasping the essentials of networking will be an engaging endeavor.</p><p>For instance, you may encounter problems like diagnosing a misconfigured Linux service or troubleshooting network connectivity issues between servers. Each challenge faced is a stepping stone towards becoming adept SRE. As you navigate through the intricacies of system and network operations, you are not merely preparing for interviews but also building a robust foundation for your SRE career.</p><div><hr></div><p>As you navigate through the the first week questions and resources, know that more learning awaits you in the weeks to come. 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