[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"me":3,"catalog:en:devops-cloud\u002Fk8s-scheduling-resources":4,"config":253},null,{"field_key":5,"field_name":6,"seniority":7,"topic_key":8,"topic_name":9,"spec_key":7,"spec_name":7,"locale":10,"cell_total":11,"field_total":12,"seniorities":13,"topics":17,"specs":151,"samples":171},"devops-cloud","DevOps \u002F Cloud","","k8s-scheduling-resources","K8s Scheduling Resources","en",75,3375,[14,15,16],"junior","mid","senior",[18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,94,97,100,103,106,109,112,115,118,121,124,127,130,133,136,139,142,145,148],{"key":19,"name":20,"count":11},"aws-compute-ec2-lambda","Aws Compute Ec2 Lambda",{"key":22,"name":23,"count":11},"aws-databases-rds-dynamodb","Aws Databases Rds Dynamodb",{"key":25,"name":26,"count":11},"aws-iam-security","Aws Iam Security",{"key":28,"name":29,"count":11},"aws-messaging-eventing","Aws Messaging 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Cicd",[152,156,159,162,165,168],{"key":153,"name":154,"count":155},"aws","AWS",450,{"key":157,"name":158,"count":155},"azure","Azure",{"key":160,"name":161,"count":155},"gcp","GCP",{"key":163,"name":164,"count":155},"kubernetes","Kubernetes",{"key":166,"name":167,"count":155},"linux","Linux",{"key":169,"name":170,"count":155},"terraform","Terraform",[172,190,204,217,230,243],{"id":173,"topic":9,"difficulty":174,"body":175,"options":176,"correct_key":181,"explanation":189},"019f651a-7d34-74be-8c92-bb6e52301d72",1,"In a Pod's container spec, what is the core difference between `resources.requests` and `resources.limits`?",[177,180,183,186],{"key":178,"text":179},"a","Both fields are used only by the kubelet to enforce a hard ceiling on usage at runtime.",{"key":181,"text":182},"b","`requests` are used by the scheduler to find a node with capacity; `limits` are enforced by the kubelet at runtime.",{"key":184,"text":185},"c","`requests` are enforced by the kubelet as a runtime ceiling; `limits` are only used by the scheduler.",{"key":187,"text":188},"d","`requests` and `limits` are interchangeable fields with no functional difference.","The scheduler reads `requests` to decide which node has enough reservable capacity for the Pod. `limits` are enforced independently by the kubelet\u002Fcontainer runtime while the container is running, regardless of which node it landed on.",{"id":191,"topic":9,"difficulty":192,"body":193,"options":194,"correct_key":178,"explanation":203},"019f651a-7d34-7df7-a903-ddacde6230b3",2,"A container's actual CPU usage tries to exceed its `resources.limits.cpu` value. What happens to the container?",[195,197,199,201],{"key":178,"text":196},"It keeps running but its CPU usage is throttled to stay within the limit.",{"key":181,"text":198},"The kubelet immediately terminates the container with reason OOMKilled.",{"key":184,"text":200},"The Pod is evicted and rescheduled onto a different node right away.",{"key":187,"text":202},"The container restarts regardless of the Pod's configured restart policy.","CPU is a compressible resource. Exceeding a CPU limit results in CFS throttling of the process, not termination — unlike memory, there is no kill mechanism for CPU overuse.",{"id":205,"topic":9,"difficulty":174,"body":206,"options":207,"correct_key":184,"explanation":216},"019f651a-7d35-766e-b713-9c656b34b366","A container's actual memory usage exceeds its `resources.limits.memory` value. What is the typical outcome?",[208,210,212,214],{"key":178,"text":209},"The container is throttled the same way CPU overuse is throttled, without being restarted.",{"key":181,"text":211},"The Pod moves to Pending state until more memory becomes available on the node.",{"key":184,"text":213},"The container process is killed by the kernel, and its last state shows reason OOMKilled.",{"key":187,"text":215},"The limit is silently ignored and the container keeps consuming memory beyond it.","Memory is a non-compressible resource. When usage crosses the container's memory limit, the kernel's OOM killer terminates the process, and `kubectl describe pod` reports the container's last terminated state as OOMKilled.",{"id":218,"topic":9,"difficulty":192,"body":219,"options":220,"correct_key":187,"explanation":229},"019f651a-7d36-701f-8217-a3feff859e61","You apply this Pod on a single-node cluster where the node has far less than 100Gi of allocatable memory:\n```yaml\napiVersion: v1\nkind: Pod\nmetadata:\n  name: big-request\nspec:\n  containers:\n  - name: busybox\n    image: busybox\n    command: [\"sleep\", \"3600\"]\n    resources:\n      requests:\n        memory: \"100Gi\"\n        cpu: \"500m\"\n```\n`kubectl get pod big-request` shows STATUS `Pending`. What does the Events section of `kubectl describe pod big-request` most likely show?",[221,223,225,227],{"key":178,"text":222},"Warning ImagePullBackOff: back-off pulling image \"busybox\"",{"key":181,"text":224},"Warning CrashLoopBackOff: back-off restarting failed container",{"key":184,"text":226},"Warning FailedScheduling: 0\u002F1 nodes are available: 1 Insufficient cpu.",{"key":187,"text":228},"Warning FailedScheduling: 0\u002F1 nodes are available: 1 Insufficient memory.","The requested 100Gi of memory exceeds what the single node can offer, so the scheduler cannot place the Pod. The Events section reports a FailedScheduling warning naming the exact resource that could not be satisfied — here, memory, not CPU.",{"id":231,"topic":9,"difficulty":192,"body":232,"options":233,"correct_key":178,"explanation":242},"019f651a-7d36-7b41-97ae-532ad2811f42","A Pod has a single container where `resources.requests` and `resources.limits` are set to the exact same values for both CPU and memory. What QoS class does Kubernetes assign to this Pod?",[234,236,238,240],{"key":178,"text":235},"Guaranteed",{"key":181,"text":237},"Burstable",{"key":184,"text":239},"BestEffort",{"key":187,"text":241},"Reserved (a class Kubernetes uses only for control-plane Pods)","A Pod gets the Guaranteed QoS class only when every container specifies requests equal to limits for both CPU and memory. \"Reserved\" is not a real Kubernetes QoS class.",{"id":244,"topic":9,"difficulty":192,"body":245,"options":246,"correct_key":181,"explanation":252},"019f651a-7d37-74c8-9932-db91e419b96f","A Pod's container sets `resources.requests.memory` to a value lower than `resources.limits.memory` (and\u002For requests are set without matching limits on every resource). What QoS class does the Pod get?",[247,248,249,250],{"key":178,"text":235},{"key":181,"text":237},{"key":184,"text":239},{"key":187,"text":251},"The Pod cannot be scheduled unless requests exactly match limits.","When at least one container has requests set but they don't equal limits across every resource type, the Pod falls into the Burstable class — between Guaranteed (requests==limits everywhere) and BestEffort (nothing set).",{"fields":254,"seniorities":426,"interview_shapes":427,"locales":432,"oauth":434,"question_count":437,"coach_enabled":438,"jd_match_enabled":438},[255,280,300,317,327,340,359,378,400,407,413,420],{"key":256,"name_tr":257,"name_en":257,"sort":174,"specializations":258},"backend","Backend",[259,262,265,268,271,274,277],{"key":260,"name":261,"field":256},"general","Genel",{"key":263,"name":264,"field":256},"go","Go",{"key":266,"name":267,"field":256},"python","Python",{"key":269,"name":270,"field":256},"java","Java",{"key":272,"name":273,"field":256},"csharp","C#\u002F.NET",{"key":275,"name":276,"field":256},"nodejs","Node.js",{"key":278,"name":279,"field":256},"php","PHP",{"key":281,"name_tr":282,"name_en":282,"sort":192,"specializations":283},"frontend","Frontend",[284,285,288,291,294,297],{"key":260,"name":261,"field":281},{"key":286,"name":287,"field":281},"javascript","JavaScript",{"key":289,"name":290,"field":281},"typescript","TypeScript",{"key":292,"name":293,"field":281},"react","React",{"key":295,"name":296,"field":281},"vue","Vue",{"key":298,"name":299,"field":281},"angular","Angular",{"key":301,"name_tr":302,"name_en":302,"sort":303,"specializations":304},"fullstack","Fullstack",3,[305,306,307,308,309,310,311,312,313,314,315,316],{"key":260,"name":261,"field":301},{"key":263,"name":264,"field":256},{"key":266,"name":267,"field":256},{"key":269,"name":270,"field":256},{"key":272,"name":273,"field":256},{"key":275,"name":276,"field":256},{"key":278,"name":279,"field":256},{"key":286,"name":287,"field":281},{"key":289,"name":290,"field":281},{"key":292,"name":293,"field":281},{"key":295,"name":296,"field":281},{"key":298,"name":299,"field":281},{"key":5,"name_tr":6,"name_en":6,"sort":318,"specializations":319},4,[320,321,322,323,324,325,326],{"key":260,"name":261,"field":5},{"key":153,"name":154,"field":5},{"key":160,"name":161,"field":5},{"key":157,"name":158,"field":5},{"key":163,"name":164,"field":5},{"key":169,"name":170,"field":5},{"key":166,"name":167,"field":5},{"key":328,"name_tr":329,"name_en":329,"sort":330,"specializations":331},"ai-engineer","AI Engineer",5,[332,333,334,337],{"key":260,"name":261,"field":328},{"key":266,"name":267,"field":328},{"key":335,"name":336,"field":328},"llm-rag","LLM\u002FRAG",{"key":338,"name":339,"field":328},"mlops","MLOps",{"key":341,"name_tr":342,"name_en":343,"sort":344,"specializations":345},"database","Veritabanı","Database",6,[346,347,350,353,356],{"key":260,"name":261,"field":341},{"key":348,"name":349,"field":341},"postgresql","PostgreSQL",{"key":351,"name":352,"field":341},"mysql","MySQL",{"key":354,"name":355,"field":341},"mongodb","MongoDB",{"key":357,"name":358,"field":341},"redis","Redis",{"key":360,"name_tr":361,"name_en":362,"sort":363,"specializations":364},"mobile","Mobil","Mobile",7,[365,366,369,372,375],{"key":260,"name":261,"field":360},{"key":367,"name":368,"field":360},"ios-swift","iOS (Swift)",{"key":370,"name":371,"field":360},"android-kotlin","Android (Kotlin)",{"key":373,"name":374,"field":360},"flutter","Flutter",{"key":376,"name":377,"field":360},"react-native","React Native",{"key":379,"name_tr":380,"name_en":381,"sort":382,"specializations":383},"security","Güvenlik","Security",8,[384,385,388,391,394,397],{"key":260,"name":261,"field":379},{"key":386,"name":387,"field":379},"appsec","AppSec",{"key":389,"name":390,"field":379},"offensive-pentest","Offensive \u002F Pentest",{"key":392,"name":393,"field":379},"cloud-security","Cloud Security",{"key":395,"name":396,"field":379},"devsecops","DevSecOps",{"key":398,"name":399,"field":379},"blue-team-incident","Blue Team \u002F Incident",{"key":401,"name_tr":402,"name_en":403,"sort":404,"specializations":405},"qa-test-automation","QA \u002F Test Otomasyonu","QA \u002F Test Automation",9,[406],{"key":260,"name":261,"field":401},{"key":408,"name_tr":409,"name_en":409,"sort":410,"specializations":411},"data-engineer","Data Engineer",10,[412],{"key":260,"name":261,"field":408},{"key":414,"name_tr":415,"name_en":416,"sort":417,"specializations":418},"game-dev","Oyun Geliştirme","Game Development",11,[419],{"key":260,"name":261,"field":414},{"key":421,"name_tr":422,"name_en":422,"sort":423,"specializations":424},"ml-engineer","ML Engineer",12,[425],{"key":260,"name":261,"field":421},[14,15,16],{"junior":428,"mid":430,"senior":431},{"questions":429,"median_sec":3},20,{"questions":429,"median_sec":3},{"questions":429,"median_sec":3},[433,10],"tr",[435,436],"google","github",21750,true]