Problems

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13 of 277 problems

Title	Topic	Acceptance	Difficulty	XP
Who Is Listening on That Port?Go from an open TCP port to the process that owns it and the program it was started from.mediumLinux20 XP	Linux	New	medium	20
Pin a Hostname with /etc/hostsMake a hostname resolve to a fixed IP address on this machine without touching DNS.easyLinux10 XP	Linux	New	easy	10
Persistent Static IP with nmcliYou set a server's address with ip addr add 10.0.5.20/24 dev ens3. It works, but after a reboot the address is gone. The connection profile is named ens3. How dmediumLinux5 XP	Linux	New	medium	5
Publishing PortsA container's web server listens on port 8080. Which command makes it reachable at http://localhost:3000 on the host?easyDocker3 XP	Docker	New	easy	3
Container-to-Container DNSTwo containers, api and db, should talk to each other. Which setup lets api reach the database at hostname db?mediumDocker5 XP	Docker	New	medium	5
Zero-Trust Networking with Default DenyBlock all traffic in and out of a namespace, then allow exactly the flows the app needs, DNS included.hardKubernetes40 XP	Kubernetes	New	hard	40
Route Traffic with the Gateway APIAttach an HTTPRoute to a shared Gateway and send /api and the rest of the site to different Services.mediumKubernetes20 XP	Kubernetes	New	medium	20
Migrate an Ingress to the Gateway APIReplace an Ingress with a Gateway that terminates TLS and an HTTPRoute that routes the same way.hardKubernetes40 XP	Kubernetes	New	hard	40
Service TypesWhich Service type gives Pods a stable cluster-internal virtual IP and DNS name, and is the default?easyKubernetes3 XP	Kubernetes	New	easy	3
Gateway API RolesThe platform team runs a shared Gateway in the infra namespace. Your team wants /orders on that Gateway to reach your orders Service. Which resource do you creaeasyKubernetes3 XP	Kubernetes	New	easy	3
Security Groups Are StatefulA security group allows inbound TCP 443 from anywhere and has no outbound rules that match the client. Will responses to HTTPS requests reach the clients?mediumCloud5 XP	Cloud	New	medium	5
CloudFront and Edge LocationsStatic images and JavaScript are served from an S3 bucket in us-east-1. Users in Asia and Europe complain that pages load slowly. What is the most direct improveasyCloud3 XP	Cloud	New	easy	3
Public vs Private SubnetsDatabase servers in a private subnet need to download OS updates from the internet but must not be reachable from it. What is the standard setup?mediumCloud5 XP	Cloud	New	medium	5