Labs & troubleshooting simulations
Practice technical judgment, evidence gathering and troubleshooting order. Choose a scenario, compare your reasoning with a recommended workflow, and track completion.
Completion is saved on this device.
PC powers on but will not boot
Fans spin, but the workstation never reaches the operating system.
Intermittent VLAN connectivity
One department loses gateway access after a switch change.
OSPF adjacency will not form
Two routers on the same link remain stuck without a full adjacency.
Service fails after configuration change
A production Linux service will not start after an edit.
Filesystem at 100%
An application begins failing writes and users report errors.
Suspicious PowerShell chain
Office software launches PowerShell and an outbound connection.
Phishing report triage
A user reports a login-themed email after clicking its link.
EC2 application unreachable
A workload stopped responding after a security-group change.
Azure VM loses application access
A network security rule update blocks a production service.
Risk treatment decision
Leadership must choose a response for a high-impact residual risk.
Emergency change audit
A critical production change bypassed the normal approval path.
Third-party risk decision
A critical vendor has a control gap days before launch.
Authorized web assessment finding
A scanner flags a serious issue during an approved test.
Select a scenario above
Build a repeatable process: scope → evidence → hypothesis → controlled action → verification → documentation.