Question 680
An EMS deployment team reports: Help desk staff are unable to patch a compromised endpoint because every network destination is denied. Which administrator action should be taken first?
Explanation
Correct Answer
The selected action isolates the problem described rather than changing unrelated controls. Design limited authorized remediation connectivity for isolated endpoints under an explicit security policy. Underlying reason: Quarantine can require narrow management or recovery exceptions without granting general network access. Confirm resolution by observing: The affected endpoint reaches only approved remediation services and cannot access protected applications.
Incorrect Answers
The proposed action can be useful for 'A compromised endpoint is still able to reach sensitive services because its intended quarantine tag was not assigned.' But that is not the present device state; an appropriate response to the current scenario is design limited authorized remediation connectivity for isolated endpoints under an explicit security policy.
This does not directly test the stated failure. It addresses 'A vulnerability scan tag moves a device to a restrictive group after a policy threshold is exceeded.' where quarantine can be driven by policy-evaluated endpoint compliance conditions, not only confirmed malware. Here the necessary verification is: The affected endpoint reaches only approved remediation services and cannot access protected applications.
That option would be better suited to the separate incident 'An EMS incident dashboard shows a malware alert but there is no corresponding quarantine status on the endpoint.' Its supporting principle is threat detection evidence is not equivalent to a verified network isolation action. In this case the key condition is quarantine can require narrow management or recovery exceptions without granting general network access.