Question 430
At Briarwood Property Group, a team reports that it corrected the following problem affecting tenant applications and facility services: A network automation service modifies device configuration over an unauthenticated legacy protocol. Which observation BEST verifies that the correction actually worked?
Explanation
Correct Answer
An authorized test changes only an approved configuration subtree and an untrusted client is denied. This is the decisive evidence for the original problem: A network automation service modifies device configuration over an unauthenticated legacy protocol. It verifies that the intended corrective control—Adopt authenticated, encrypted NETCONF or RESTCONF transport with role-specific permissions—works in the relevant environment; a completed change ticket alone would not prove the outcome at Briarwood Property Group.
Incorrect Answers
A backup transfer is encrypted and stored with access and integrity controls. This would be relevant evidence for a different failure: Administrators transfer backups over unencrypted FTP to a shared server, usually addressed by Use SCP or SFTP to protected storage with least-privilege service credentials. It does not demonstrate that the current problem at Briarwood Property Group was resolved. The specific required evidence is: An authorized test changes only an approved configuration subtree and an untrusted client is denied.
A packet inspection shows protected monitoring traffic and a v2c attempt is rejected. This would be relevant evidence for a different failure: Monitoring credentials are sent in plaintext SNMPv2c strings across untrusted paths, usually addressed by Use SNMPv3 authPriv where supported and restrict manager addresses. It does not demonstrate that the current problem at Briarwood Property Group was resolved. The specific required evidence is: An authorized test changes only an approved configuration subtree and an untrusted client is denied.
The collector receives trustworthy events while a forged or unprotected feed is rejected. This would be relevant evidence for a different failure: A security appliance's syslog packets cross an untrusted segment without integrity or confidentiality controls, usually addressed by Use protected syslog transport and authenticated collectors according to supported capabilities. It does not demonstrate that the current problem at Briarwood Property Group was resolved. The specific required evidence is: An authorized test changes only an approved configuration subtree and an untrusted client is denied.