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Question 740
An engineer proposes a complex VSX change with no second review. Which process helps detect risk?
- Provide tested rollback criteria
- Use a controlled maintenance window
- Require approval and peer review
- Document change scope and business impact
Explanation
Correct Answer
C:Have a qualified reviewer validate design and commands before applying. A second qualified reviewer can catch incorrect commands, missing ACLs, and rollback gaps.
Incorrect Answers
A:Clear failure thresholds and recovery instructions prevent uncontrolled troubleshooting in production. But this does not address the case requirement to use peer-review and approval control.
B:Coordinate service-impacting changes with stakeholders and scheduled recovery availability. But this does not address the case requirement to use peer-review and approval control.
D:The proposed maintenance must list affected sites, users, dependencies and risk boundaries. But this does not address the case requirement to use peer-review and approval control.
Question 741
A switching change would interrupt access to branch employees during peak trading. What scheduling control is necessary?
- Require approval and peer review
- Capture before-and-after validation evidence
- Use a controlled maintenance window
- Update operational runbook and handoff
Explanation
Correct Answer
C:Execute in a coordinated maintenance window with recovery staffing. Coordinate service-impacting changes with stakeholders and scheduled recovery availability.
Incorrect Answers
A:A second qualified reviewer can catch incorrect commands, missing ACLs, and rollback gaps. But this does not address the case requirement to avoid unnecessary business-hour outage.
B:Prechange and postchange measures prove whether intended service remained healthy. But this does not address the case requirement to avoid unnecessary business-hour outage.
D:The runbook should record exactly what changed and how future operators can maintain it. But this does not address the case requirement to avoid unnecessary business-hour outage.
Question 742
A team cannot tell if latency changed after new QoS policy because no baseline exists. What testing evidence was missing?
- Document change scope and business impact
- Use a controlled maintenance window
- Provide tested rollback criteria
- Capture before-and-after validation evidence
Explanation
Correct Answer
D:Record comparable before-and-after service metrics. Prechange and postchange measures prove whether intended service remained healthy.
Incorrect Answers
A:The proposed maintenance must list affected sites, users, dependencies and risk boundaries. But this does not address the case requirement to measure change effect objectively.
B:Coordinate service-impacting changes with stakeholders and scheduled recovery availability. But this does not address the case requirement to measure change effect objectively.
C:Clear failure thresholds and recovery instructions prevent uncontrolled troubleshooting in production. But this does not address the case requirement to measure change effect objectively.
Question 743
A major routing rewrite proceeds despite no defined restoration trigger. What must be agreed in advance?
- Provide tested rollback criteria
- Update operational runbook and handoff
- Require approval and peer review
- Capture before-and-after validation evidence
Explanation
Correct Answer
A:Establish tested rollback conditions and actions before change. Clear failure thresholds and recovery instructions prevent uncontrolled troubleshooting in production.
Incorrect Answers
B:The runbook should record exactly what changed and how future operators can maintain it. But this does not address the case requirement to recover decisively when acceptance criteria fail.
C:A second qualified reviewer can catch incorrect commands, missing ACLs, and rollback gaps. But this does not address the case requirement to recover decisively when acceptance criteria fail.
D:Prechange and postchange measures prove whether intended service remained healthy. But this does not address the case requirement to recover decisively when acceptance criteria fail.
Question 744
A successful new network configuration is not reflected in the support runbook. What follow-up is needed?
- Document change scope and business impact
- Provide tested rollback criteria
- Update operational runbook and handoff
- Require approval and peer review
Explanation
Correct Answer
C:Update operational documentation and affected support procedures. The runbook should record exactly what changed and how future operators can maintain it.
Incorrect Answers
A:The proposed maintenance must list affected sites, users, dependencies and risk boundaries. But this does not address the case requirement to make the validated design maintainable.
B:Clear failure thresholds and recovery instructions prevent uncontrolled troubleshooting in production. But this does not address the case requirement to make the validated design maintainable.
D:A second qualified reviewer can catch incorrect commands, missing ACLs, and rollback gaps. But this does not address the case requirement to make the validated design maintainable.
Question 745
A ticket only says Upgrade core switch with no affected applications or user groups. What should be included first?
- Update operational runbook and handoff
- Document change scope and business impact
- Provide tested rollback criteria
- Require approval and peer review
Explanation
Correct Answer
B:Define the blast radius and expected business service impact. The proposed maintenance must list affected sites, users, dependencies and risk boundaries.
Incorrect Answers
A:The runbook should record exactly what changed and how future operators can maintain it. But this does not address the case requirement to turn a vague change into a risk-bounded plan.
C:Clear failure thresholds and recovery instructions prevent uncontrolled troubleshooting in production. But this does not address the case requirement to turn a vague change into a risk-bounded plan.
D:A second qualified reviewer can catch incorrect commands, missing ACLs, and rollback gaps. But this does not address the case requirement to turn a vague change into a risk-bounded plan.
Question 746
The project reports the QoS change as successful without recording application behavior before or after. What is the evidence gap?
- Document change scope and business impact
- Update operational runbook and handoff
- Require approval and peer review
- Capture before-and-after validation evidence
Explanation
Correct Answer
D:Comparable baseline and outcome measurements are required. Prechange and postchange measures prove whether intended service remained healthy.
Incorrect Answers
A:The proposed maintenance must list affected sites, users, dependencies and risk boundaries. But this does not address the case requirement to prove performance improvement.
B:The runbook should record exactly what changed and how future operators can maintain it. But this does not address the case requirement to prove performance improvement.
C:A second qualified reviewer can catch incorrect commands, missing ACLs, and rollback gaps. But this does not address the case requirement to prove performance improvement.
Question 747
A change removes a management ACL and disconnects the remote site; no rollback path was planned. Which prevention process was missed?
- Capture before-and-after validation evidence
- Use a controlled maintenance window
- Provide tested rollback criteria
- Require approval and peer review
Explanation
Correct Answer
C:Define and test rollback before executing access-affecting changes. Clear failure thresholds and recovery instructions prevent uncontrolled troubleshooting in production.
Incorrect Answers
A:Prechange and postchange measures prove whether intended service remained healthy. But this does not address the case requirement to prevent unrecoverable changes.
B:Coordinate service-impacting changes with stakeholders and scheduled recovery availability. But this does not address the case requirement to prevent unrecoverable changes.
D:A second qualified reviewer can catch incorrect commands, missing ACLs, and rollback gaps. But this does not address the case requirement to prevent unrecoverable changes.
Question 748
Two switches report the same link incident eight minutes apart even though it occurred simultaneously. What should be checked?
- Apply least-privilege administrator roles
- Retain tamper-aware audit evidence
- Use secure AAA for management access
- Synchronize timestamps with NTP
Explanation
Correct Answer
D:Time synchronization is necessary for reliable event correlation. Correct clock synchronization supports cross-device analysis of events and administrative actions.
Incorrect Answers
A:Operational observers should not hold unrestricted switch configuration permissions. But this does not address the case requirement to align device timestamps.
B:Administrative change events and configuration versions must be recorded for later review. But this does not address the case requirement to align device timestamps.
C:Identity-backed SSH or API authentication links actions to authorized operators. But this does not address the case requirement to align device timestamps.
Question 749
A switch reboots and its local logs are gone, preventing postincident investigation. What collection strategy helps?
- Filter sensitive information in logs
- Apply least-privilege administrator roles
- Export authorized syslog centrally
- Retain tamper-aware audit evidence
Explanation
Correct Answer
C:Forward logs to a durable approved central collector. Centralized durable logs help preserve evidence beyond local retention and device resets.
Incorrect Answers
A:Audit exports must avoid unnecessary credentials, customer identifiers, or secrets. But this does not address the case requirement to retain evidence across device restarts.
B:Operational observers should not hold unrestricted switch configuration permissions. But this does not address the case requirement to retain evidence across device restarts.
D:Administrative change events and configuration versions must be recorded for later review. But this does not address the case requirement to retain evidence across device restarts.
Question 750
A junior operator only needs to read interface errors but has full config-write access. What security control fits?
- Retain tamper-aware audit evidence
- Export authorized syslog centrally
- Apply least-privilege administrator roles
- Synchronize timestamps with NTP
Explanation
Correct Answer
C:Restrict the account to necessary operational privileges. Operational observers should not hold unrestricted switch configuration permissions.
Incorrect Answers
A:Administrative change events and configuration versions must be recorded for later review. But this does not address the case requirement to apply least-privilege admin authorization.
B:Centralized durable logs help preserve evidence beyond local retention and device resets. But this does not address the case requirement to apply least-privilege admin authorization.
D:Correct clock synchronization supports cross-device analysis of events and administrative actions. But this does not address the case requirement to apply least-privilege admin authorization.
HPE Network Switching Professional (HPE7-A08) Practice Tests