Master Infoblox NIOS-DDI-Expert Exam with Reliable Practice Questions
Upgrade to PremiumTo revert to an older version of code, the user must be able to upgrade from that older version of code to the code the Infoblox device is currently running.
Correct : A
Comprehensive and Detailed In-Depth
Reverting in NIOS (Grid > Upgrade > Revert) rolls back to the previous version:
Requirement: The older version must be compatible with an upgrade path to the current version. NIOS stores the prior image and database, ensuring revertibility if the upgrade was valid (e.g., 8.6.1 to 8.6.2).
Why True: If the older version couldn't upgrade to the current one (e.g., due to major schema changes or skipped versions), revert wouldn't be offered---NIOS enforces this compatibility.
Practical Example: In an INE lab, you'd upgrade from 8.6.1 to 8.6.2, revert to 8.6.1, and troubleshoot DNS continuity, verifying this rule.
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After making a configuration change on the NIOS Grid, you are prompted to restart services. What option provides the least service disruption?
Correct : B
Comprehensive and Detailed In-Depth
Restarting services post-change (e.g., DNS zone update) requires minimizing downtime:
B: ''Restart if needed'' checks if a restart is required per member, and ''sequentially'' staggers restarts (e.g., passive HA nodes first), ensuring continuous service. Least disruptive. Correct.
A: Simultaneous force restart stops all services at once---maximum disruption. Incorrect.
C: GM-only restart ignores other members needing updates, incomplete. Incorrect.
D: HA members only misses single nodes or GM, partial solution. Incorrect.
Practical Example: In an INE lab, you'd select sequential restart after a DHCP range change, monitor client connectivity, and troubleshoot minimal impact.
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What does VRRP stand for?
Correct : D
Comprehensive and Detailed In-Depth
VRRP is the protocol Infoblox uses for HA:
D: Virtual Router Redundancy Protocol (RFC 3768) provides IP redundancy by sharing a virtual IP (VIP) between routers (or NIOS nodes). Correct.
A/B/C: Fictional acronyms---VRRP is a well-defined standard. Incorrect.
Practical Example: In an INE lab, you'd configure VRRP for an HA pair, test failover, and troubleshoot VRRP packets, reinforcing HA concepts.
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How can an administrator access the NIOS Online Documentation through the Grid Manager UI?
Correct : D
Comprehensive and Detailed In-Depth
NIOS Online Documentation is accessible via Grid Manager:
D: Help > Documentation > NIOS Online Documentation opens a browser to the latest NIOS docs (e.g., Admin Guide) hosted online or locally. Correct.
A: Logs > Download is for syslog/support bundles, not docs. Incorrect.
B: Tools > Support Bundle is diagnostics, not documentation. Incorrect.
C: No ''Download Admin guide'' option exists under Tools. Incorrect.
Practical Example: In an INE lab, you'd access docs via Help to troubleshoot a Grid join issue, testing resource navigation.
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When scheduling a Member upgrade, what can an administrator select for the upgrade start time?
Correct : A
Comprehensive and Detailed In-Depth
Scheduling upgrades in NIOS (Grid > Upgrade > Schedule):
A: Admins set a specific Date/Time (e.g., ''2025-03-14 01:00'') for each member or group, controlling exact start times. Correct.
B/C: ''Before/After Grid Master'' isn't a UI option---sequence is managed via Upgrade Groups, not time settings. Incorrect.
D: ''After Default'' isn't a term in NIOS scheduling. Incorrect.
Practical Example: In an INE lab, you'd schedule a member upgrade for 2 AM, test staggered rollout, and troubleshoot timing issues.
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