Infoblox NIOS-DDI-Expert Exam Questions

Comprehensive and Detailed In-Depth

DHCP Failover states determine lease assignment:

B (NORMAL): Both peers assign from their pools---full capacity for new clients. Correct.

C (COMMUNICATIONS-INTERRUPTED): Surviving peer assigns new leases within MCLT limits. Correct.

D (PARTNER-DOWN): Single peer takes full pool, assigns new leases freely. Correct.

A (RECOVER DONE): Post-recovery state before NORMAL---typically doesn't assign until synced, but documentation varies. Likely incorrect here unless transitional.

Practical Example: In an INE lab, test each state, monitor new client IPs, and troubleshoot capacity limits.

Comprehensive and Detailed In-Depth

Upgrading a Grid of single members (no HA pairs):

A: Admins define Upgrade Groups or schedules (Grid > Upgrade), choosing the order (e.g., ''Member1 first''). Correct.

B: GM typically upgrades last by default to maintain control, but this can be overridden. Incorrect.

C: Reporting server (if present) has no priority---user-defined. Incorrect.

D: GMC upgrades only if promoted, not inherently first. Incorrect.

Practical Example: In an INE lab, schedule Member2 first, test upgrade, and troubleshoot sequence issues.

Comprehensive and Detailed In-Depth

Generating a support bundle for diagnostics:

B: CLI command set support bundle (space, not underscore) generates and downloads a bundle (.tar.gz) with logs, configs, etc. Correct with typo adjustment.

A: Backup is separate (Grid > Backup)---no bundle extraction. Incorrect.

C: GUI offers download (Grid > Grid Manager > Toolbar > Download Support Bundle), but question specifies action---CLI fits phone context. Partially correct but not best.

D: Support assists but doesn't generate---user action required. Incorrect.

Practical Example: In an INE lab, run set support bundle, transfer it via SCP, and troubleshoot with support.

Comprehensive and Detailed In-Depth

Stealth option in NIOS DNS (Data Management > DNS > Zone > Name Servers):

A: ''Stealth'' hides the server from NS records in the zone file, making it authoritative but unlisted---useful for internal servers. Correct.

B: Zone transfers are controlled by ACLs, not Stealth. Incorrect.

C: Caching is unrelated---Stealth affects visibility, not function. Incorrect.

D: Response behavior isn't altered---still answers queries. Incorrect.

Practical Example: In an INE lab, set a stealth NS, verify NS record absence, and troubleshoot external visibility.

Comprehensive and Detailed In-Depth

DNS Views in NIOS allow multiple DNS perspectives (e.g., internal vs. external):

Architecture: NIOS supports multiple views per member---common for consolidating services (e.g., one appliance handles ''Internal'' and ''External'' views). ''One member, one view'' isn't a standard or recommended limit.

Why False: Best practice is flexible---views depend on use case, not a strict 1:1 ratio. Multiple views per member is typical and efficient.

Practical Example: In an INE lab, configure two views on one member, test split DNS, and troubleshoot view conflicts.