FREE PDF LATEST INFOBLOX - NIOS-DDI-EXPERT RELIABLE EXAM SYLLABUS

Free PDF Latest Infoblox - NIOS-DDI-Expert Reliable Exam Syllabus

Free PDF Latest Infoblox - NIOS-DDI-Expert Reliable Exam Syllabus

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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q31-Q36):

NEW QUESTION # 31
What command clears the NIOS database but preserves system logs and other licensed features such as reporting?

  • A. reset all licenses
  • B. reset all
  • C. reset database
  • D. reset config

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:Clearing the NIOS database requires a precise CLI command:
* B (reset database):Wipes DNS zones, DHCP leases, and Grid membership, but retains:
* System logs (e.g., syslog, infoblox.log).
* Licenses (e.g., reporting, DNSSEC).
* Network settings (IP, hostname). Correct.
* A:"reset all" isn't valid (see Q28). Incorrect.
* C:"reset config" isn't a command-closest is set factory, which wipes everything. Incorrect.
* D:reset all licenses clears licenses only, not the database. Incorrect.
* Practical Example:In an INE lab, you'd run reset database, verify logs persist via show log, and reconfigure, testing Grid recovery.References:Infoblox NIOS CLI Reference Guide - Reset Commands; INE Course Content: NIOS DDI Grid Troubleshooting.


NEW QUESTION # 32
The Grid is comprised of all single members. Which member will upgrade first?

  • A. The Reporting server upgrades first
  • B. You can choose which member upgrades first
  • C. The Grid Master upgrades first
  • D. The Grid Master Candidate upgrades first

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation: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.References:Infoblox NIOS Administrator Guide - Upgrade Scheduling; INE Course Content:
NIOS DDI Grid Deployment.


NEW QUESTION # 33
An administrator redirects audit log output to syslog on an Infoblox appliance. This audit log output will be logged on any defined remote syslog servers.

  • A. False
  • B. True

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:Audit log redirection in NIOS:
* Setup:In Grid Manager (Administration > Logs > Syslog), enable "Redirect audit log to syslog." Audit events (e.g., config changes) merge into syslog.
* Behavior:If remote syslog servers are defined (Grid > Grid Properties > Syslog Servers), all syslog data-including audit logs-is sent there.
* Why True:Redirection ensures audit logs reach all configured remote servers alongside local syslog.
* Practical Example:In an INE lab, redirect audit logs, change a DNS record, verify syslog on a remote server, and troubleshoot logging.References:Infoblox NIOS Administrator Guide - Logging Configuration; INE Course Content: NIOS DDI Grid Troubleshooting.


NEW QUESTION # 34
You have DHCPv4 failover, and one of the peers lost power, triggering the COMMUNICATIONS- INTERRUPTED state. Power will be restored in 1 hour. In the meantime, there are several new devices coming online. What must you do to ensure DHCP service runs smoothly for everyone?

  • A. Immediately increase lease time on affected networks to 4 hours or more
  • B. Change DHCP relay or router configuration to only relay to the remaining peer or member
  • C. Nothing. All existing clients can renew with the remaining peer. The remaining peer can likely service a few new clients even with the reduced new client capacity
  • D. Contact Infoblox Support and be ready to place the remaining peer or member into PARTNER-DOWN

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:DHCP Failover in NIOS ensures redundancy between two peers (primary and secondary). When one peer loses power, the state shifts toCOMMUNICATIONS- INTERRUPTED, meaning the remaining peer continues serving DHCP but with limited capacity for new leases. Let's analyze:
* Failover Mechanics:In NORMAL state, peers split the lease pool (e.g., 50/50 or custom split). In COMMUNICATIONS-INTERRUPTED, the surviving peer:
* Renews leases for existing clients (using its synced database).
* Assigns new leases from its portion of the pool, with reduced capacity (e.g., MCLT-Maximum Client Lead Time-limits new lease duration).
* Scenario:Power is out for 1 hour, and new devices are joining. The remaining peer can handle renewals and has some new lease capacity (depending on pool size and MCLT, typically 1 hour by default).
* Options:
* A:Contacting support and forcing PARTNER-DOWN gives the surviving peer full pool access, but it's unnecessary for a 1-hour outage with "a few" new clients. Overkill.
* B:Increasing lease time (e.g., to 4 hours) prevents lease expiration but doesn't address new client capacity and requires manual reversion. Unneeded complexity.
* C:Reconfiguring relays to point only to the surviving peer is redundant-it's already receiving requests-and risks misconfiguration. Incorrect.
* D:Doing nothing leverages the failover design: existing clients renew seamlessly, and the remaining peer services new clients within its capacity. Correct for this short-term, low-impact scenario.
* Practical Example:In an INE lab, you'd monitor the surviving peer's lease usage (via Grid Manager > DHCP > Leases) and confirm it handles the load, a key troubleshooting skill.References:Infoblox NIOS Administrator Guide - DHCP Failover; INE Course Content: NIOS DDI DHCP Troubleshooting.


NEW QUESTION # 35
You accidentally deleted several DNS entries from the Grid. How can you recover from this mistake with the least service disruption?

  • A. Restore the records from the recycle bin
  • B. Promote a GMC to be the new GM
  • C. Force HA failover on the GM, if it is an HA pair
  • D. Restore the database from the last backup

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:Accidentally deleting DNS entries (e.g., A records) in NIOS requires a recovery method that minimizes downtime and complexity. Here's the analysis:
* Recycle Bin Feature:NIOS includes a Recycle Bin (Data Management > DNS > Recycle Bin) that temporarily stores deleted objects (e.g., zones, records) unless permanently purged or the bin is disabled. Restoring from here is instantaneous and doesn't interrupt services.
* Options:
* A:Restoring from a backup (Grid > Grid Manager > Backup > Restore) replaces the entire database, requiring service restarts and potentially losing post-backup changes. High disruption.
Incorrect.
* B:Promoting a Grid Master Candidate (GMC) to Grid Master (GM) shifts control but doesn't recover deleted records-it's for GM failure, not data loss. Irrelevant. Incorrect.
* C:Forcing HA failover on the GM switches active/passive nodes but doesn't restore data, as both share the same database. No effect. Incorrect.
* D:Restoring from the Recycle Bin (select records > Restore) reverts the deletion with no service impact, assuming the bin is enabled (default in NIOS). Correct.
* Practical Example:In an INE lab, you'd delete an A record, navigate to the Recycle Bin, restore it, and verify DNS resolution-all without downtime, testing troubleshooting skills.
* Caveat:If the Recycle Bin is disabled or entries are purged, backup restoration (A) becomes necessary, but the question implies least disruption, favoring D.References:Infoblox NIOS Administrator Guide - Recycle Bin; INE Course Content: NIOS DDI DNS Troubleshooting.


NEW QUESTION # 36
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