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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q73-Q78):

NEW QUESTION # 73
What can an administrator do with an Option Filter in NIOS?

A. Match only on device types
B. Match on any DHCP options provided by the server
C. Match only vendor-specific options such as Option 60
D. Match on any DHCP options provided by the client

Answer: D

Explanation:
Comprehensive and Detailed In-Depth Explanation:In NIOS, DHCP Option Filters allow administrators to define rules for matching DHCP client requests based on the options they send in their DHCP packets. These filters are highly flexible and can matchany DHCP option provided by the client, such as Option 55 (Parameter Request List), Option 60 (Vendor Class Identifier), or custom options. This enables precise DHCP policy enforcement, like assigning specific IP ranges or options to certain devices. Option B is incorrect because filters apply to client requests, not server responses. Option C is too narrow-while Option 60 is common, filters aren't limited to vendor-specific options. Option D is vague and incorrect; device type matching is a subset of option matching. The INE course covers DHCP troubleshooting, including filter configuration.References:Infoblox NIOS Administrator Guide - DHCP Option Filters; INE Course Content:
NIOS DDI DHCP Troubleshooting.

NEW QUESTION # 74
You accidentally deleted several DNS entries from the Grid. How can you recover from this mistake with the least service disruption?

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

Answer: D

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 # 75
How many IP addresses are required to configure a High Availability (HA) pair?

A. 0
B. 1
C. 2
D. 3

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:An HA pair in NIOS requires:
* 1. Virtual IP (VIP):Shared address for services (e.g., 192.168.1.100).
* 2. Active Node IP:Physical address (e.g., 192.168.1.101).
* 3. Passive Node IP:Physical address (e.g., 192.168.1.102).
* Total:3 IPs.
* Options:
* A:2 IPs insufficient-misses individual node IPs. Incorrect.
* B:3 IPs match HA design (VIP + 2 nodes). Correct.
* C/D:Extra IPs (e.g., MGMT) are optional, not required. Incorrect.
* Practical Example:In an INE lab, configure VIP 10.0.0.1, active 10.0.0.2, passive 10.0.0.3, test failover, and troubleshoot VRRP.References:Infoblox NIOS Administrator Guide - HA Configuration; INE Course Content: NIOS DDI Grid Deployment.

NEW QUESTION # 76
How does an administrator obtain new NIOS releases?

A. Download fromhttps://support.infoblox.com
B. In Grid UI, go to Grid > Software > Download
C. Contact the Infoblox Account Manager for a Support Bundle
D. Contact Infoblox Technical Support for a Software Bundle

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:Obtaining new NIOS software releases follows a standardized process tied to Infoblox's support infrastructure:
* Official Method:New releases (e.g., NIOS 8.6.x) are available for download from theInfoblox Support Portal(https://support.infoblox.com) under the "Downloads" section. Admins log in with valid credentials, select the appliance model, and download the .upgrade file.
* Options Analysis:
* A:"Grid > Software > Download" isn't a valid path in Grid Manager. The UI supports uploading and distributing releases (Grid > Upgrade), but not direct downloading. Incorrect.
* B:Technical Support can assist with issues or provide files in rare cases (e.g., beta releases), but it's not the standard method-self-service via the portal is preferred. Incorrect.
* C:Account Managers handle sales, not software distribution. "Support Bundle" is also a misnomer-it's for diagnostics, not upgrades. Incorrect.
* D:The support portal is the documented, primary source for NIOS releases, aligning with INE's focus on Grid upgrade procedures. Correct.
* Steps:Download the file, upload it via Grid Manager (Grid > Upgrade > Upload), and initiate the upgrade process.
* Practical Example:In an INE lab, you'd download NIOS 8.6.2 from the portal, upload it, and test a Grid-wide upgrade, troubleshooting any distribution failures.References:Infoblox NIOS Administrator Guide - Obtaining Software Releases; INE Course Content: NIOS DDI Grid Deployment.

NEW QUESTION # 77
A firewall change has interrupted the DHCP Failover communication between two DHCP Failover peers.
Both peers are still online and can communicate to clients, but the state is now COMMUNICATIONSINTERRUPTED. What should the administrator do?

A. Place the Primary peer into PARTNER-DOWN
B. Nothing
C. Change split value
D. Place the secondary peer into PARTNER-DOWN

Answer: D

Explanation:
Comprehensive and Detailed In-Depth Explanation:DHCP Failover peers sync leases via TCP 647. A firewall blocking this shifts the state to COMMUNICATIONS-INTERRUPTED:
* State Impact:
* Both peers serve existing clients and limited new leases (via MCLT).
* No sync occurs, risking lease conflicts if prolonged.
* Best Action:Manually set one peer toPARTNER-DOWN(Grid > DHCP > Failover > Edit), giving the other full pool control to avoid conflicts.
* Why Secondary:Conventionally, the secondary is set to PARTNER-DOWN, letting the primary take over as the authoritative peer (per Infoblox best practices).
* Options:
* A:Doing nothing risks conflicts if new leases exceed MCLT capacity. Incorrect long-term.
* B:Primary to PARTNER-DOWN cedes control to secondary, less standard. Incorrect.
* C:Secondary to PARTNER-DOWN empowers primary, aligning with failover design. Correct.
* D:Changing split value doesn't address sync loss. Incorrect.
* Practical Example:In an INE lab, you'd simulate this, set secondary to PARTNER-DOWN, and troubleshoot lease consistency post-firewall fix.References:Infoblox NIOS Administrator Guide - DHCP Failover States; INE Course Content: NIOS DDI DHCP Troubleshooting.

NEW QUESTION # 78
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