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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q14-Q19):

NEW QUESTION # 14
A customer reports difficulty joining a standalone High Availability (HA) pair. How should the customer diagnose the issue? Choose 2 answers

A. Use error messages recorded in syslog and debug log on both nodes
B. Reset everything before trying to re-join
C. Use traffic capture on both nodes
D. Use traffic capture on the first node (the active node)

Answer: A,C

Explanation:
Comprehensive and Detailed In-Depth Explanation:Joining a standalone HA pair to a Grid involves network, authentication, and sync issues. Best diagnostics:
* A:Syslog (show log syslog) and debug logs (e.g., infoblox.log in support bundle) on both nodes reveal errors (e.g., "Join failed: invalid secret"). Essential for root cause. Correct.
* C:Traffic capture (tcpdump via CLI) on both nodes checks VRRP, bloxSync, and network issues (e.g., blocked ports). Comprehensive view of communication. Correct.
* B:Capturing only the active node misses passive node issues (e.g., firewall blocking sync). Incomplete.
Incorrect.
* D:Resetting erases logs and configs, hindering diagnosis-last resort, not initial step. Incorrect.
* Practical Example:In an INE lab, you'd check syslog for "sync failed," run tcpdump -i eth0 port 443 on both, and troubleshoot a blocked SSL port.References:Infoblox NIOS Administrator Guide - HA Troubleshooting; INE Course Content: NIOS DDI Grid Troubleshooting.

NEW QUESTION # 15
What is the purpose of the "Override" button in the context of settings inheritance?

A. To change the settings at a lower level, overriding the inherited values
B. To apply the same settings across all hierarchy levels simultaneously
C. To reset all settings to their default values
D. To prevent any changes to settings at lower hierarchy levels

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:Settings inheritance in NIOS allows higher-level configurations (e.g., Grid-wide) to propagate to lower levels (e.g., members):
* Override Button:Found in Grid Manager (e.g., Grid > Members > Edit), it lets admins modify a setting at a lower level (e.g., member-specific DHCP options), breaking inheritance from the parent (e.
g., Grid).
* Why C:Overriding replaces the inherited value with a custom one for that object, tailoring behavior without affecting others.
* Options:
* A:Resetting to defaults is a separate action (e.g., "Revert to Default"). Incorrect.
* B:Preventing changes contradicts override's purpose-it enables change. Incorrect.
* C:Matches the function-alter lower-level settings. Correct.
* D:Applying uniformly isn't overriding-it's setting at a higher level. Incorrect.
* Practical Example:In an INE lab, you'd override a Grid-wide DNS TTL (3600s) to 300s on one member, test resolution, and troubleshoot inheritance conflicts.References:Infoblox NIOS Administrator Guide - Inheritance; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 16
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. Restore the records from the recycle bin
C. Force HA failover on the GM, if it is an HA pair
D. Restore the database from the last backup

Answer: B

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 # 17
A customer has the following Grid: Grid Master HA pair, three HA Grid Members, one single Grid Member.
The customer has defined custom Upgrade Groups based on the physical location of the appliances. After the administrator clicks Upgrade, which node will go through the upgrade process first?

A. Grid Master active node
B. All of the Member passive nodes
C. Depends on the configuration of Upgrade Groups
D. Grid Master passive node

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:In NIOS, the upgrade process for a Grid can be customized usingUpgrade Groups, which allow administrators to define the order and timing of upgrades for Grid members based on criteria like location or role. By default, the Grid Master (active node) upgrades last to ensure continuity, and passive nodes in HA pairs often upgrade before active nodes. However, when custom Upgrade Groups are defined (as in this scenario, based on physical location), the upgrade sequence follows the administrator's configuration rather than a fixed rule. Thus, the first node to upgrade depends entirely on how the Upgrade Groups are prioritized in the upgrade schedule. This flexibility is a focus of the INE course's Grid deployment section.References:Infoblox NIOS Administrator Guide - Software Upgrades; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 18
Which stage of a NIOS upgrade is generally expected to take the shortest time?

A. Test
B. Distribute
C. Upload
D. Upgrade

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:NIOS upgrade stages (Grid > Upgrade):
* A (Upload):Uploading the .upgrade file (e.g., 50-200 MB) to the GM is quick-seconds to minutes, depending on network speed. Shortest. Correct.
* B (Test):Validates file integrity/compatibility-fast but longer than upload (e.g., 1-2 minutes).
Incorrect.
* C (Distribute):Sending the file to all members takes longer, proportional to Grid size/network (e.g., 5-
15 minutes). Incorrect.
* D (Upgrade):Rebooting and applying the update per member is the longest (e.g., 10-30 minutes total).
Incorrect.
* Practical Example:In an INE lab, upload takes 30s, while distribution and upgrade take 10+ minutes, testing Grid deployment timing.References:Infoblox NIOS Administrator Guide - Upgrade Process; INE Course Content: NIOS DDI Grid Deployment.

NEW QUESTION # 19
......

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Infoblox Qualified NIOS DDI Expert - INE exam pdf guide & NIOS-DDI-Expert prep sure exam

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