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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q22-Q27):

NEW QUESTION # 22
You accidentally deleted several DNS entries from the Grid. How can you recover from this mistake with the least service disruption?

A. Force HA failover on the GM, if it is an HA pair
B. Restore the records from the recycle bin
C. Promote a GMC to be the new GM
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 # 23
How are Workflow Approval notifications delivered in NIOS?

A. Via push notifications
B. Via in-app notifications
C. Via SMS
D. Via email

Answer: D

Explanation:
Comprehensive and Detailed In-Depth Explanation:Workflow Approval in NIOS enforces change control with notifications:
* Mechanism:When a requester submits a change (e.g., new DNS record), approvers are notified via email, configured in Grid Properties (Grid > Grid Manager > Grid Properties > Email).
* Details:SMTP server settings (e.g., IP, port, credentials) must be defined for delivery. No other methods are natively supported.
* Options:
* A:SMS isn't supported-requires external integration. Incorrect.
* B:Push notifications aren't part of NIOS GUI or mobile app (none exists). Incorrect.
* C:Email is the documented, sole method. Correct.
* D:In-app notifications don't exist-Grid Manager relies on email. Incorrect.
* Practical Example:In an INE lab, you'd configure an SMTP server, request a zone change, and troubleshoot email delivery failures for approval, testing Grid management.References:Infoblox NIOS Administrator Guide - Workflow Approval Notifications; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 24
What types of restrictions can be applied to a super user admin account?

A. Network
B. Database object type
C. No restrictions can be applied to super-user accounts
D. Read only or read/write

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:Superuser accounts in NIOS have unrestricted access:
* Definition:Superusers (Administration > Administrators > Edit > Superuser) have full read/write permissions across all Grid objects and functions (DNS, DHCP, Grid settings).
* Restrictions:Unlike regular admins, superusers can't be limited by object type, network scope, or read- only status-their role overrides all constraints.
* Options:
* A/B/C:These apply to non-superuser accounts (e.g., limit to DNS zones or read-only). Incorrect for superusers.
* D:Matches NIOS design-superusers are unrestricted by definition. Correct.
* Practical Example:In an INE lab, a superuser overrides a restricted admin's permissions to fix a Grid issue, testing ultimate control scenarios.References:Infoblox NIOS Administrator Guide - Admin Permissions; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 25
Revert allows an administrator to swap the Infoblox software to the previously installed version of code, while retaining the current DNS, DHCP, and Grid configuration information.

A. True
B. False

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:The "Revert" feature in NIOS is a safety mechanism for software upgrades, allowing rollback to the prior version if issues arise. Here's how it works:
* Mechanism:NIOS retains the previous software version and configuration database after an upgrade.
The "Revert" option (Grid > Upgrade > Revert) swaps back to the old code, preserving the current DNS zones, DHCP leases, and Grid settings (e.g., member roles).
* Conditions:
* Revert is available only if the upgrade was successful and the prior version is still stored (not overwritten by multiple upgrades).
* Configuration changes made post-upgrade are kept, unlike a factory reset.
* Why True:This aligns with Infoblox's design to minimize downtime and data loss during version management, a key focus in INE's Grid troubleshooting labs.
* Counterpoint:If the database schema changes significantly between versions, some settings might not fully revert, but core DNS/DHCP/Grid data remains intact per documentation.
* Practical Example:After upgrading to NIOS 8.6.2 and encountering DNS issues, you'd revert to 8.6.1 in an INE lab, verifying that zone data persists for troubleshooting continuity.References:Infoblox NIOS Administrator Guide - Software Revert; INE Course Content: NIOS DDI Grid Troubleshooting.

NEW QUESTION # 26
When viewing NTP statistics in NIOS CLI, you notice an entry has the asterisk symbol () next to it. What does the asterisk symbol () signify?

A. It means this NTP server is unreachable
B. It means the Member is synchronized to this NTP server
C. It means this NTP server is offline
D. It means the NTP service is disabled for the Member

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:NTP (Network Time Protocol) synchronization is critical for Grid operations, and NIOS CLI provides status via show ntp:
* Output Format:Lists NTP servers with symbols:
* *: The server the member is currently synchronized to (stratum and offset shown).
* +: Candidate server (reachable but not primary).
* -: Unreachable or rejected server.
* Asterisk Meaning:Indicates the active sync source, ensuring time consistency across the Grid.
* Options:
* A:Unreachable servers get a "-" or no symbol, not "*". Incorrect.
* B:Matches NTP convention and NIOS behavior-synchronized server. Correct.
* C:Offline servers don't sync and lack "*". Incorrect.
* D:Disabled NTP would prevent stats display, not mark a server. Incorrect.
* Practical Example:In an INE lab, you'd run show ntp, see "*pool.ntp.org," and troubleshoot time drift if the asterisk shifts, testing Grid stability.References:Infoblox NIOS CLI Reference Guide - NTP Commands; INE Course Content: NIOS DDI Grid Troubleshooting.

NEW QUESTION # 27
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