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Title: 100% Pass Infoblox - High Hit-Rate NIOS-DDI-Expert - Infoblox Qualified NIOS DDI
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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q50-Q55):NEW QUESTION # 50
What does the Stealth option do on a name server for a DNS Zone?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation: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.References:Infoblox NIOS Administrator Guide - DNS Name Servers; INE Course Content:
NIOS DDI DNS Troubleshooting.

NEW QUESTION # 51
Which of the following statements about restarting Grid services are true? (Select all that apply.)
Answer: B,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:Restarting services (e.g., DNS, DHCP) on NIOS Grid members is a common administrative task, often required after configuration changes. Let's break down each option with detailed reasoning:
* A:"oll members to see which services will be restarted" suggests proactively querying members for restart eligibility. NIOS doesn't offer a specific polling feature for this-administrators check service status (e.g., via Grid Manager > Members > Services) or logs, but there's no pre-restart polling tool.
Incorrect.
* B:In Grid Manager (Grid > Grid Manager > Members), you can select a member and click "Restart Services" with a "Force Restart" option, overriding any checks for necessity. This is useful in troubleshooting (e.g., clearing a hung DNS service). Correct.
* C:NIOS allows scheduling service restarts via the "Schedule Restart" option in Grid Manager, letting you specify a time to minimize disruption (e.g., off-hours). This aligns with Grid management best practices taught in INE. Correct.
* D:There's no default daily restart policy in NIOS. Restarts occur only when triggered by an admin or system event (e.g., upgrade). This would disrupt service unnecessarily if true. Incorrect.
* Practical Exampleuring an INE lab, you might force a restart on a member to resolve a DHCP failover issue or schedule a restart after updating a DNS zone to ensure propagation, reflecting real- world Grid troubleshooting.References:Infoblox NIOS Administrator Guide - Managing Grid Services; INE Course Content: NIOS DDI Grid Troubleshooting.

NEW QUESTION # 52
When defining a custom DHCP option, how does the administrator select the option name?
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:Custom DHCP options in NIOS allow tailoring DHCP responses for specific devices or applications:
* Configuration:In Grid Manager (Data Management > DHCP > Option Spaces > Add), admins define custom options with:
* Option Number:Must match the DHCP standard or vendor spec (1-254).
* Name:A user-defined label for clarity (e.g., "TFTP-Server").
* Data Typee.g., string, IP).
* Naming Freedom:The "name" is an internal NIOS identifier, not tied to DHCP packets or vendor standards-it's for admin convenience. The option number and value align with vendor needs (e.g., Option 66 for TFTP), but the name can be arbitrary (e.g., "MyTFTP" vs. "VendorTFTP").
* Options:
* A/B:Vendor definitions apply to option numbers/values, not names. Case sensitivity is irrelevant.
Incorrect.
* C:No requirement to include the vendor name-it's optional. Incorrect.
* D:Admins can choose any descriptive name, making management intuitive. Correct.
* Practical Example:In an INE lab, you'd define a custom option "VoIPConfig" (Option 66, string), assign it to a range, and troubleshoot client reception, testing DHCP flexibility.References:Infoblox NIOS Administrator Guide - Custom DHCP Options; INE Course Content: NIOS DDI DHCP Troubleshooting.

NEW QUESTION # 53
What types of permissions can be assigned to a Group or Role in NIOS? (Select all that apply.)
Answer: B,C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:NIOS uses a granular permission model for admin groups/roles (Administration > Administrators). Here's what applies:
* A (Global Permissions):Broad privileges across all objects (e.g., "All DNS Zones" read/write).
Applies to groups/roles for universal access. Correct.
* B (Object Permissions):Specific to individual objects (e.g., read-only on "zone1.example.com").
Assignable to groups/roles for fine control. Correct.
* C (Grid Permissions):Control Grid-wide settings (e.g., backup, upgrade permissions). Assignable to groups/roles, distinct from member-specific rights. Correct.
* D (Member Permissions)ermissions are tied to Grid members (e.g., restart services on "Member1"), but NIOS documentation classifies these under object or Grid permissions, not a separate "Member" category. Incorrect in this context.
* Setup:In Grid Manager, you assign these via group/role properties, selecting scopes (global, object- specific, Grid-level).
* Practical Example:In an INE lab, you'd assign a group global DNS write access and Grid backup rights, testing restricted troubleshooting scenarios.References:Infoblox NIOS Administrator Guide - Permissions; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 54
Which action can an administrator safely perform during an upgrade?
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanationuring a NIOS software upgrade (Grid > Upgrade), the Grid enters a sensitive state where certain actions risk instability. Let's evaluate:
* Upgrade Phases:Upload, Distribute, Test, Upgrade. Members reboot and sync, requiring database consistency.
* Options:
* A:Updating DNS views modifies the database, which could conflict with the upgrade's database sync or cause service interruptions. Unsafe.
* B:Changing DHCP properties (e.g., ranges) alters live configurations, risking lease sync issues during member reboots. Unsafe.
* C:Setting the time zone (Grid > Members > Edit > Basic) is a non-service-affecting change, stored locally and applied post-reboot. Safe during upgrades, as it doesn't impact DNS/DHCP
/Grid data. Correct.
* D:Incorrect, as C is a viable safe action.
* Practical Example:In an INE lab, you'd adjust a member's time zone during an upgrade to align logs, troubleshooting without disrupting the process.References:Infoblox NIOS Administrator Guide - Upgrade Best Practices; INE Course Content: NIOS DDI Grid Deployment.

NEW QUESTION # 55
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