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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q26-Q31):

NEW QUESTION # 26
How many IP addresses are required to configure a High Availability (HA) pair?

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

Answer: C

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 # 27
Which of the following statements about restarting Grid services are true? (Select all that apply.)

A. You can poll members to see which services will be restarted
B. You can schedule service restarts
C. You can force service restart on a member
D. By default, the Grid restarts services every day

Answer: B,C

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:"Poll 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 Example:During 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 # 28
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 the Member is synchronized to this NTP server
B. It means the NTP service is disabled for the Member
C. It means this NTP server is offline
D. It means this NTP server is unreachable

Answer: A

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 # 29
When would you set a "Default Value" for an EA in NIOS?

A. When you want to assign a predefined value for the EA
B. When you want to specify the allowable range for the EA
C. When the EA represents a numeric value with a specific range
D. When the EA is intended to be unique for each object and not set to any default

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:Extensible Attributes (EAs) enhance NIOS object metadata, and the "Default Value" option sets a predefined value automatically applied when the EA is assigned to an object (unless overridden).
* Purpose:It simplifies configuration by pre-populating common values, reducing manual entry.
* Scenario:For an EA like "Department," setting a default value of "IT" ensures new networks inherit this unless specified otherwise (e.g., "HR").
* Options:
* A:Allowable ranges (e.g., 1-100) are set via EA type (Integer) and constraints, not default values.
Incorrect.
* B:Numeric values with ranges relate to validation, not defaults. Incorrect.
* C:Assigning a predefined value (e.g., "Enabled" for "Status") is the exact use case for defaults.
Correct.
* D:Unique values per object contradict defaults, which apply uniformly unless changed. Incorrect.
* Practical Example:In an INE Grid deployment lab, you'd set a default EA "Region: US" for new members, streamlining setup and troubleshooting consistency.References:Infoblox NIOS Administrator Guide - Extensible Attributes; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 30
What is the correct order of a NIOS upgrade?

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

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:A NIOS software upgrade follows a structured process in Grid Manager (Grid > Upgrade):
* Correct Order:
* Test Upload:Upload the .upgrade file (e.g., NIOS 8.6.2) and test it for integrity/compatibility (checks file checksum, version support).
* Distribute:Push the file to all Grid members, ensuring each has the update locally.
* Upgrade:Execute the upgrade, rebooting members per the schedule (e.g., passive nodes first).
* Why A:"Test Upload" combines the upload and initial validation steps, followed by distribution and execution. NIOS documentation uses this sequence for clarity.
* Options:
* B:Splits Test and Upload, but Test occurs with Upload in practice. Incorrect flow.
* C:Distribute before Upload is impossible-members need the file first. Incorrect.
* D:Test after Upgrade defeats the purpose of pre-validation. Incorrect.
* Practical Example:In an INE lab, you'd upload/test NIOS 8.6.2, distribute to an HA pair, upgrade the passive node, and troubleshoot sync issues, mastering Grid deployment.References:Infoblox NIOS Administrator Guide - Upgrade Process; INE Course Content: NIOS DDI Grid Deployment.

NEW QUESTION # 31
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