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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q42-Q47):

NEW QUESTION # 42
The Infoblox appliance has an LCD panel. To join a node to a Grid, the administrator should use the LCD panel at the front of the Infoblox appliance.

A. True
B. False

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:Infoblox physical appliances (e.g., IB-1400 series) feature an LCD panel for basic configuration, but its role in Grid joining is limited:
* LCD Capabilities:The panel allows setting IP addresses, hostnames, and basic network parameters (e.
g., via arrow keys and menu options). It's useful for initial setup or recovery.
* Grid Joining Process:Joining a node to a Grid requires:
* Configuring the node's IP and Grid Master IP.
* Authenticating with Grid credentials (e.g., shared secret).
* Initiating the join via Grid Manager (Grid > Members > Add) or CLI (set membership).
* Why False:The LCD can set preliminary network settings, but full Grid joining-specifying the Grid Master, VPN details, and completing sync-requires CLI or GUI access. The panel lacks the interface for these steps.
* Practical Example:In an INE lab, you'd use the LCD to set an IP on a new node, then SSH to run set membership and join the Grid, troubleshooting connectivity via logs.References:Infoblox NIOS Administrator Guide - LCD Panel; INE Course Content: NIOS DDI Grid Deployment.

NEW QUESTION # 43
In what scenario would you tick the "Allow Multiple Values" checkbox when creating an Extensible Attribute?

A. When the organization requires the EA to have only a single value across all objects
B. When the EA is used for email addresses
C. When the EA represents a numeric value with a specific range
D. When an object should be able to store multiple values for this EA

Answer: D

Explanation:
Comprehensive and Detailed In-Depth Explanation:Extensible Attributes (EAs) in NIOS are custom metadata fields that administrators can define to tag objects like networks, hosts, or leases with additional information for reporting, filtering, or automation. By default, an EA holds a single value (e.g., "Location:
New York"), but ticking the "Allow Multiple Values" checkbox enables the EA to store a list of values for a single object (e.g., "Contacts: [Alice, Bob, Charlie]").
* Scenario:Imagine a network object representing a data center with multiple administrators. Setting
"Admin Contacts" as an EA with "Allow Multiple Values" lets you assign multiple names to that network, which is useful for tracking responsibilities.
* Option Analysis:
* A:Numeric ranges (e.g., "1-100") are handled by the EA's type (Integer) and validation rules, not multiple values. Incorrect.
* B:Requiring a single value contradicts the purpose of "Allow Multiple Values," which enables flexibility. Incorrect.
* C:Email addresses could use multiple values (e.g., multiple contacts), but this isn't the defining scenario-it's too specific. Incorrect.
* D:This is the general, correct case: when an object needs multiple entries for the same EA, like multiple tags or contacts.
* Practical Example:In a Grid troubleshooting scenario (INE focus), you might use an EA like "Backup Servers" with multiple values to list all failover servers for a network, aiding in diagnostics.The INE course emphasizes practical Grid management, including EA configuration foroperational efficiency.
References:Infoblox NIOS Administrator Guide - Extensible Attributes; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 44
You are asked to configure DHCPv4 failover on the Grid. Which of the following do you need for it to function correctly? (Select all that apply.)

A. TCP port 647 is open between DHCP members
B. DHCP members are directly connected via crossover network cables
C. DHCP relays are configured to relay to DHCP members simultaneously
D. DHCP members are located in the same subnet

Answer: A,C

Explanation:
Comprehensive and Detailed In-Depth Explanation:DHCPv4 Failover requirements:
* C:TCP 647 is the failover sync port-must be open for lease coordination. Correct.
* D:Relays must send requests to both peers (e.g., via IP helper addresses) for load balancing
/redundancy. Correct.
* A:Crossover cables aren't required-standard network connectivity suffices. Incorrect.
* B:Same subnet isn't mandatory-peers can be remote if routable. Incorrect.
* Practical Example:In an INE lab, ensure port 647 is open, configure relays, test failover, and troubleshoot sync issues.References:Infoblox NIOS Administrator Guide - DHCP Failover Setup; INE Course Content: NIOS DDI DHCP Troubleshooting.

NEW QUESTION # 45
After making a configuration change on the NIOS Grid, you are prompted to restart services. What option provides the least service disruption?

A. Restart if needed on HA members only
B. Force restart on all members simultaneously
C. Restart if needed on all members sequentially
D. Force restart on GM only

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:Restarting services post-change (e.g., DNS zone update) requires minimizing downtime:
* B:"Restart if needed" checks if a restart is required per member, and "sequentially" staggers restarts (e.
g., passive HA nodes first), ensuring continuous service. Least disruptive. Correct.
* A:Simultaneous force restart stops all services at once-maximum disruption. Incorrect.
* C:GM-only restart ignores other members needing updates, incomplete. Incorrect.
* D:HA members only misses single nodes or GM, partial solution. Incorrect.
* Practical Example:In an INE lab, you'd select sequential restart after a DHCP range change, monitor client connectivity, and troubleshoot minimal impact.References:Infoblox NIOS Administrator Guide
- Service Restarts; INE Course Content: NIOS DDI Grid Troubleshooting.

NEW QUESTION # 46
By default, how do peers in an Infoblox DHCP Failover association operate in NORMAL mode?

A. Whichever peer receives the request first will answer the request
B. The primary answers all lease requests
C. The primary peer answers roughly half of the lease requests and the secondary answers the other half
D. The primary answers all lease requests up to the utilization threshold, then the secondary answers requests

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:DHCP Failover in NIOS ensures redundancy and load balancing between primary and secondary peers in NORMAL mode:
* Default Behavior:The lease pool is split (typically 50/50 unless customized via "split" settings), and each peer manages its portion. Clients send DHCPDISCOVER broadcasts, and relays (or direct requests) distribute them to both peers. The peers coordinate via TCP 647, ensuring:
* Primary answers from its half.
* Secondary answers from its half.
* Load is roughly balanced (not precisely 50/50 due to relay behavior).
* Options:
* A:Matches the default split-pool design, where peers share the load. Correct.
* B:"First come, first serve" isn't how failover works-peers don't race; they use pool allocation.
Incorrect.
* C:No utilization threshold triggers a switch-both peers serve concurrently from their pools.
Incorrect.
* D:Primary-only answering defeats failover's redundancy and balancing. Incorrect.
* Practical Example:In an INE lab, you'd configure a 50/50 split, simulate client requests, and troubleshoot lease distribution via DHCP logs, verifying NORMAL mode behavior.References:
Infoblox NIOS Administrator Guide - DHCP Failover; INE Course Content: NIOS DDI DHCP Troubleshooting.

NEW QUESTION # 47
......

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