Infoblox NIOS-DDI-Expert Infoblox Qualified NIOS DDI Expert - INE Exam Practice Test

Answer : B

Comprehensive and Detailed In-Depth

Grid Master (GM) failure recovery:

B: A Grid Master Candidate (GMC), pre-designated in Grid Manager (Grid > Members), can be promoted (Grid > Promote GMC) to replace a failed GM, assuming its role. Correct.

A: Grid Manager is the UI, not a device. Incorrect.

C: Not all members are GMCs---only designated ones qualify. Incorrect.

D: No ''standby GM'' role---GMC is the term. Incorrect.

Practical Example: In an INE lab, promote a GMC after GM failure, test sync, and troubleshoot promotion issues.

Answer : A, B, C, D

Comprehensive and Detailed In-Depth

In NIOS Grid Manager (Data Management > DNS > Add Zone), administrators can create various zone types to manage DNS resolution. All listed options are valid:

A (Authoritative Zone): A zone where the Infoblox appliance is the authoritative source for DNS records (e.g., example.com with A, MX records). Correct.

B (Forward Zone): A zone configured to forward queries to external DNS servers (e.g., forwarding 'internal.com' to a corporate DNS). Correct.

C (Primary Zone): Often synonymous with Authoritative Zone in Infoblox, it's a master zone hosting original DNS data (distinct from secondary zones). Correct.

D (Delegation): A zone delegated to another name server (e.g., 'sub.example.com' delegated to different NS records). Correct.

Clarification: In NIOS, 'Authoritative' and 'Primary' are sometimes used interchangeably, but both are options in the Add Zone wizard, alongside Forward and Delegation zones.

Practical Example: In an INE lab, you might add an Authoritative Zone for 'lab.com,' a Forward Zone for external lookups, and a Delegation for a subdomain, testing DNS troubleshooting across these types.

Answer : A

Comprehensive and Detailed In-Depth

Workflow Approval notifications:

A: The Grid Master (GM) sends emails via its configured SMTP settings (Grid > Grid Properties > Email), as it manages Grid-wide tasks. Correct.

B: GMC is a standby, not active unless promoted---doesn't send emails. Incorrect.

C: Only GM sends, not both---GMC is passive. Incorrect.

D: SuperAdmin is a role, not a process---no sending capability. Incorrect.

Practical Example: In an INE lab, configure SMTP on the GM, test approval emails, and troubleshoot delivery from GM logs.

Answer : A

Comprehensive and Detailed In-Depth

In an Infoblox High Availability (HA) pair, the active node maintains the live database and services (DNS, DHCP, etc.), while the passive node remains on standby, ready to take over if needed. Database synchronization between the active and passive nodes is handled directly by the active node using the bloxSync mechanism over a secure connection (typically SSL). The Grid Master oversees Grid-wide synchronization, but within an HA pair, the active node is responsible for keeping the passive node's database up-to-date. The Grid Master Candidate (GMC) and DNS Primary are unrelated to this specific HA pair sync process. This is a key troubleshooting point in the INE course.

Answer : B

Comprehensive and Detailed In-Depth

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.

Answer : D

Comprehensive and Detailed In-Depth

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 for operational efficiency.

Answer : D

Comprehensive and Detailed In-Depth

Obtaining new NIOS software releases follows a standardized process tied to Infoblox's support infrastructure:

Official Method: New releases (e.g., NIOS 8.6.x) are available for download from the Infoblox Support Portal (https://support.infoblox.com) under the 'Downloads' section. Admins log in with valid credentials, select the appliance model, and download the .upgrade file.

Options Analysis:

A: 'Grid > Software > Download' isn't a valid path in Grid Manager. The UI supports uploading and distributing releases (Grid > Upgrade), but not direct downloading. Incorrect.

B: Technical Support can assist with issues or provide files in rare cases (e.g., beta releases), but it's not the standard method---self-service via the portal is preferred. Incorrect.

C: Account Managers handle sales, not software distribution. 'Support Bundle' is also a misnomer---it's for diagnostics, not upgrades. Incorrect.

D: The support portal is the documented, primary source for NIOS releases, aligning with INE's focus on Grid upgrade procedures. Correct.

Steps: Download the file, upload it via Grid Manager (Grid > Upgrade > Upload), and initiate the upgrade process.

Practical Example: In an INE lab, you'd download NIOS 8.6.2 from the portal, upload it, and test a Grid-wide upgrade, troubleshooting any distribution failures.