NIOS-DDI-Expert Infoblox Qualified NIOS DDI Expert - INE Free Practice Exam Questions (2025 Updated)

Comprehensive and Detailed In-Depth Explanation:Clearing the NIOS database requires a precise CLI command:

B (reset database):Wipes DNS zones, DHCP leases, and Grid membership, but retains:

System logs (e.g., syslog, infoblox.log).

Licenses (e.g., reporting, DNSSEC).

Network settings (IP, hostname). Correct.

A:“reset all” isn’t valid (see Q28). Incorrect.

C:“reset config” isn’t a command—closest is set factory, which wipes everything. Incorrect.

D:reset all licenses clears licenses only, not the database. Incorrect.

Practical Example:In an INE lab, you’d run reset database, verify logs persist via show log, and reconfigure, testing Grid recovery.References:Infoblox NIOS CLI Reference Guide – Reset Commands; INE Course Content: NIOS DDI Grid Troubleshooting.

Comprehensive and Detailed In-Depth Explanation:When NIOS uses remote authentication (e.g., RADIUS, LDAP, or Active Directory), user authentication is handled by the external server, butpermissionsare defined within the NIOS Grid. For a group like "Infoblox-Admins," the external server verifies user credentials and group membership, but the Grid Manager assigns permissions (e.g., read/write access to DNS zones) to the group itself. This centralizes access control within NIOS, ensuring consistency across the Grid. Options A and B are incorrect because the external server manages authentication, not NIOS-specific permissions. Option D is wrong as permissions are group-based, not individually assigned on the Grid. The INE course covers Grid administration, including authentication setup.References:Infoblox NIOS Administrator Guide – Authentication; INE Course Objective: NIOS DDI Grid Deployment.

Comprehensive and Detailed In-Depth Explanation:In an HA pair, the passive node stays synchronized with the active node to ensure seamless failover. This synchronization usesbloxSync, a proprietary Infoblox protocol that securely transfers database updates (e.g., DNS records, DHCP leases) between the HA pair members over an SSL-encrypted connection. Theactive node, being the operational member, directly provides these updates to the passive node. The Grid Master handles Grid-wide sync, but within an HA pair, the active node is the source. Options A and B misrepresent the mechanism (it’s not a traditional VPN), and Option D incorrectly attributes the sync to the Grid Master. This is a critical HA troubleshooting topic in the INE course.References:Infoblox NIOS Documentation – HA Pair Configuration; INE Course Content: NIOS DDI Grid Troubleshooting.