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

Answer : B, C, D

Comprehensive and Detailed In-Depth

Copying DNS records in NIOS (Data Management > DNS > Zones):

Process: Select source zone, choose records, copy to target zone.

B: Copy all of one type (e.g., A records) via filter. Correct.

C: Select multiple types (e.g., A and PTR) using multi-select. Correct.

D: Individually pick records (e.g., ''host1 A'') via checkboxes. Correct.

A: ''All records'' isn't an option---copying requires specificity (type or selection). Incorrect.

Practical Example: In an INE lab, copy A and PTR records from ''lab.com'' to ''test.com,'' test resolution, and troubleshoot mismatches.

Answer : A, B

Comprehensive and Detailed In-Depth

Permissions in NIOS (Administration > Administrators):

A (Admin Accounts): Individual accounts can have specific permissions (e.g., read-only DNS). Correct.

B (Groups): Admin groups get collective permissions (e.g., ''DNS_Admins'' write access). Correct.

C: ''Roles'' isn't a distinct NIOS entity---permissions tie to groups/accounts. Incorrect.

D: Superusers have unrestricted access, not assigned permissions---they override limits. Incorrect.

Practical Example: In an INE lab, assign DNS write to a group and read-only to an account, test access, and troubleshoot restrictions.

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 : C

Comprehensive and Detailed In-Depth

DHCP lease states in NIOS:

Scenario: Client gets IP (e.g., 192.168.1.10, 1-hour lease), doesn't renew, and timer expires.

C (Expired): Lease times out, marked ''Expired'' in NIOS (Data Management > DHCP > Leases), available for reassignment. Correct.

A: Active is for current, unexpired leases. Incorrect.

B: Released requires client action (DHCPRELEASE). Incorrect.

D: Abandoned is for declined or conflicting leases, not timeouts. Incorrect.

Practical Example: In an INE lab, set a 5-minute lease, wait for expiry, check ''Expired'' status, and troubleshoot lease reuse.

Answer : B

Comprehensive and Detailed In-Depth

In NORMAL state:

Lease Storage: Both primary and secondary peers store leases via sync (TCP 647). Each manages its pool share (e.g., 50/50), but all leases are replicated for redundancy.

Why False: ''Only primary'' contradicts failover's design---both peers maintain a full lease database for failover readiness.

Practical Example: In an INE lab, check leases on both peers (Data Management > DHCP > Leases), simulate primary failure, and troubleshoot secondary takeover.

Answer : D

Comprehensive and Detailed In-Depth

Upgrade Groups in NIOS allow administrators to control the sequence and timing of software upgrades across Grid members, minimizing disruption. Here's the detailed reasoning:

Upgrade Groups Purpose: They define which members upgrade together in a single phase, based on operational needs (e.g., location, role, or downtime tolerance), not inherent traits like type or services.

Options Analysis:

A: Hardware vs. virtual NIOS (vNIOS) distinction isn't mandatory---different types can upgrade together if operationally feasible. Incorrect.

B: Service roles (DNS, DHCP) don't dictate grouping; a DNS-only member and a DHCP-only member could upgrade simultaneously if desired. Incorrect.

C: Pre-upgrade software versions don't force grouping---NIOS manages version compatibility during the upgrade process. Incorrect.

D: The defining trait of an Upgrade Group is that its members upgrade at the same time, as set by the admin in the upgrade schedule (Grid > Upgrade). Correct.

Process: In Grid Manager, you create groups (e.g., 'Group 1: East Coast Members') and assign members to upgrade concurrently, followed by 'Group 2,' etc.

Practical Example: In an INE lab, you might group two HA pair passive nodes in 'Group 1' to upgrade at 1 AM, ensuring the active nodes (Group 2) upgrade later, testing Grid deployment resilience.

Answer : B

Comprehensive and Detailed In-Depth

Connecting to an Infoblox appliance's serial port for CLI access requires specific hardware compatibility, not just any serial cable. Here's why:

Serial Port Specs: Infoblox appliances use a standard DB9 serial port with a default baud rate of 9600 bps, 8 data bits, no parity, 1 stop bit (8N1). The cable must match this configuration and the appliance's pinout (typically RS-232 standard).

Cable Types:

A straight-through serial cable won't work---it's for connecting dissimilar devices (e.g., DTE to DCE).

A null modem cable (with crossed transmit/receive pins) is required to connect a computer (DTE) to the appliance (DTE), ensuring proper signal flow.

Practical Issue: Using an incompatible cable (e.g., lacking null modem crossover or incorrect connectors like RJ45) results in no communication, a common troubleshooting pitfall.

INE Context: The course's troubleshooting labs emphasize correct serial access for diagnosing network-down scenarios, highlighting this specificity.

Why False: Not all serial cables are null modem cables, and connector compatibility (e.g., DB9 vs. USB adapters) matters. Thus, 'any serial cable' is incorrect.

Example: In an INE lab, you'd use a DB9 null modem cable with a terminal emulator (e.g., PuTTY) set to 9600 bps to access CLI logs after a Grid member failure.