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NIOS-DDI-Expert Vce Exam - New NIOS-DDI-Expert Exam Questions

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Infoblox Qualified NIOS DDI Expert - INE Sample Questions (Q34-Q39):

NEW QUESTION # 34
You have DHCPv4 failover, and one of the peers lost power, triggering the COMMUNICATIONS- INTERRUPTED state. Power will be restored in 1 hour. In the meantime, there are several new devices coming online. What must you do to ensure DHCP service runs smoothly for everyone?

A. Nothing. All existing clients can renew with the remaining peer. The remaining peer can likely service a few new clients even with the reduced new client capacity
B. Contact Infoblox Support and be ready to place the remaining peer or member into PARTNER-DOWN
C. Immediately increase lease time on affected networks to 4 hours or more
D. Change DHCP relay or router configuration to only relay to the remaining peer or member

Answer: A

Explanation:
Comprehensive and Detailed In-Depth Explanation:DHCP Failover in NIOS ensures redundancy between two peers (primary and secondary). When one peer loses power, the state shifts toCOMMUNICATIONS- INTERRUPTED, meaning the remaining peer continues serving DHCP but with limited capacity for new leases. Let's analyze:
* Failover Mechanics:In NORMAL state, peers split the lease pool (e.g., 50/50 or custom split). In COMMUNICATIONS-INTERRUPTED, the surviving peer:
* Renews leases for existing clients (using its synced database).
* Assigns new leases from its portion of the pool, with reduced capacity (e.g., MCLT-Maximum Client Lead Time-limits new lease duration).
* Scenario:Power is out for 1 hour, and new devices are joining. The remaining peer can handle renewals and has some new lease capacity (depending on pool size and MCLT, typically 1 hour by default).
* Options:
* A:Contacting support and forcing PARTNER-DOWN gives the surviving peer full pool access, but it's unnecessary for a 1-hour outage with "a few" new clients. Overkill.
* B:Increasing lease time (e.g., to 4 hours) prevents lease expiration but doesn't address new client capacity and requires manual reversion. Unneeded complexity.
* C:Reconfiguring relays to point only to the surviving peer is redundant-it's already receiving requests-and risks misconfiguration. Incorrect.
* D:Doing nothing leverages the failover design: existing clients renew seamlessly, and the remaining peer services new clients within its capacity. Correct for this short-term, low-impact scenario.
* Practical Example:In an INE lab, you'd monitor the surviving peer's lease usage (via Grid Manager > DHCP > Leases) and confirm it handles the load, a key troubleshooting skill.References:Infoblox NIOS Administrator Guide - DHCP Failover; INE Course Content: NIOS DDI DHCP Troubleshooting.

NEW QUESTION # 35
An administrator is using the Management port with a Grid Master HA pair. The GUI can be accessed from the HA pair VIP.

A. True
B. False

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:Management port and HA pair in NIOS:
* Setup:The MGMT port (separate from LAN1) is for out-of-band access (e.g., SSH, GUI) to individual nodes, not the HA VIP.
* VIP Role:The Virtual IP (LAN1) serves DNS/DHCP and GUI access in-band, not via MGMT.
* Why False:MGMT port IPs (e.g., 192.168.2.101, 192.168.2.102) are node-specific-VIP (e.g.,
192.168.1.100) isn't routable via MGMT. GUI access uses LAN1 VIP or node IPs, not MGMT VIP.
* Practical Example:In an INE lab, access GUI via LAN1 VIP (not MGMT), test MGMT SSH, and troubleshoot port confusion.References:Infoblox NIOS Administrator Guide - Management Port; INE Course Content: NIOS DDI Grid Deployment.

NEW QUESTION # 36
How are Workflow Approval notifications delivered in NIOS?

A. Via SMS
B. Via email
C. Via in-app notifications
D. Via push notifications

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:Workflow Approval in NIOS enforces change control with notifications:
* Mechanism:When a requester submits a change (e.g., new DNS record), approvers are notified via email, configured in Grid Properties (Grid > Grid Manager > Grid Properties > Email).
* Details:SMTP server settings (e.g., IP, port, credentials) must be defined for delivery. No other methods are natively supported.
* Options:
* A:SMS isn't supported-requires external integration. Incorrect.
* B:Push notifications aren't part of NIOS GUI or mobile app (none exists). Incorrect.
* C:Email is the documented, sole method. Correct.
* D:In-app notifications don't exist-Grid Manager relies on email. Incorrect.
* Practical Example:In an INE lab, you'd configure an SMTP server, request a zone change, and troubleshoot email delivery failures for approval, testing Grid management.References:Infoblox NIOS Administrator Guide - Workflow Approval Notifications; INE Course Objective: NIOS DDI Grid Deployment.

NEW QUESTION # 37
In the DHCPv4 failover NORMAL state, leases are only stored on the primary peer.

A. True
B. False

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation: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.References:Infoblox NIOS Administrator Guide - DHCP Failover; INE Course Content: NIOS DDI DHCP Troubleshooting.

NEW QUESTION # 38
The only way to get access to all of the possible diagnostic CLI commands is to connect a serial cable to the serial port of the Infoblox appliance.

A. True
B. False

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:Infoblox NIOS provides a Command Line Interface (CLI) for diagnostics, accessible via multiple methods, not solely the serial port:
* Serial Console:Connecting a serial cable (9600 baud) to the appliance's serial port grants CLI access, useful for physical troubleshooting or when network access is down. It provides full diagnostic commands (e.g., "show process," "set debug").
* SSH:Remote access via SSH (default port 22) to the appliance's management IP offers the same CLI, assuming network connectivity and credentials are available. This is equally comprehensive.
* Key Point:Both methods provide access to all diagnostic commands (e.g., "show log," "reset database"), debunking the "only way" claim. The serial port is just one option, often used in failure scenarios (e.g., network outage), but SSH is more common day-to-day.
* INE Context:The course covers CLI troubleshooting, emphasizing both serial and SSH access for Grid diagnostics, making this a practical distinction.
* Why False:The statement's exclusivity is incorrect-multiple access methods exist.References:
Infoblox NIOS Administrator Guide - CLI Access; INE Course Content: NIOS DDI Grid Troubleshooting.

NEW QUESTION # 39
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