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NEW QUESTION # 58
What does the CLI command "reset all" do?
Answer: C
Explanation:
Comprehensive and Detailed In-Depth Explanation:The NIOS CLI offers specific "reset" commands for appliance management, but "reset all" isn't one of them. Let's explore:
* Valid Commands:
* reset database: Clears the NIOS database (DNS, DHCP data) but keeps network settings and licenses.
* reset all licenses: Resets licensing, requiring re-registration.
* set factory: Performs a full factory reset, wiping everything (database, network, logs) to defaults.
* "reset all":This isn't documented or recognized in NIOS CLI. Typing it yields an error (e.g., "Invalid command").
* Options Analysis:
* A:Factory reset is set factory, not "reset all." Incorrect.
* B/C:No single "reset all" command combines these actions-specific resets are separate.
Incorrect.
* D:Matches the lack of this command in NIOS. Correct.
* Practical Example:In an INE lab, you'd use reset database to clear a test Grid member, but "reset all" would fail, teaching CLI precision in troubleshooting.References:Infoblox NIOS CLI Reference Guide; INE Course Content: NIOS DDI Grid Troubleshooting.
NEW QUESTION # 59
An administrator defined several Upgrade Groups before updating the software on a Grid. What members must be put in the same Upgrade Group?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation: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.
References:Infoblox NIOS Administrator Guide - Software Upgrades; INE Course Objective: NIOS DDI Grid Deployment.
NEW QUESTION # 60
What is the destination IP address of a DHCPDISCOVER packet from a client?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:DHCPDISCOVER is the initial broadcast a client sends to find a DHCP server:
* Packet Details:
* Source IP:0.0.0.0 (client has no IP yet).
* Destination IP:255.255.255.255 (limited broadcast, all devices on the local network).
* Sent via UDP (port 67 server, 68 client).
* Why 255.255.255.255:The client doesn't know the server's IP and broadcasts to all local devices.
Relays may forward it, but the initial packet targets the universal broadcast address.
* Options:
* A:0.0.0.0 is the source, not destination. Incorrect.
* B:224.0.0.52 is a multicast address, not used in DHCPDISCOVER. Incorrect.
* C:Matches DHCP broadcast standard (RFC 2131). Correct.
* D:Subnet-specific broadcast (e.g., 192.168.1.255) applies post-relay, not the initial packet.
Incorrect.
* Practical Example:In an INE lab, you'd capture a DHCPDISCOVER with Wireshark, confirm
255.255.255.255, and troubleshoot relay issues.References:RFC 2131 - DHCP; Infoblox NIOS Administrator Guide - DHCP Basics; INE Course Content: NIOS DDI DHCP Troubleshooting.
NEW QUESTION # 61
Which syslogs can be used to view boot-up messages from the last reboot of an Infoblox appliance? Choose 3 answers
Answer: A,B,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:Boot-up messages from an Infoblox appliance are logged in thesyslog, which records system events like reboots. These logs can be accessed in multiple ways:
* A (Remote Console):SSH or remote console access (e.g., via "show log syslog" CLI command) shows syslog entries, including boot messages.
* B (External Syslog Server):If configured, NIOS redirects syslog to an external server, preserving boot messages for review.
* C (Serial Console):Direct serial connection during boot captures real-time syslog output, including startup messages.
* D (NIOS GUI):The GUI provides a syslog viewer (Grid > Grid Manager > Logs), but it's not designed for real-time boot message capture and may not show full historical detail unless explicitly exported.
The INE course emphasizes troubleshooting via logs, including these methods.References:Infoblox NIOS Administrator Guide - Logging; INE Course Content: NIOS DDI Grid Troubleshooting.
NEW QUESTION # 62
Which of the following statements about restarting Grid services are true? (Select all that apply.)
Answer: B,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:Restarting services (e.g., DNS, DHCP) on NIOS Grid members is a common administrative task, often required after configuration changes. Let's break down each option with detailed reasoning:
* A:"Poll members to see which services will be restarted" suggests proactively querying members for restart eligibility. NIOS doesn't offer a specific polling feature for this-administrators check service status (e.g., via Grid Manager > Members > Services) or logs, but there's no pre-restart polling tool.
Incorrect.
* B:In Grid Manager (Grid > Grid Manager > Members), you can select a member and click "Restart Services" with a "Force Restart" option, overriding any checks for necessity. This is useful in troubleshooting (e.g., clearing a hung DNS service). Correct.
* C:NIOS allows scheduling service restarts via the "Schedule Restart" option in Grid Manager, letting you specify a time to minimize disruption (e.g., off-hours). This aligns with Grid management best practices taught in INE. Correct.
* D:There's no default daily restart policy in NIOS. Restarts occur only when triggered by an admin or system event (e.g., upgrade). This would disrupt service unnecessarily if true. Incorrect.
* Practical Example:During an INE lab, you might force a restart on a member to resolve a DHCP failover issue or schedule a restart after updating a DNS zone to ensure propagation, reflecting real- world Grid troubleshooting.References:Infoblox NIOS Administrator Guide - Managing Grid Services; INE Course Content: NIOS DDI Grid Troubleshooting.
NEW QUESTION # 63
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