Verified & Latest NS0-093 Dump Q&As with Correct Answers
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Network Appliance NS0-093 certification exam is designed for individuals who want to demonstrate their skills and knowledge in supporting NetApp hardware products. NS0-093 exam is part of the NetApp Accredited Hardware Support Engineer certification program, which is intended for technical support engineers, field repair technicians, and other IT professionals who work with NetApp hardware.
NEW QUESTION # 22
When you add a new disk to an ONTAP 9.1 system, you see an error that the disk "has raid label with version (16), which is not within the currently supported range (14-15)." What is one possible cause of this error?
- A. The disk needs to be assigned to the new system.
- B. The disk is a non-zeroed spare.
- C. The disk firmware is too new for ONTAP software.
- D. The disk was in a system with a newer version of ONTAP software
Answer: D
Explanation:
Explanation of RAID Label Versions:
* Disks in ONTAP systems contain metadata known as RAID labels. These labels store critical information such as ownership, aggregate membership, and versioning.
* The error indicates a mismatch between the RAID label version on the disk and the supported versions of the ONTAP system.
Why Option D Is Correct:
* If a disk has a RAID label created by a newer version of ONTAP (e.g., version 16) and is then inserted into a system running an older version of ONTAP (e.g., supporting versions 14-15), the label will not be recognized.
* This mismatch causes ONTAP to reject the disk.
Resolution:
* Upgrade the ONTAP version to match the RAID label on the disk.
* Alternatively, zero the disk to reset its RAID label, but this will erase all data on the disk.
NetApp Reference Documentation:
* The "ONTAP Disk Management Guide" and "ONTAP Compatibility Matrix" explain RAID label versions and compatibility issues when moving disks between ONTAP systems.
NEW QUESTION # 23
How do you set environment variables to factory settings?
- A. unsetenv all
- B. setenv factory
- C. set-defaults
- D. wipeconfig
Answer: C
Explanation:
To reset environment variables to factory settings, the set-defaults command is used. This command clears all customizations and restores the environment variables to their default values.
* Command Syntax:At the LOADER prompt, type:
Key Details:arduino
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set-defaults
* Effect:This command resets all environment variables (e.g., boot arguments, diagnostic settings) to their original factory defaults.
* B. unsetenv all:
* This command clears all environment variables, but it does not restore them to factory defaults.
* C. setenv factory:
* This is not a valid command in NetApp systems.
* D. wipeconfig:
* This command is used to clear configuration and logs but does not reset environment variables.
Why Other Options Are Incorrect:
* NetApp "System Configuration Guide" confirms the use of set-defaults for restoring environment variables to factory settings.
References:
NEW QUESTION # 24
You have replaced a failed boot device. You perform boot_recovery and receive no errors. However, when the node reboots, it reports that it has no disks.
What are two possible causes? (Choose two.)
- A. The disks that are owned by this node have been marked as failed.
- B. The SAS cables were incorrectly reconnected after reinstalling the motherboard.
- C. The interconnect is down.
- D. The node is booting a lower version of ONTAP software than was last used.
Answer: B,D
Explanation:
Possible Causes for "No Disks" Error:
* A (Incorrect SAS Cabling): If the SAS cables are incorrectly reconnected or swapped after replacing the boot device, the disks may not be detected because the physical connection to the shelves is compromised. Verifying and reseating the SAS cables is essential.
* C (Lower ONTAP Version): If the node boots into an ONTAP version that is lower than the version previously used, it might not recognize the RAID labels or disk metadata created by the higher ONTAP version.
Why Other Options Are Incorrect:
* B (Disks Marked as Failed): Disks that are marked as failed would still be visible in the system, though unusable.
* D (Interconnect Down): An interconnect failure affects HA functionality but does not prevent a node from detecting its own disks.
NetApp Reference Documentation:
* Refer to the "ONTAP Boot Recovery Guide" and "SAS Cabling Guide" for steps to resolve disk detection issu
NEW QUESTION # 25
In maintenance mode, which of the following commands shows disk ownership?
- A. storage show disk -p
- B. sysconfig -v
- C. disk show -v
- D. aggr status
Answer: C
Explanation:
In maintenance mode, the command disk show -v provides detailed information about disk ownership. This includes the current owner, previous owner, and disk health status.
* Enter maintenance mode, and run:
How to Use:disk show -v
* The output will display ownership information for each disk, including its RAID group and current assignment.
* A. sysconfig -v:
* This command provides system configuration details but does not show disk ownership.
* C. aggr status:
* This command shows the status of aggregates, not individual disks or their ownership.
* D. storage show disk -p:
* This command is not valid in maintenance mode.
Why Other Options Are Incorrect:
* NetApp "Maintenance Mode Commands Guide" highlights disk show -v as the command to check disk ownership.
References:
NEW QUESTION # 26
You have created a case with NetApp Support for an issue with a DS4246 shelf on an ONTAP 9.12.1 system.
They have requested that you provide shelf logs.
What action do you need to take to collect the shelf logs?
- A. Invoke an autosupport of type all using Active IQ Unified Manager.
- B. Provide the output of the nodeshell command rdfile/etc/log/shelflog.
- C. Invoke a diagnostic autosupport with the subsystem log_files.
- D. Invoke a diagnostic AutoSupport with the subsystem storage.
Answer: D
Explanation:
To collect shelf logs for a DS4246 shelf in an ONTAP 9.12.1 system, you must invoke a diagnostic AutoSupport specifically targeting the storage subsystem. This action ensures that detailed storage logs, including shelf logs, are included in the AutoSupport bundle.
* Use the following command:
Steps to Collect Shelf Logs:bash
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system node autosupport invoke -node <node_name> -type diagnostic -subsystem storage Replace <node_name> with the name of the node experiencing the issue.
* This command generates an AutoSupport message that includes logs related to storage subsystems, such as disk shelves and adapters.
* Provide the AutoSupport case number to NetApp Support for further analysis.
* A. Provide the output of the nodeshell command rdfile /etc/log/shelflog:
* While this command allows manual reading of shelf logs, it is not a recommended or comprehensive approach for collecting logs for NetApp Support cases.
* B. Invoke an AutoSupport of type all using Active IQ Unified Manager:
* This action generates a generic AutoSupport bundle, which may not include detailed shelf logs unless explicitly targeted.
* D. Invoke a diagnostic AutoSupport with the subsystem log_files:
* The log_files subsystem targets general system logs, not storage-specific logs like shelf logs.
Why Other Options Are Incorrect:
* "ONTAP 9 AutoSupport and Diagnostics Guide" outlines the use of the subsystem storage option for collecting shelf logs.
* The "Troubleshooting Storage Subsystems" documentation specifies diagnostic AutoSupport as the method for gathering shelf-related logs.
References:
NEW QUESTION # 27
You have identified that the file named quarterly_25.docx is inconsistent.
Which nodeshell command reports whether there are Snapshot copies available?
- A. "priv set diag; file check -v <voiname> -i <field>"
- B. "priv set advanced; aggr wafliron start -f quarterly_25.docx"
- C. "priv set advanced; file check -f quarterly_25.docx"
- D. "priv set diag; snap list -f quarterly_25.docx"
Answer: A
NEW QUESTION # 28
Where is a kernel core file stored on a FAS9000 system that is running ONTAP 9.12.1 software?
- A. on the root aggregate
- B. on the partner root aggregate
- C. on the boot device
- D. on the mailbox disk
Answer: A
Explanation:
On a FAS9000 system running ONTAP 9.12.1, the kernel core file is stored on the root aggregate. This is the default location where ONTAP writes kernel core files for system-level failures.
* The root aggregate is the aggregate that contains the root volume for a given node in the cluster. This aggregate is used for critical system files and logs, including kernel core files.
* When a kernel panic or other critical failure occurs, the core dump is written to the root aggregate for later analysis by NetApp Support.
Key Details:
* A. on the partner root aggregate: The partner root aggregate is not used for storing core files unless explicitly configured (which is not the default behavior).
* C. on the mailbox disk: The mailbox disk is used for cluster quorum and configuration information, not for storing core files.
* D. on the boot device: The boot device contains ONTAP software and boot files but does not store kernel core dumps.
* "ONTAP System Administration Guide" specifies that core files are stored on the root aggregate.
* NetApp's "Troubleshooting and Diagnostics Guide" confirms the default behavior for kernel core file storage.
Why Other Options Are Incorrect:References:
NEW QUESTION # 29
Which two of the following methods are valid ways to access a node which is not booting? (Choose two.)
- A. cluster management port
- B. serial console
- C. Service Processor
- D. node management port
Answer: B,C
Explanation:
If a node is not booting, the following methods can be used to access the system for troubleshooting:
* What it does:The SP provides out-of-band management access to the node, even if the node is not booting.
* How to use:
* Connect to the SP using SSH or a direct console connection.
* Use SP commands to gather logs or perform diagnostics.
1. Service Processor (SP)
* What it does:The serial console provides direct access to the node's bootloader or maintenance mode.
* How to use:
* Connect to the serial port using a terminal emulator.
* Use console commands to interact with the system.
2. Serial Console
* A. node management port:
* The node management interface is only accessible if the node is booted and ONTAP is running.
* B. cluster management port:
* The cluster management interface requires the cluster to be operational, which is not possible if the node is not booting.
Why Other Options Are Incorrect:
* NetApp "Service Processor and Serial Console Guide" provides instructions for accessing a non- booting node.
References:
NEW QUESTION # 30
Which type of core file is generated when a node panics?
- A. kernel core
- B. sync core
- C. mgwd core
- D. user space core
Answer: A
Explanation:
When a node panics in ONTAP, a kernel core file is generated. This core file contains information about the kernel's state at the time of the panic and is essential for debugging system crashes.
* A kernel core file is produced during a node panic to capture information about the kernel, memory, and processes that led to the crash.
* The core file is stored on the root aggregate by default and can be uploaded to NetApp Support using the autosupport invoke-core-upload command.
Key Details:
* A. mgwd core:
* This is related to the Management Gateway daemon, which handles management traffic. It does not generate a core file during a panic.
* B. user space core:
* User space cores are generated for processes running in user space, not for kernel panics.
* C. sync core:
* Sync cores refer to synchronized cores for debugging but are not the primary type generated during a node panic.
Why Other Options Are Incorrect:
* "ONTAP Panic Troubleshooting Guide" specifies kernel core files as the output of a node panic.
* "ONTAP Core File Management Guide" details the handling of kernel core files after a crash.
References:
NEW QUESTION # 31
Which of the following scenarios could result in a NetApp WAFL inconsistency in a RAID DP aggregate?
- A. two disks failing and a block error during reconstruction
- B. both party disks failing
- C. two disks failing within seconds of each other
- D. rebooting a node during a disk reconstruction
Answer: A
Explanation:
A NetApp WAFL (Write Anywhere File Layout) inconsistency in a RAID-DP aggregate could occur in the following scenarios:
* Why this causes inconsistency:
* RAID-DP is designed to handle up to two concurrent disk failures. However, if a block error occurs during the reconstruction process (e.g., unreadable data on the surviving disks), the RAID group cannot rebuild the lost data, leading to WAFL inconsistencies.
1. Two disks failing and a block error during reconstruction
* Why this causes inconsistency:
* If two disks in the same RAID group fail nearly simultaneously (before the RAID-DP can reconstruct data from the first failed disk), the system cannot recover the data, resulting in WAFL inconsistencies.
2. Two disks failing within seconds of each other
* B. rebooting a node during a disk reconstruction:
* Rebooting a node does not cause WAFL inconsistency because ONTAP ensures that RAID reconstructions resume upon reboot without data loss.
* D. both party disks failing:
* This is not a valid RAID-DP term.
Why Other Options Are Incorrect:
* "WAFL and RAID-DP Operations Guide" explains failure scenarios that could cause inconsistencies.
* NetApp's "Troubleshooting RAID Groups and Aggregates" covers recovery procedures for double-disk failures and reconstruction errors.
References:
NEW QUESTION # 32
You are replacing a boot device on a FAS8300 system that is running ONTAP 9.10P6 software. You attach a USB memory stick to the external USB port on the storage controller but cannot access the memory stick.
What step needs to be performed to access the boot device?
- A. Add the boot device before the BIOS is loaded.
- B. The external USB port is not activated on NetApp systems.
- C. Set the port to "enabled" with setenv.
- D. You need to use ONTAP 9.11 or later software.
Answer: C
Explanation:
When replacing a boot device on a FAS8300 system and using a USB memory stick for recovery or installation, the external USB port must be explicitly enabled. This is done through the setenv command in the boot environment.
* Reboot the system and interrupt the boot process to access the bootloader prompt.
* At the bootloader prompt, use the following command:
Steps to Enable the External USB Port:arduino
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setenv usbport_enabled true
* Save the configuration and proceed with the boot process.
* B. You need to use ONTAP 9.11 or later software:
* ONTAP 9.10P6 fully supports external USB recovery. There is no need to upgrade to ONTAP
9.11 for this functionality.
* C. Add the boot device before the BIOS is loaded:
* While the USB device must be inserted during the boot process, this alone will not enable access unless the port is enabled via setenv.
* D. The external USB port is not activated on NetApp systems:
* This is incorrect. The external USB port is supported but must be explicitly enabled in the bootloader environment.
Why Other Options Are Incorrect:
* NetApp Hardware Installation Guide for FAS8300 systems outlines the steps for enabling the USB port during recovery.
* "ONTAP Boot Troubleshooting Guide" specifies the use of the setenv command to activate USB ports.
References:
NEW QUESTION # 33
A node has failed.
Which two conditions must be met for an automatic takeover to be triggered? (Choose two.)
- A. The cluster network must be available.
- B. NVRAM must be synchronized.
- C. Mailbox disks must be reachable.
- D. The combined utilization of both nodes must be less than 100%.
Answer: B,C
Explanation:
For an automatic takeover to occur in an HA pair, the following conditions must be met:
* The HA pair uses mailbox disks to coordinate and ensure that both nodes have consistent cluster state information.
* If the mailbox disks are not reachable, the takeover process cannot proceed.
1. Mailbox Disks Must Be Reachable:
* The nodes in an HA pair continuously mirror NVRAM data to ensure that writes are protected.
* If NVRAM is not synchronized, the takeover cannot safely handle active workloads.
2. NVRAM Must Be Synchronized:
* A. The combined utilization of both nodes must be less than 100%:
* This is not a requirement for automatic takeover. ONTAP can handle higher utilization during failover scenarios.
* B. The cluster network must be available:
* While the cluster network is critical for normal operation, takeover can still occur if the cluster network is unavailable, as long as the HA interconnect is operational.
Why Other Options Are Incorrect:
* NetApp "ONTAP High Availability Guide" outlines the requirements for automatic takeover in HA pairs.
* "ONTAP NVRAM Synchronization and Failover Guide" explains NVRAM mirroring requirements.
References:
NEW QUESTION # 34
Your customer notices that their AFF A220 high-availability (HA) system is showing Single-Path HA.
How do you make the system into multipath HA?
- A. 0a and 0d on both controllers should be connected
- B. 0a and 0b on both controllers should be connected.
- C. 0c and 0d on both controllers should be connected.
- D. 0a and 0c on both controllers should be connected.
Answer: D
Explanation:
In a NetApp high-availability (HA) configuration, multipath HA ensures redundancy by providing two independent paths from each controller to the connected storage. If the system is currently showing Single- Path HA, it means only one path is operational or connected, which is a potential single point of failure.
To convert the configuration to multipath HA, additional cabling must be configured to establish the second path. For the AFF A220 system, the correct connections are as follows:
Explanation of the Correct answer:
* AFF A220 Port Configuration for HA:
* Each controller in an AFF A220 has ports labeled 0a, 0b, 0c, and 0d for connectivity.
* In a multipath HA configuration, each controller must have two independent paths to the connected storage via the partner controller's disk shelves.
* Correct Cabling for Multipath HA:
* Port 0a on both controllers must be connected to the corresponding port (e.g., disk shelf stack or Inter-Switch Link).
* Port 0c on both controllers must also be connected to complete the redundant path.
* These connections ensure that there are two independent data paths between the controllers and the storage system, providing fault tolerance in case one path fails.
* Single-Path HA to Multipath HA:
* If the system currently shows Single-Path HA, it is likely that only one set of ports (e.g., 0a and
0b) are cabled.
* Adding the additional connections on 0a and 0c establishes the second path required for multipath HA.
Why the Other Options Are Incorrect:
* A. 0a and 0b on both controllers should be connected:
* This option only connects ports 0a and 0b, which does not establish a multipath HA configuration. Port 0c is also required for redundancy.
* C. 0c and 0d on both controllers should be connected:
* Connecting only 0c and 0d would leave ports 0a disconnected, failing to establish a proper multipath HA setup. Both 0a and 0c are required.
* D. 0a and 0d on both controllers should be connected:
* Connecting 0a and 0d is not the standard configuration for multipath HA in an AFF A220 system. Port 0c is part of the required configuration.
How to Verify the Configuration:
* Use the following ONTAP command to verify the HA status:
cluster::> storage failover show -fields multipath-ha
* This will display whether the system is in multipath HA or single-path HA mode.
* Check the port connectivity:
cluster::> network port show -node <node_name>
References:
* NetApp Hardware Installation and Setup Guide for AFF A220.
* NetApp Knowledge Base: "Configuring Multipath HA for AFF Systems."
* ONTAP 9.x System Administration Guide: "High Availability Configurations." Understanding Single-Path HA vs. Multipath HA:
* Single-Path HA indicates that only one path exists between the controllers and the connected shelves, leading to limited redundancy.
* Multipath HA requires both controllers to have redundant SAS connections to the shelves.
Cabling for Multipath HA in AFF A220 Systems:
* To achieve multipath HA, you must connect 0c and 0d on both controllers to the appropriate stack ports on the shelves.
* This ensures dual paths for each controller to access the storage shelves.
NetApp Reference Documentation:
* Refer to the "ONTAP Multipath HA Configuration Guide" and the "NetApp Hardware Installation Guide" for AFF A220 systems for cabling diagrams and best practices.
NEW QUESTION # 35
Which two steps are required to replace a drawer in a DS460c shelf? (Choose two.)
- A. Power off the shelf.
- B. Shut down both nodes.
- C. Evacuate all drives in the drawer.
- D. Disconnect the cable chains from the chassis.
Answer: C,D
NEW QUESTION # 36
Which two NetApp tools should be used when troubleshooting the root cause of an unexpected controller reboot? (Choose two.)
- A. ONTAP Mediator
- B. ONTAP CLI
- C. Active IQ Unified Manager
- D. Active IQ Config Advisor
- E. Active IQ Digital Advisor
Answer: B,C
Explanation:
To troubleshoot the root cause of an unexpected controller reboot, the following tools are commonly used:
* What it does:Provides monitoring and performance data for the ONTAP cluster, including historical event logs that may help identify the root cause of a reboot.
1. Active IQ Unified Manager
* What it does:The CLI allows you to gather logs and status information directly from the affected node.
Commands like event log show and system core are essential for identifying the reason behind the reboot.
2. ONTAP CLI
* B. Active IQ Digital Advisor:
* This tool focuses on predictive analytics and proactive recommendations, not troubleshooting unexpected reboots.
* D. ONTAP Mediator:
* This tool is used for managing MetroCluster configurations, not for troubleshooting reboots.
* E. Active IQ Config Advisor:
* This tool checks for configuration best practices but does not provide detailed logs or reboot diagnostics.
Why Other Options Are Incorrect:
* NetApp "ONTAP System Management Guide" emphasizes the use of Unified Manager and CLI for troubleshooting system issues.
References:
NEW QUESTION # 37
During which two operations is the NVRAM replayed by the high-availability (HA) partner? (Choose two.)
- A. when a node is halted
- B. during a negotiated takeover
- C. after triggering a sync core
- D. when the node loses power
Answer: B,D
Explanation:
* Description:
* When a negotiated takeover occurs (e.g., for maintenance or upgrades), NVRAM data is replayed by the HA partner to ensure no data is lost.
* Relevance:
* This ensures that all pending writes are safely processed by the partner node.
1. During a Negotiated Takeover:
* Description:
* If a node loses power unexpectedly, the HA partner replays the mirrored NVRAM data to protect active write operations.
2. When the Node Loses Power:
* A. after triggering a sync core:
* Triggering a sync core does not involve NVRAM replay; it captures the system state for debugging.
* B. when a node is halted:
* Halting a node does not trigger NVRAM replay unless it is part of a negotiated takeover.
Why Other Options Are Incorrect:
* "ONTAP High Availability Guide" explains NVRAM mirroring and replay during failover scenarios.
References:
NEW QUESTION # 38
Which two statements are true about an IOM 12 module? (Choose two.)
- A. It has four SAS ports.
- B. It has two SAS ports.
- C. It has an Ethernet port for alternate control path (ACP).
- D. It does not have an Ethernet port for alternate control path (ACP).
Answer: A,C
Explanation:
Overview of IOM 12 Module:
* The IOM 12 module is used in NetApp storage shelves for SAS connectivity.
Key Features of IOM 12:
* SAS Ports: The IOM 12 module has four SAS ports (two IN and two OUT) to support daisy-chaining of shelves and provide redundancy.
* ACP (Alternate Control Path): The IOM 12 includes an Ethernet port for ACP, which is used for out- of-band management and monitoring of the storage shelves.
Elimination of Other Options:
* Option A is incorrect because the module has four SAS ports, not two.
* Option C is incorrect because the module does include an Ethernet port for ACP.
NetApp Reference Documentation:
* "NetApp Hardware Universe" lists the specifications of the IOM 12 module, including its SAS and ACP capabilities.
* The "ONTAP Shelf Installation Guide" discusses ACP and its role in shelf management.
NEW QUESTION # 39
On a NetApp FAS9000 system, which two field replaceable units (FRUs) are supported for replacement without takeover? (Choose two.)
- A. caching module
- B. I/O module
- C. NVRAM module
- D. DCPM module
Answer: B,C
Explanation:
FRUs on FAS9000 Supporting Replacement Without Takeover:
* A (I/O Module): I/O modules can be replaced hot (without takeover) to maintain system uptime during hardware servicing.
* D (NVRAM Module): NVRAM modules on FAS9000 can also be replaced without a node takeover, ensuring data integrity during replacement.
Why Other Options Are Incorrect:
* B (DCPM Module): The DCPM (Data Center Power Management) module is not hot-swappable and requires a node takeover.
* C (Caching Module): The caching module is integrated and typically requires a node takeover or power-down for replacement.
NetApp Reference Documentation:
* Refer to the "NetApp FAS9000 Hardware Service Guide" for supported FRU replacement procedures and operational constraints.
NEW QUESTION # 40
An aggregate has experienced a multiple disk failure due to a failing I/O module (IOM). The module has been replaced and the aggregate is still failed.
What step can be taken to recover the aggregate?
- A. Use diskcopy from maintenance mode.
- B. Run wafliron from the boot_menu.
- C. Unfail the drives from maintenance mode.
- D. Unfail the drives in the order that they failed from the clustershell
Answer: C
Explanation:
When an aggregate fails due to multiple disk failures caused by a faulty I/O module (IOM), the first step after replacing the faulty IOM is to manually unfail the affected drives. This process is done in maintenance mode.
* Enter Maintenance Mode:
* Reboot the node and interrupt the boot process to access maintenance mode.
* Identify Failed Drives:
* Use the command:
Steps to Recover the Aggregate:sql
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storage show disk -broken
This command lists all failed (broken) drives.
* Unfail the Drives:
* Use the following command for each failed drive:
php
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disk unfail <disk-name>
* Reconstruct the Aggregate:
* Once all drives are unfail, the system should begin reconstructing the RAID groups in the aggregate.
* A. Use diskcopy from maintenance mode:
* Diskcopy is used for cloning or copying data between disks, not for recovering failed aggregates.
* B. Run wafliron from the boot_menu:
* wafliron is used to repair WAFL inconsistencies, but it does not help recover failed aggregates due to disk issues.
* D. Unfail the drives in the order that they failed from the clustershell:
* Drives must be unfail in maintenance mode, not from the clustershell.
Why Other Options Are Incorrect:
* NetApp's "Aggregate and RAID Troubleshooting Guide" explains the process of recovering aggregates and using maintenance mode commands.
* "ONTAP Disk Recovery Guide" outlines steps to unfail disks and recover RAID groups.
References:
NEW QUESTION # 41
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