COH-285受験記、COH-285受験料

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Cohesity COH-285 認定試験の出題範囲：

トピック出題範囲
トピック 1
  • Monitor and Maintain NetBackup: This section of the exam measures skills of operations personnel and focuses on the monitoring and maintenance tasks necessary to keep a NetBackup environment healthy. The topics include the core concepts of image management and the use of the NetBackup Administration Console to verify images, expire them, import backup data, and perform manual duplication. The section explains how to manage both disk and cloud storage within NetBackup and highlights the use of reports for verification and monitoring. It also covers administrative controls for running, cancelling, suspending, resuming, and prioritizing backup or duplication jobs. Candidates learn how to initiate and monitor restore operations and understand the security management features such as role based access control and host ID certificates.
トピック 2
  • Configure NetBackup: This section of the exam measures the skills of system administrators and focuses on the configuration tasks required to set up and manage a NetBackup environment. It covers the setup of primary, media, and client settings along with essential host properties, including the use of security certificates. The section explains how to configure disk storage, cloud storage, and storage unit groups to support stable backup operations. It also includes the configuration of standard and advanced backup policies and protection plans. Candidates are expected to understand specialized backup solutions such as synthetic backups, True Image Restore, multiple data streams, checkpoint restart, and different duplication methods that involve storage lifecycle policies, disk staging, and replication features.
トピック 3
  • Tune NetBackup: This section of the exam measures skills of system engineers and focuses on analyzing performance related factors in a NetBackup environment. It introduces performance assessment and optimization practices to help candidates identify bottlenecks and improve overall efficiency. Tuning NetBackup includes making adjustments that lead to more stable and faster backup and recovery operations.
トピック 4
  • Troubleshoot NetBackup: This section of the exam measures skills of NetBackup administrators and focuses on resolving issues that occur during backup and recovery operations. It covers the interpretation of status codes and job details to diagnose failed jobs. The section also explains how to troubleshoot devices and media and how to validate connectivity between primary servers, media servers, and client systems. Candidates learn to address common problems in disaster recovery situations, including tasks related to recovering the NetBackup catalog.

>> COH-285受験記 <<

COH-285受験料 & COH-285難易度受験料

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Cohesity Certified Protection Professional - NetBackup Appliances 認定 COH-285 試験問題 (Q139-Q144):

質問 # 139
The primary server catalog is being recovered to a new server. The administrator receives the message displayed below:
"Please insert the following media and run the volume configuration wizard or the vmupdate command to update the NetBackup database.
Host - train1
MediaID - GBP847
Barcode - GBP847S1"
In the NetBackup Administration Console, barcode GBP847S1 is associated with media ID P847S1.
How should the administrator proceed?

正解：A

解説：
The correct procedure is to delete the incorrectly discovered tape entry, configure the Media ID generation rule correctly, re-inventory the library, and then run the recovery. The catalog recovery request requires MediaID GBP847 for barcode GBP847S1, but the new server inventoried the tape as P847S1. Cohesity NetBackup documentation explains that, by default, NetBackup generates a media ID from the last six characters of a tape barcode. For barcode GBP847S1, the last six characters are P847S1, which exactly matches the incorrect media ID shown in the Administration Console. Cohesity further states that media ID generation rules override this default and define which barcode characters NetBackup uses to create the media ID. In this case, the rule must generate the media ID from the first six characters, producing GBP847. The rule is configured from the robot inventory advanced options under Media ID Generation. A barcode rule is not sufficient because barcode rules assign media attributes such as media type or volume pool, whereas media ID generation controls the actual media ID. bplabel is also inappropriate because it can relabel media and risks invalidating existing backup data. References/topics: Catalog recovery, robot inventory, media ID generation rules, and tape barcode handling.


質問 # 140
What is the name of the feature that lets you recover the NetBackup catalog in case of a disaster?

正解：C


質問 # 141
An administrator is using Storage Lifecycle Policies (SLP) to perform the following operations:
* back up to a local Advanced Disk pool
* duplicate to a local MSDP pool
* replicate to an off-site MSDP pool
* duplicate to an off-site tape library, which needs to be retained for three years Which retention type should the administrator select for the SLP import operation?

正解：A


質問 # 142
A NetBackup primary server has many backups running each night to an MSDP pool that take a long time to complete. While these backups are running, replication jobs are queued.
Which action should the administrator perform to ensure replications can occur without waiting for the backups to complete?

正解：B

解説：
The correct action is to increase the Maximum I/O Streams for the MSDP disk pool. In NetBackup disk storage, the disk pool stream limit is the effective gate for concurrent read/write activity against that pool.
Cohesity documentation identifies Limit I/O streams as the disk-pool property that controls read and write streams, and notes that if the limit is reached, NetBackup queues jobs until a volume becomes available. The storage-unit Maximum concurrent jobs setting controls how many jobs NetBackup sends to a disk storage unit, but Cohesity also states that this setting is not the only concurrency limiter and depends on disk-pool and media-server factors. NetBackup performance guidance is more explicit for this scenario: the disk pool Max I
/O Streams value sets concurrent read/write operations, while the storage unit concurrent-jobs value addresses backup/restore jobs and does not control secondary operations such as duplications and replications; those are usually dictated by Max I/O Streams. Therefore, increasing storage-unit jobs or SLP priority does not guarantee that AIR replications can run while backups consume all available disk-pool streams. The correct tuning point is the disk pool's Maximum I/O Streams.


質問 # 143
An administrator has a MS-Windows type policy that has failed for a Microsoft Windows NetBackup client.
The policy uses the ALL_LOCAL_DRIVES backup selection. See the extract from the end of the job details below.
Which two logs will provide the most relevant information for troubleshooting and resolving the error?
(Select two.)

正解：D、E

解説：
The correct logs are the NetBackup bpfis logs on the client and the operating system logs on the client. The job details show a Windows snapshot failure: GLOBALROOT\Device\HarddiskVolumeShadowCopy..., status: 156: snapshot error encountered, and status: 1542: An existing snapshot is no longer valid. In Cohesity NetBackup snapshot processing, bpbrm starts bpfis on the client, and bpfis creates the snapshot of the client data and returns snapshot completion status. Therefore, the bpfis client log is the primary NetBackup log for the snapshot creation, mount, and delete phases.
Because this is a Microsoft Windows client snapshot issue, the Windows operating system logs are equally important. Cohesity's status 156 troubleshooting topic identifies VSS framework failures and notes that VSS- related application events may be written on the affected Windows system; it also references bpfis log content for snapshot failures. The media server bpbrm log can show orchestration status, but it usually reports what the client-side snapshot component returned. The bptm log is for media/data movement and is not the best source for VSS snapshot root cause.


質問 # 144
......

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