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Cohesity COH-285 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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.
Topic 2
  • 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.
Topic 3
  • 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.
Topic 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.

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Cohesity Certified Protection Professional - NetBackup Appliances Sample Questions (Q125-Q130):

NEW QUESTION # 125
A NetBackup policy containing five (5) servers, each with three (3) local drives, is launched in an environment with the NetBackup settings listed below:
Disk Pool Settings: Maximum I/O Streams = 20
Storage Unit Settings: Maximum concurrent jobs = 15
Policy Settings: Multiple Data Streams = Enabled
Backup Selection List = ALL_LOCAL_DRIVES
All other settings remain at their default values. Ten (10) client restores are launched immediately after the backup policy executes.
Excluding parent jobs, how many jobs will be concurrently active?

Answer: A

Explanation:
With ALL_LOCAL_DRIVES and Allow multiple data streams enabled, NetBackup can split each client backup into separate streams per drive or file system; Cohesity documentation states that NetBackup backs up the client and "splits the data from each drive" into its own stream when multiple data streams are enabled.
However, the number of streams that can run concurrently is still constrained by job limits. Cohesity's policy documentation states that concurrent stream count is affected by Maximum jobs per client, Limit jobs per policy, and related storage limits; when Maximum data streams is not explicitly set, NetBackup uses the lower of Maximum jobs per client or Limit jobs per policy. The default Maximum jobs per client is one job, so only one backup stream per client can run. With five clients, that means 5 active backup jobs, not 15.
The storage unit's Maximum concurrent jobs = 15 does not restrict restores, because Cohesity states this setting controls backup and duplication traffic, not restore jobs. The disk pool's Maximum I/O Streams = 20 limits read and write streams; restores read backup images and backups write them. Five backups plus ten restores equals 15 total streams, so all 10 restores can run.


NEW QUESTION # 126
A restore has failed with the following job details:
Error bptm ... error requesting media, TpErrno = Robot operation failed awaiting resource ... Pending Action: All drives down Which two resources should the administrator use to troubleshoot this issue? (Select two.)

Answer: B,D

Explanation:
The correct resources are the operating system logs and the robtest command. The failure is not a client file- read problem; it occurs when bptm requests tape media and the robot cannot complete the operation. Cohesity NetBackup documentation describes the tape workflow: bptm reserves drives and issues mount requests through the Media Manager and robotic daemons, which perform the physical media mount. When the job detail reports "Robot operation failed" and "All drives down," the fault domain is tape device access, robotic control, drive visibility, zoning, library state, or OS-level SCSI communication. Official troubleshooting guidance states that NetBackup uses OS-level commands and drivers for tape operations, and recommends starting at the OS and hardware layer and checking OS system/event logs. The robtest utility is also directly relevant because it issues basic SCSI commands to a robotic device attached to a NetBackup media server and can test drive status, slot status, move operations, and robot readiness. Options B, C, and D are less relevant:
bpbkar is a backup client read process, nbdevconfig is primarily disk-storage configuration, and bpmedia manages media records rather than robotic motion or drive connectivity.


NEW QUESTION # 127
An administrator observes intermittent connectivity issues between the appliance and clients.
Which NetBackup Appliance Shell Menu (CLISH) command can the administrator use to assist in diagnosing the problem?

Answer: D


NEW QUESTION # 128
An administrator is performing a backup and receives the following error message:
129 Message: Disk storage unit is full
Which NetBackup command should the administrator use to report the potential free space of AdvancedDisk storage units?

Answer: C


NEW QUESTION # 129
Backups are failing with status code 96 because tapes have NOT returned to the scratch volume pool after all the images on the tapes have expired.
What may be preventing the media from returning to the scratch pool?

Answer: A


NEW QUESTION # 130
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